74results about How to "Reduce non-point source pollution" patented technology

The invention belongs to the technical field of treatment of city rainfall runoff, and in particular relates to a quality-graded collecting and purifying process and system for rainfall runoff. Firstly, the rainfall runoff on the ground surface flows into an intercepting pool through a rain well and a rain pipe, the early stage runoff stored in the intercepting pool is pumped into a sewage pipe network by a submersible sewage pump and flows to a sewage factory along with sewage; and the later stage runoff overflows and enters a percolating pool through an effluent weir, and is directly drained into the natural water body after being filtered and absorbed by a soil covering layer, a quartz sand layer, an anthracite layer and a pebble layer in the percolating pool. The seriously polluted early stage runoff and the lightly polluted later stage runoff can be effectively separated by the process and system, and the runoff flows to the respective treating units, and simultaneously, the later stage runoff is treated to achieve the water standard that treated later stage runoff can be discharged to the natural water body and water bloom of the water body is not easily induced, thereby finally reducing non-point source pollution caused by the runoff and protecting the water quality of the natural water body.

The invention discloses an ecological comprehensive treatment system of a northern mountain river channel. The system comprises three sub ecological systems of an ecological permeable dike built on the upstream of a main stream and a branch stream of a mountain river, a reservoir pond arranged at the middle and downstream area of the mountain river and a wet land communicated with the reservoir pond, and adopts an ecological treatment mode of closure-storage-preservation. The construction method comprises the steps of: a) building of the ecological permeable dike; b) setting of a triangular pyramidal wood pile stone cage; c) building of the reservoir pond; d) planting of plants of the reservoir pond; e) building of a wet land system; and f) recovery of a river bank band. The system and the construction method can effectively intercept the mountain debris flow and the river non-point source pollution, adjust the river runoff, improve the hydrologic conditions of the mountain river in non-flood season, decrease the dry season of the mountain river, and facilitate to recover the ecological system of the mountain river. Meanwhile, traditional depressions and empty ponds in the mountain river can be used in construction, so that the engineering building cost is reduced, and the self-cleaning capacity of river water is improved.

The invention provides a solanum tuberosum and double cropping rice rotation crop rotation culture method for improving a south double cropping rice paddy soil micro-aggregate structure, and belongs to the field of agricultural production. The method mainly comprises the first step of solanum tuberosum high-yield cultivation and the second step of early rice and late rice high-yield cultivation, wherein the first step comprises the substeps of preparation before seeding, variety selection, cutting of seed solanum tuberosum, seeding at suitable time and coverage of straw and a mulching film, field management comprising timely film breaking, topdressing, drainage and insect disease prevention, timely harvesting, and field returning of solanum tuberosum stem leaves and straw for coverage, and the second step comprises the substeps of variety selection, seedling transplanting, filed management comprising scientific fertilization, weeding, irrigation and insect disease prevention, timely harvesting and field returning of straw. By means of the method, south double cropping rice paddy winter agriculture can be reasonably developed, the rice paddy soil micro-aggregate structure is effectively improved, soil is fertilized, economic benefits of solanum tuberosum in one season are increased on the basis of ensuring the double cropping rice yield, the purposes of improving the rice paddy soil structure and obtaining high-yield year-round crops are achieved, and the popularization value is high.

The invention provides an efficient and environment friendly irrigation method for rices in a cold region, which relates to a rice irrigation method. The invention is to solve problems of water waste, low water production efficiency, poor resistance ability and low rainwater utilization rate in the traditional irrigation method for the rices in the cold region. The method comprises the following steps of: first irrigating the rices according to water usage of 80-120 m3 / acre in a field dipping stage of the rice; and then dipping the field for 3-5 days; controlling water usage of a rice field in a rice seedling establishment stage, an early tillering stage, a middle tillering stage, a jointing-booting stage, a heading-flowering stage and a milk-ripe stage between a lower limit and an upper limit, wherein the lower limit is that the water content in the soil of the rice field is the saturated water content of 70-90%, and the upper limit is that the water depth of the rice field is 0.1-3 cm; keeping the water content in the soil of the rice field at the soil saturated water content of 70-80% in a later rice tillering stage; and supplementing once irrigation to the rice field in an early rice yellow ripening stage; and then naturally drying the rice field by air. The efficient and environment friendly irrigation method for the rices in the cold region, provided by the invention, is mainly used for irrigating the rices in the cold regions.

