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1521 results about "Grassland" patented technology
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Grasslands are areas where the vegetation is dominated by grasses (Poaceae); however, sedge (Cyperaceae) and rush (Juncaceae) families can also be found along with variable proportions of legumes, like clover, and other herbs. Grasslands occur naturally on all continents except Antarctica. Grasslands are found in most ecoregions of the Earth. For example, there are five terrestrial ecoregion classifications (subdivisions) of the temperate grasslands, savannas, and shrublands biome (ecosystem), which is one of eight terrestrial ecozones.
HERBICIDAL COMPOSITIONS COMPRISING 4-AMINO-3-CHLORO-5-FLUORO-6-(4-CHLORO-2-FLUORO-3-METHOXYPHENYL) PYRIDINE-2-CARBOXYLIC ACID OR A DERIVATIVE THEREOF AND ACETYL-CoA CARBOXYLASE (ACCASE) INHIBITORS
Provided herein are synergistic herbicidal compositions containing and methods utilizing (a) a compound of formula (I):or an agriculturally acceptable salt or ester thereof and (b) an ACCase inhibitors, including. e.g., clethodim, clodinafop-propargyl, cyhalofop-R-butyl, diclofop-methyl, fenoxaprop-P-ethyl, fluazifop-P-butyl, haloxyfop-R-methyl, metamifop, pinoxaden, profoxydim, quizalofop-P-ethyl, sethoxydim and tralkoxydim, provide synergistic weed control of undesirable vegetation in rice, cereals, wheat, barley, oats, rye, sorghum, corn / maize, sugarcane, sunflower, oilseed rape, canola, sugar beet, soybean, cotton, pineapple, pastures, grasslands, rangelands, fallowland, turf, tree and vine orchards, aquatics, plantation crops, vegetables, industrial vegetation management (IVM) or rights of way (ROW).
Owner:CORTEVA AGRISCIENCE LLC
Stationary satellite-based fire remote sensing and monitoring method
InactiveCN106503480AImprove mobilityQuickly monitor dynamic changesForest fire alarmsSpecial data processing applicationsSatellite dataBrightness temperature
The invention discloses a stationary satellite-based fire remote sensing and monitoring method which solves the problem of automatic extraction of fire points in a forest and grassland, monitoring of a fire spreading situation and estimation of fire loss based on a stationary satellite. The method comprises the following steps: acquiring stationary satellite data, and calculating brightness temperature of image elements; judging latent fire point image elements from non-cloud and non-flare image elements in land image elements by using a method of a brightness temperature threshold value, and performing statistical judgment on the fire point image elements according to wave band information of background window image elements; culling out all-year-round high-temperature fire points based on a fixed fire point library and land utilization type data, and extracting positions and brightness temperatures of forest fire and grassland fire; providing a fire spreading situation sequence according to forest fire and grassland fire remote sensing and monitoring results of observation frequencies of the stationary satellite; estimating the loss caused by the forest fire or the grassland fire. The method disclosed by the invention quickly monitors a dynamic change of a disaster target, so that the efficiency for prewarning and emergently handling major disasters in China is further improved.
Owner:INST OF REMOTE SENSING & DIGITAL EARTH CHINESE ACADEMY OF SCI
Grassland satellite remote sensing monitoring system and method
ActiveCN102033230ARapid Remote Sensing MonitoringEfficient Remote Sensing MonitoringElectromagnetic wave reradiationSpecial data processing applicationsVegetation IndexMonitoring system
The invention discloses a grassland satellite remote sensing monitoring system and a grassland satellite remote sensing monitoring method. The system comprises a grassland growth potential monitoring module, a grassland grass yield monitoring module and a grass-livestock balance monitoring module, wherein the grassland growth potential monitoring module is used for acquiring a grassland normalized difference vegetation index (NDVI) and a grassland growth index (GI) by processing data of a satellite remote sensing moderate resolution imaging spectrometer (MODIS) in different periods according to the relation between remote sensing information and the condition of grassland vegetation on the ground to reflect the growth potential of the grassland vegetation; the grassland grass yield monitoring module is used for establishing a grass yield estimating model by combining yield measuring data of ground quadrats according to the information of the satellite remote sensing MODIS and inverting the grass yield of grasslands according to the data of the remote sensing MODIS; and the grass-livestock balance monitoring module is used for estimating the grass-livestock balance condition by combining the current grass yield, foraged grass yield and replenished forage grass of natural grasslands according to the grass yield acquired by the grassland grass yield monitoring module.