The invention relates to a hedge earth bank ridge-direction pitting field having functions of conserving water, soil, nitrogen and phosphorus. The field comprises ridges and multiple earth banks, and the ridges comprise ridge bodies and furrows; the multiple ridge bodies and the multiple furrows are arranged in parallel and at intervals; multiple earth banks are arranged in each furrow in the extending direction of the corresponding furrow, and each earth bank is provided with a hedge. The invention further relates to a cultivation method of the ridge-direction pitting field. The cultivation method comprises the steps of measuring the slope and length of the field; making selection between downslope ridge culture or cross-slope ridge culture according to the measured slope and length, and arranging the multiple furrows and ridge bodies, wherein the furrows and the ridge bodies are arranged in parallel and at intervals; arranging the multiple earth banks in each furrow in the extending direction of the corresponding furrow; planting plants on each earth bank for forming the corresponding hedge. According to the hedge earth bank ridge-direction pitting field and the cultivation method, the hedges are reasonably arranged, the stability and firmness of the earth banks are improved, meanwhile, the water, soil, nitrogen and phosphorus conservation effects are greatly improved, the water and soil conservation effect is made to be more ideal, environmental benefits are achieved, and meanwhile economic benefits are combined.

The invention discloses an ecological circulatory system for recycling and harmless treatment of livestock and poultry feces. According to the system, firstly, plant lactic acid bacteria are utilized to treat the original livestock and poultry feces, residues of harmful substances in the original livestock and poultry feces are removed, and harmless livestock and poultry feces are obtained; secondly, hermetia illucens eggs are added into the obtained harmless livestock and poultry feces, and hermetia illucens larvae are cultured to obtain hermetia illucens larvae, puparium and larva dungs, wherein the hermetia illucens larvae serve as breeding feed, puparium is prepared into chitin, and the larva dungs serve as organic fertilizer. According to the ecological circulatory system for the recycling and harmless treatment of the livestock and poultry feces, the mode of using the plant lactic acid bacteria to deodorize the livestock and poultry feces at first is put forward for the first time, the residues of the harmful substances in the feces are degraded, the obtained harmless livestock and poultry feces are utilized to culture hermetia illucens, and in this way, the obtained hermetia illucens larvae, puparium and larva dungs are all harmless products.

The invention discloses a sand settling and deoiling device, which comprises a separation well, a bottom baffle is arranged inside the separation well, a separation area is above the bottom baffle, and a sand settling area is below the bottom baffle, and the separation area is provided with a separator, drainage Pipe and tangential water inlet pipe, the separator is located in the center of the separation zone, including inner and outer cylinders that are concentric and connected at the top, the bottom of the inner cylinder is connected with an inclined deflector, and the drain pipe communicates with the cavity between the inner cylinder and the outer cylinder And outside the separation well, the tangential water inlet pipe connects the external sewage and the cavity between the outer cylinder and the inner wall of the separation well, and the tangential water inlet pipe is tangent to the outer wall of the outer cylinder; the bottom baffle has the same cross-sectional size as the inner wall of the separation well, and is located in The position directly below the cylinder is provided with a grit chamber, and the grit chamber connects the separation area and the grit chamber. The invention can effectively reduce the silt content and oil concentration in the rainwater, and reduce the non-point source pollution discharged into urban water bodies.