Owner:INST OF AGRI RESOURCES & REGIONAL PLANNING CHINESE ACADEMY OF AGRI SCI
Buffer type soil gas sampling device
InactiveCN102252876APrevent air leakageGuaranteed reliabilityWithdrawing sample devicesGrasslandEngineering
The invention discloses a buffer type soil gas sampling device, belonging to the technical field of soil experimental facilities. The device consists of an injector, a valve, a gas-exhausting hole, a gas-exhausting conduit, a box body, gasbags, a water seal tank and a base. As the gasbags are additionally arranged on the box body, gas pressure inside / outside the box body during a whole storing and sampling process is always maintained in a balance state after the buffer adjustment of the gasbags, the box body is prevented from outward or inward gas leakage, and the quality of gas stored in the box body is maintained; meanwhile, the difficulty that natural release of soil gas is subjected to inhibition is also overcome, the reliability of measured data for gas released by soil is enhanced.The device has the advantages of reasonable design, simplicity for operating and low cost, and can be widely applied to gathering work for greenhouse gas emission in farmland, nudation, grassland andthe like.
Owner:ZHEJIANG ACADEMY OF AGRICULTURE SCIENCES
Ecological method of breeding chicken by planting grass under trees
The invention belongs to the technical field of livestock breeding and specifically relates to an ecological method of breeding chicken by planting grass under trees. The method includes that a fine forage grass breed which is shade-tolerant, trampling-resistant, strong in stress resistance and applicable to being planted in the forest is selected, and a forest land for grazing the chicken is modified to form a grassland under the trees for grazing the chicken; a contour grass and shrub zone in a stocking land is used for planting the grass, a chicken house is built in the middle of the grassland under the trees for grazing the chicken, zone division is performed for rotation grazing, and zones are separated by biological fences; and Chinese herbal plants are sowed in rotation grazing zones so that the grazed chicken can freely ingest the plants. A scientific evidence is provided for obvious economic benefits and ecological benefits which are achieved by means of rapid development of domestic fowls and effective ecological rehabilitation, wherein the domestic fowls of Hetian chicken and the like are applicable to stocking in forestland. By means of the model for breeding the chicken, high economic benefits are created, parts of the economic benefits are used for investing development of ecological chicken breeding model, and the created economic benefits and the development of ecological chicken breeding model are combined for creating better benefits, and accordingly, a virtuous cycle is achieved, ecological balance is kept, and the sustainable development is effectively achieved.
Owner:INST OF ANIMAL HUSBANDRY & VETERINARY FUJIAN ACADEMY OF AGRI SCI
Grassland dry matter mass remote sensing estimating method
ActiveCN102393238APromote healthy and sustainable developmentMaintain ecological balanceWeighing apparatusData acquisitionRemote sensing application
The invention discloses a grassland dry matter mass remote sensing estimating method, which belongs to the field of remote sensing application. The method comprises the following steps of: collecting and processing field test data; downloading and processing Modis (Moderate Resolution Imaging Spectroradiometer) satellite data; analyzing and modeling the data and detecting the accuracy and the like. The method for establishing a ground spectrum model for predicating ground dry matter mass and correcting a Modis spectrum model through ground hyperspectral experiments is different from the method for directly predicating biomass liveweight by using NDVI (Normalized Difference Vegetation Index) data of the Modis remote sensing satellite in other like researches so that the grassland dry matter mass remote sensing estimating method is helpful for improving the predicating accuracy, is beneficial for scientific management and reasonable utilization of the grassland resources and has important practical significance in correct evaluation of the real productivity of the grassland and the sustainable use of the grass resources.
Owner:高吉喜
High-efficiency organic circulating agricultural production system
InactiveCN101233836AReasonable useImprove utilizationAnthropod material medical ingredientsFood processingFecesAgricultural science
The invention discloses an organic recycling agriculture production system with high efficiency, which uses food obtained from planted crops for feeding livestock, manure produced by which is fermented so as to produce biogas, biogas residue and biogas slurry, wherein, the biogas can be used as clean energy, while the biogas residue and biogas slurry are applied to cultivated lands or grass lands; the planted forage and crop stalks can be used for raising cattle or earthworm after grinded together with cattle manure; the earthworm can be extracted to produce plant growth enhancer, protein feed and biologic products; the earthworm manure can be used as highly effective organic fertilizer to be applied to farm lands or grasslands. The organic recycling agriculture production system of the invention abides by the theory of agriculture circular economy, utilizes nature resource fully and reasonably, promotes resource regeneration, forms virtuous circle of multi-grade utilization of material and energy, and thus is a modern agriculture technique with high quality, high yielding, high efficiency, low consumption and environment protection as well.
Owner:GUIZHOU JILONG ECOLOGICAL TECH
Eco-friendly sand stabilization dust depressor and preparation method thereof
InactiveCN102863965AReduce wasteCause harmClimate change adaptationOrganic fertilisersPolyvinyl alcoholPlanting seed
An eco-friendly sand stabilization dust depressor is dark-brown milky liquid prepared by biomass materials, surfactants, water-soluble polymers, moisturizers, preservatives and water through mixing. The viscosity of the dust depressor is 50-80 centipoise at the normal temperature. The biomass materials are solid cake-like residues of plant seeds after a squeezing and oil pressing process or solvent digestion; the water-soluble polymers are carboxymethylcellulose and polyvinyl alcohol; and the moisturizers are magnesium chloride, calcium chloride, sodium sulfate, sodium silicate and the like. The obtained sand stabilization dust depressor is eco-friendly; and the preparation process is simple, short in process and easy to operate. The eco-friendly sand stabilization dust depressor has the advantages of being environment-friendly, non-toxic and free of pollution; and capable of effectively controlling soil wind erosion and land desertification, reducing dust weather, playing roles in sand stabilization, dust proofing and depression, and being widely used in severe wind erosive areas such as suburban farmlands, wastelands, degraded grasslands and deserts.
Owner:NANKAI UNIV
Greenhouse gas collection device for soil at different depths, and in-situ observation method
InactiveCN102879231ASimple structureFew influencing factorsWithdrawing sample devicesGreenhouseEnvironmental engineering
The invention provides a greenhouse gas discharging and collection device for soil at different depths. The device comprises more than two gas collectors with different lengths of circular gas storage tubes. The device is simple in structure, convenient to use and suitable for collecting greenhouse gas at different depths of soil with non-saturated water and soil with saturated water in a non-growth season and can continuously collect gas such as CO2, N2O and CH4; when the gas is collected, the environment interference is small, so that the influence factor in a gas collection process is reduced; the device is easy to operate; the collected greenhouse gas has representativeness in discharging intensity in a unit area; and the device can continuously observe discharging of the greenhouse gas of the soil for many years and can observe the accumulation situation of the greenhouse gas in a freezing process and the discharging situation in a soil melting process. The device can be widely applied to observation and research on discharging of the greenhouse gas of various types of soil at different depths in a farmland, a grassland, a wet land and the like.
Owner:NORTHEAST INST OF GEOGRAPHY & AGRIECOLOGY C A S
Quick regenerating method for vegetation of returning farmland to grassland zone in extremely cold areas
The invention relates to a quick regenerating method for vegetation of returning farmland to grassland zone in extremely cold areas, which comprises the following steps of: (1) mixing and seeding annual pasture oat and perennial pasture on the farmland returning to grassland zone, and building an artificial pasture integrating mowing and grass seed harvesting functions; (2) ploughing and raking the artificial pasture; (3) sowing the seeds and applying base fertilizer; and (4) mowing the oat forage grass in the first year and harvesting the grass seeds and mowing the perennial pasture in the second year or later after covering and compacting the grass seeds in the step (3). The method utilizes the annual oat and perennial pasture to form different biotypes of pasture mixing and seeding community, so that the weed spreading can be obviously suppressed, the soil humidity and air humidity are obviously improved, the evaporation capacity and water loss and soil erosion intensity are reduced, therefore, the soil exposure time is short after regeneration of the grassland zone, the vegetation covering is quick, the water retention and preservation of soil moisture effect is obvious, and the ecological and economic benefits are remarkable.
Owner:CHINA ACAD OF SCI NORTHWEST HIGHLAND BIOLOGY INST +1
Multi-rotor unmanned aerial vehicle (UAV) for searching and rescuing at night
InactiveCN104477399AStable returnReliable lockingAircraft componentsRotocraftPropellerUncrewed vehicle
The invention discloses a multi-rotor unmanned aerial vehicle (UAV) for searching and rescuing at night, and belongs to the technical field of searching of unmanned aerial vehicles. The multi-rotor unmanned aerial vehicle is characterized in that six arms extend from a rack along an UAV body; a foot stand is arranged at the lower part of the UAV body; a searching and rescuing machine hanging rod is loaded at the bottom part of the UAV body; a flying lifting mechanism is arranged at the tail ends of the arms; propellers are movably connected with a motor through a quick-dismounting part; a searchlight mechanism comprises a wide-angle searchlights which is hung to the arms, and a projector searchlight which is hung to the tail end of a searchlight hanging rod; a loudspeaker, a shooting mechanism and a thermal imaging mechanism of a searching and rescuing mechanism are hung to the bottom part of the UAV body through the searching and rescuing mechanism hanging rod. According to the multi-rotor UAV, the searching and rescuing device can be quickly mounted on the multi-rotor UAV and provides visual light covering about 7,000 square meters to support people searching and rescuing at ground; meanwhile, large light beam is provided for a key area to assist searching at ground; the multi-rotor UAV is applicable to searching and rescuing, patrolling, handling of group affairs and anti-terrorism surveillance in mountain regions, forest, grassland, water and bog regions.
Owner:当涂县湖阳蟹阳湖电子商务有限公司
System and method for detecting small burning spots of forest or grassland fires by using environmental minisatellite HJ
InactiveCN102193093ARadiation pyrometryCharacter and pattern recognitionBrightness temperatureGrassland
The invention relates to a system and method for carrying out automatic detection on small burning spots of forest or grassland fires by using the infrared (IRS) data of an environmental minisatellite HJ. The method comprises the following steps: radiometric correction, brightness temperature calculation, reflectivity calculation, cloud and water recognition, potential burning spot determination,absolute burning spot determination, background characteristic analysis, relative burning spot determination, burning spot confidence, and detecting burning spot output. According to the scheme provided by the invention, based on the characteristics of the environmental minisatellite HJ, the automatic detection on forest or grassland fires can be realized only by using the infrared (IRS) data, thereby enhancing the disaster prevention and reduction capacities of domestically-produced satellites in China, and promoting the industrialized application process of domestically-produced satellites.
Owner:BEIJING NORMAL UNIVERSITY
Combined remediation method for deteriorated grasslands and special grassland operating machine
The invention belongs to the technical field of the mechanized remediation of grasslands, and relates to a combined remediation method for deteriorated grasslands and a special grassland operating machine. The method comprises the following steps of: cutting roots of grass on the grasslands to be remediated, and loosening soil underground and forming seed furrows and fertilizer furrows in the soil along cutting joints; sowing and fertilizing alternately, and applying seeds and fertilizers into the corresponding furrows; and compacting the furrows. The special grassland operating machine comprises a cutting assembly, a vibratory soil loosening and furrowing assembly, a seed and fertilizing applying assembly, a compaction assembly and a depth limit assembly. By the combined remediation method and the special grassland operating machine, the root cutting, vibratory soil loosening and furrowing, sowing, fertilizer application and compaction are combined, and multiple remediation modes are combined, so the combined remediation method and the special grassland operating machine are suitable for the sowing for fertilizer application and fertilizing for resowing in the process of remediating the deteriorated grasslands with high compactness and are also applicable to farmlands with poor soil texture, and can better remediate grasslands deteriorated naturally or due to man factor.
Owner:CHINA AGRI UNIV
Method for improving hardened deteriorated grassland and special elastic claw type loosener
Owner:CHINA AGRI UNIV
Data acquisition and analysis method for river valley grassland degeneration conditions
InactiveCN108170926AIntuitive data analysisSpatial difference is obviousData processing applicationsDesign optimisation/simulationVegetationInformation processing
The invention discloses a data acquisition and analysis method for river valley grassland degeneration conditions. The method specifically comprises the following steps of: NDVI data obtaining, DEM data obtaining, information processing, data conversion, vegetation coverage inversion, grassland degeneration grading, grassland degeneration cold / hot spot analysis, grassland degeneration temporal andspatial variation analysis, grassland degeneration cold / hot spot distribution and evolution, river valley grassland degeneration altitude differentiation, grassland coverage analysis and grassland degeneration factor analysis. Through a grassland degeneration grading map, the method is capable of integrally analyzing areas with obvious grassland degeneration grades in tested areas, so that the data analysis is more intuitional; cold / hot spot analysis indicates that the spatial difference between grassland degeneration and improvement is more obvious; through grassland coverage analysis, degeneration features of grasslands with different coverage grades can be quantitatively analyzed and expressed; and through analysis of climate temperatures, rainfall capacities and grazing conditions, the analysis of the grassland degeneration conditions is more correct.
Owner:YILI NORMAL UNIV
Grassland productivity estimation method based on remote sensing and GIS (geographic information system)
The invention relates to a grassland productivity estimation method based on remote sensing and a GIS (geographic information system). The method solves the defects that the traditional method is time-consuming and labor-consuming when estimating grassland productivity, and difficultly realizes large-range and long-term continuous acquisition. The method comprises the steps of: Step I, preprocessing grassland raw data, Step II, selecting an NDVI (normalized difference vegetation index), an RVI (ratio vegetation index), an MSAVI (modified soil adjusted vegetation index) and an EVI (enhanced vegetation index) to construct various grassland productivity estimation models based on the vegetation indices, Step III, selecting the optimal grassland productivity estimation model, Step IV, making grid operation by using the optimal grassland productivity estimation model and the vegetation indices to obtain a grassland productivity spatial distribution chart, estimating total grassland productivity according to total grassland area, and Step V, establishing a grassland productivity prediction model by taking the vegetation indices as independent variables and the grassland productivity in a future certain period as a dependent variable. The method is applied to the field of ecology and the remote sensing.
Owner:NORTHEAST INST OF GEOGRAPHY & AGRIECOLOGY C A S
Super absorbent soil reclamation plant growth substance and preparation method thereof
InactiveCN101548638AImprove survival ratePrevent compactionCultivating equipmentsSoilless cultivationThermal insulationGrassland
The invention relates to a soil reclamation plant growth culture matrix and a preparation method thereof. The matrix comprises the following components: 50 to 70 weight percent of UF foamed plastics, 30 to 50 weight percent of straw powder, 1 to 2 weight percent of decomposed organism organic fertilizer, 1 to 2 weight percent of 40 percent ammonium bicarbonate solution, 0.5 to 0.7 weight percent of diammonium phosphate, and 0.2 to 0.5 weight percent of potassium chloride. The matrix has water retention property, nutrient preserving property, thermal insulation and ventilated permeability so as to prevent the water and nutrient from losing, thereby creating a good hot bed suitable for the growth of seeds and plants; besides, the matrix can carry out effective ecological compensation to plants during dry periods, and simultaneously lead the root systems of plants to grow fast and take root so as to absorb the water under surface layer and create beneficial conditions for the future growth of plants. Taking poplars as an example, the survival rates of growing in desert, grassland and improved kaline soil are respectively 86.7 percent, 93.3 percent and 96.7 percent.
Owner:刘兴国
Natural planting method of mushroom
InactiveCN102084782AQuality improvementIncrease productionHorticultureGround temperatureSecondary forest
The invention discloses a natural planting method of a mushroom, solving the problems of low quality and easiness of manual pollution because the traditional mushroom planting technology is limited in the room. The natural planting method comprises the following steps of: 1, culturing a strain: separating a field-planted sporocarp to obtain a patent seed, culturing the patent seed according to the conventional expanding propagation method, continuously culturing a breeder seed to obtain a planting strain; 2, culturing a mycelium; 3, selecting a natural environment for planting: selecting an original forest, a secondary forest and an artificial forest with the ground temperature of 4-15 DEG C, the air humidity of 42-88 percent, the soil pH value of 6-7 and the forest land and grassland canopy density of 0.3-0.7; and 4, managing fruiting. The mushroom is cultured and planted by using the natural environment, and the mushroom sporocarp grows and develops under a natural and wild condition to ensure that the growth environment of the mushroom is more excellent and the product quality is better.
Owner:XINZHOU CITY HUIHENG AGRI FORESTRY & ANIMAL HUSBANDRY OVERALL DEV
Environmental protection chicken breeding method on a large scale
The invention discloses a scaled chicken raising method which comprises, range breeding by selecting grassland or artificial pasture ground with fine ventilation and high height, feeding with concentration material containing no antibiotics, hormones and animal protein as well as energy feeding-stuff, wherein the chickens only eat non-polluted grass, seeds, edible mushroom and insects, thus the feeding-stuff can be conserved and the raising cost can be reduced.
Owner:张振武
Method for mixedly sowing annual ryegrass and perennial grass
The invention relates to a method for mixedly sowing annual ryegrass and perennial grass, which is suitable for establishing artificial grassland in south, in particular to a method for establishing artificial grassland by introducing annual ryegrass onto perennial artificial grassland. The annual ryegrass and the perennial grass are mixedly sowed by a certain proportion. By utilizing the advantages of rapidly growing of the annual ryegrass, the cutting is performed at the right time, the grass yield in season is improved, and the height can be controlled by cutting. Therefore, the growth of the perennial grass can be ensured, the growth of the weeds is inhibited because of insufficient light, and then the weeds gradually disappear from the grass. The invention solves the problems of low grass yield of the artificial grassland established in the current year in south and heavy weeds, thereby being of great significance for popularizing artificial grassland growth in south and promoting the development of grassland agriculture in south.
Owner:SOUTHWEST UNIVERSITY
Grazing hybrid sowing method
InactiveCN1836479AHeat resistantExtend the period of useSowingHorticulture methodsHigh humidityFestuca arundinacea
The mixed pasture seeding method includes the following steps: 1. mixing leguminous pasture seeds and gramineous pasture seeds in the weight ratio of 2 to (2.6-3.4) and including alphalfa, cocksfoot, Festuca arundinacea, and Lotas japonicus or Tifolium pratense; and 2. seeding the said posture seeds in the land of slight alkaline yellow soil at height above sea level of 600~800 meters at high temperature and high humidity conditions to establish artificial grassland. The method is simple and the established artificial grassland has the features of high pasture yield and quality and is heat resistant, drought resistant and aridity resistant.
Owner:重庆市畜牧科学研究院
Forest and grassland fire prevention and early warning monitoring system
ActiveCN109448295ARealize monitoringAchieve network coverageForest fire alarmsFire alarm electric actuationFire riskData information
The invention discloses a forest and grassland fire prevention and early warning monitoring system and relates to the fire hazard monitoring technology field. The system comprises static monitoring points and dynamic monitoring points. The plurality of static monitoring points and at least one dynamic monitoring point monitor monitoring data used for determining a fire probability and a fire condition in a set area. And then the monitoring data is transmitted to a monitoring center via a signal transmission network. The monitoring center analyzes and generates corresponding alarm data information, and sends to the mobile terminal of a firefighter through an alarm information sending network. The static monitoring points and the dynamic monitoring points are combined to realize the networkcoverage of the monitoring area and simultaneously emphasize a key point. The intensity of fire monitoring is flexibly adjusted according to the fire probability in the monitoring area, and accurate assessment and early warning are performed on the fire and a fire risk in a targeted mode. Because various factors influencing the fire probability are continuously changed, the above scheme can be adaptively adjusted and monitoring accuracy is high.
Owner:SHIJIAZHUANG SHENG MING TECH CO LTD
Automatic northern grassland desertification monitoring device
InactiveCN103344283AReal-time measurement workLong-term measurement workTransmission systemsIndication of weather conditions using multiple variablesEvaporationData acquisition
The invention relates to an automatic northern grassland desertification monitoring device. The automatic northern grassland desertification monitoring device comprises a support and a data acquiring and sending terminal. The bottom end of the support is fixedly installed under the earth's surface, a solar cell panel, a lead storage battery, a horizontal support rod and the data acquiring and sending terminal are installed on the support, and the data acquiring and sending terminal and the storage battery are placed in an airtight waterproof box. An overground air temperature and humidity sensor, an overground CO2 sensor and an air velocity sensor are installed on the horizontal support rod. A total radiation amount sensor, an earth's surface air temperature and humidity sensor, an earth's surface CO2 sensor, an evaporation amount sensor and a rainfall capacity sensor tightly adhere to the earth's surface. A soil moisture temperature sensor is buried under the ground, the sensors and the data acquiring and sending terminal are powered by the lead storage battery, and signal lines of the sensors are connected with the data acquiring and sending terminal through lead wires in the support. The automatic northern grassland desertification monitoring device has the advantages of being simple in structure, convenient to operate and capable of adapting to a working environment of a northern grassland and achieving real-time and long-term measurement work.
Owner:INNER MONGOLIA AGRICULTURAL UNIVERSITY
Remote sensing technology-based grassland locust plague progressive prediction method
ActiveCN103955606AHigh accuracy of resultsHigh precisionSpecial data processing applicationsVegetationSensing data
The invention discloses a remote sensing technology-based grassland locust plague progressive prediction method. According to the method, the distribution of key habitat elements which influencing the development of a grassland locust population is obtained by the means of quantitative remote sensing inversion, meteorological station observation and the like, wherein the key habitat elements subjected to remote sensing inversion comprises land surface temperature, vegetation coverage and soil moisture; the spawning suitability, the incubation suitability and the growth suitability of locusts are analyzed quantitatively by establishing an evaluation model, and a locust plague risk early prediction model is established; a locust plague risk level prediction result is corrected by utilizing the remote sensing observation of an incubation period and a third period and the locust density data measured in the field according to the incubation and development time axes of the locusts, and the situations of a grassland locust plague are predicted progressively. According to the technical scheme provided by the invention, the progressive update of sensitive habitat elements is obtained by performing quantitative inversion on remote sensing data with higher time resolution, so that the prediction precision of a locust plague monitoring and prediction model is improved.
Owner:PEKING UNIV
Technology for establishing alfalfa grasslands at cold regions
The invention discloses technology for establishing alfalfa grasslands at cold regions. The technology comprises the following steps of: seeding preparation, namely selecting stub land of which the preceding stubs are closely planted crops, ploughing and harrowing soil, manuring barnyard manure, and weeding; alfalfa seeding, namely seeding in early May, backfilling shallow soil, and raking the soil smooth before being frozen, wherein the seeding row spacing is 30 to 40 centimeters; the seeding ditch depth is 10 to 15 centimeters; the seeding quantity is 37.5 to 45kg per hectometer; and the seeding depth is about 2 centimeters; establishing management, namely weeding when the height of alfalfa plants is about 10 centimeters and then watering and manuring the barnyard manure or a phosphatic fertilizer; grassland mowing, namely mowing in early October in the first year, and moving the first stubs in middle July and the second stubs in late September in next year; and winter irrigation, namely performing winter irrigation before the soil is frozen. By selecting cold-resistant alfalfa varieties and suitable cold-resistant planting technology, the alfalfa can smoothly live through a first winter and spring, the aim of establishing the alfalfa grasslands at the cold regions is fulfilled, and the problems of leguminous forage deficiency and nutritional imbalance of domestic animals at the cold regions are solved.
Owner:GANSU AGRI UNIV
Unmanned helicopter-based natural grassland animal husbandry management method
The invention relates to an unmanned helicopter-based natural grassland animal husbandry management method. The method comprises specific steps: 1) a color positioning device is arranged on each animal husbandry unit; 2) a route of the unmanned helicopter is planned according to the area and the shape of the grassland in the animal husbandry area; 3) according to the set route, the unmanned helicopter detects and tracks each color positioning device and the number of the color positioning devices within a certain range via remote sensing equipment carried on the body of the unmanned helicopter; and 4) when the number of the color positioning devices tracked by the unmanned helicopter in the third step is reduced and the reduction continues for a certain time, the unmanned helicopter expands the area covered by the route. When the unmanned helicopter-based natural grassland animal husbandry management method of the above technical scheme is adopted, the animal husbandry unit in the natural grassland can be monitored in each time during the cruise process of the unmanned helicopter; and in addition, through measuring the number of the animal husbandry units, safety of the animal husbandry units can be ensured.
Owner:恒创数字科技(江苏)有限公司
Method for estimating vegetation coverage based on vegetation-soil moisture response relation
InactiveCN101908196AData processing applicationsSpecial data processing applicationsAlgorithmEstimation methods
The invention discloses a method for estimating coverage based on NDVI and vegetation-soil moisture response of NDVI to TVDI response sensibility. The vegetation coverage comprises bare land coverage fcb, grassland coverage fcg and forest and shrub blended coverage fcf / s, wherein the fcf / s comprises the forest coverage fcforest and the shrub coverage fcshrub. The method comprises the following steps: determining the values of vegetation indexes NDVI and TVDI of a normalized difference value of each pixel in a research zone; determining the value of alpha of the value of NDVI of each pixel in the research zone to TVDI sensitivity; constructing a triangular scatter diagram of the research zone based on the values of alpha and the NDVI of each pixel in the research zone; determining the values of alpha and NDVI of the end member of each endpoint of a triangle based on the triangular scatter diagram; and carrying out linear resolution on each pixel in the research zone to obtain fcb, fcg and fcf / s of each pixel in the research zone by using a least square method, according to the values of alpha and NDVI of each determined end member at each endpoint of the triangle and under the constraint condition that fcb is not less than 0 and is not greater than 1, fcg is not less than 0 and is not greater than 1 and fcf / s is not less than 0 and is not greater than 1.
Owner:BEIJING NORMAL UNIVERSITY
Hydraulic saw type forage grass root cutter
The invention discloses a hydraulic saw type forage grass root cutter for root cutting and rejuvenation of forage grass, which comprises suspensions, a frame, hydraulic control devices, hydraulic cylinders, rotary shafts, four-bar reciprocating mechanisms and blades. After the hydraulic saw type forage grass root cutter is used to saw soil and grass roots, small slits with local looseness are formed on grassland. Extrusion friction and transverse displacement of the blades penetrating into the soil are fully overcome, no-turf-destruction tillage is realized, interference on the grass roots is low, operational energy consumption is effectively lowered for implements, efficiency is improved, and power consumption is lowered for tractors. The hydraulic saw type forage grass root cutter is applicable to mechanical soil loosening and root cutting for pastures and lawns.
Owner:SHANXI AGRI UNIV
Portable unmanned aerial vehicle taking-off and landing platform with four adjustable legs and foldable taking-off and landing plane
The invention relates to a portable unmanned aerial vehicle taking-off and landing platform with four adjustable legs and a foldable taking-off and landing plane and belongs to the technical field ofpower transmission line operation and maintenance devices. The portable unmanned aerial vehicle taking-off and landing platform is particularly suitable for power transmission line unmanned aerial vehicle line inspection and comprises the foldable taking-off and landing plane, a foldable and height-adjustable supporting mechanism is mounted below the taking-off and landing plane, and the taking-off and landing plane is further provided with an unmanned aerial vehicle mounting mechanism for mounting an unmanned aerial vehicle, an unmanned aerial vehicle fixing mechanism for fixing the unmannedaerial vehicle, and a level adjustment mechanism for level adjustment. The portable unmanned aerial vehicle taking-off and landing platform is simple in structure, convenient to carry and low in costand is provided with the four adjustable legs and the foldable taking-off and landing plane and suitable for the ground conditions of weed infestation ground, uneven ground and the like such as mountainous areas, farmlands, grasslands and the like.
Owner:YANTAI POWER SUPPLY COMPANY OF STATE GRID SHANDONG ELECTRIC POWER +1
Route planning algorithm of intelligent lawn mower
ActiveCN106643719AFacilitate time-sharing and segmented work divisionReduce complexityNavigational calculation instrumentsWork patternGrassland
The invention discloses a route planning algorithm of an intelligent lawn mower. The route planning algorithm includes the steps: firstly, dividing a working grassland into a plurality of polygonal working areas according to topographic conditions in a working area set by the intelligent lawn mower, secondly, acquiring accurate positional coordinate information of working area boundaries through a vehicular GPS (global positioning system) device in a field surveying and mapping manner to obtain boundary vertexes and boundary linear equations of the polygonal areas, setting inner angles of the polygonal working areas which are smaller than or equal to 180 degrees, and dividing one polygonal working area into two polygonal working areas if the inner angle of the polygonal working area is larger than 180 degrees; calculating a reciprocating traversal linear route in each working area according to effective coverage width. According to the route planning algorithm, the accurate positional coordinate information of the working area is acquired by the aid of a GPS, so that a working area map is made, the working area is divided into a plurality of polygonal areas, time dividing and stage dividing working is facilitated, different working modes are selected, a linear section is planed, so that complexity of the route planning algorithm can be reduced, and later autonomous navigation control is conveniently achieved.
Owner:JIANGXI HONGDU AVIATION IND GRP
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