The invention discloses a method for restoring cadmium pollution soil in an ecological mode through turfgrass, and relates to the technical field of heavy metal pollution soil ecological restoring. The method comprises the steps of (1) cadmium-resisting Bermuda grass screening, (2) ecological restoration of cadmium pollution soil and (3) maintenance and management. According to the method, the cadmium-resisting Bermuda grass screened through graded-concentration cadmium stress treatment is used for restoring the cadmium pollution soil in the ecological mode, the bare earth surface can be quickly covered, the ecological afforestation problem of cadmium pollution soil is effectively solved, the purpose of continuously extracting and removing cadmium in soil can be achieved through grass cutting, and the method is easy to popularize and apply, meets the afforestation requirement, effectively lowers cadmium face source pollution, and has good social benefits and environment benefits.

The invention relates to a water level and water quality layering control weir of a drainage ditch of a rice field. Three types of five weir plates in different heights are designed according to the characteristics of each growth period of rice; the heights of the five weir plates are determined according to the buried depth of underground water required by the rice in different growth periods; by combining the five weir plates, outlet control weirs in different heights of the drainage ditches can be formed, and the drainage control requirements of rice reviving, early stage of tillering, late stage of tillering, booting stage, tasseling stage, milky ripeness stage, yellow ripening stage and late stage of fertilizing; two hand grabs are arranged on the lateral surface of each weir plate; an arc rubber waterstop band is arranged at the bottom of each weir plate which ensures overall seamless joint water stop among the weir plates; doorframe grooves are arranged on two sides of the drainage ditch; rubber waterstop bands are arranged on two sides in the doorframe grooves; the weir plates can be slidingly taken out or placed into the frame grooves and cannot leak water; two pull rod handles for taking and placing the weir plates are additionally arranged; and rhombus rings of the pull rod handles can be sleeved with hand grabs on the weir plates to place or take out the weir plates from the doorframe grooves on two sides of the drainage ditch. The invention has the advantages that the combined height of the weir plates cannot cause the flooding damage on the rice, can be used for retaining nitrogen, phosphor and other nutrients in the rice field and reducing the pollution of high-concentration nitrogen and phosphor in the drain to a water body. The invention saves the water consumption for irrigation, improves the utilization rate of underground water resources, has favorable waterstop effect among the weir plates and is convenient to manually operate.

The invention discloses a mixing synergist capable of improving the utilization rate of a rice fertilizer, and a use method of the mixing synergist, relating to the technical field of fertilizers used by rice planting. The mixing synergist is prepared by the following raw materials in parts by weight: 1-3 parts of a urease inhibitor, 1-2 parts of a long-acting compound fertilizer additive, 0.5-1.2 parts of a synergist, and 0.5-1 part of nano carbon. The mixing synergist has the characteristics of improving the utilization rate of the rice fertilizer and the grain yield, reducing the flow rate of nitrogen and phosphorus of a farmland to a water body and soil, and controlling the agricultural non-point source pollution generated by the farmland from the source and the like. The mixing synergist capable of improving the utilization rate of the rice fertilizer provided by the invention is a mixing synergist capable of improving the utilization rate of the rice fertilizer and reducing the nitrogen and phosphorus loss, and is suitable for being applied in early and late rice planting.

The invention relates to rainwater treatment and recovery, and provides rainfall runoff pollution treatment equipment with a self-cleaning function. A water storage skip bucket communicated with inlet water is arranged in a cell body; the both ends of the water storage skip bucket are movably connected with two opposite inner lateral faces of the cell body, and are fixedly connected with the cell body through a bolt; a sediment hopper is arranged on the cell bottom of the cell body; a submersible sewage pump is mounted in the sediment hopper; an overflow weir hopper is further arranged in the cell body; and the weir top of the overflow weir hopper is lower than the upper edge of the cell body. For the purpose of convenience for automatic control, the rainfall runoff pollution treatment equipment further comprises a PLC (Programmable Logic Controller) electric control cabinet; a floater liquid level switch is arranged in the sediment hopper; and the PLC electric control cabinet controls the on and off of the submersible sewage pump according to received signals transmitted by the floater liquid level switch and controls the opening and closing of the bolt simultaneously. According to the rainfall runoff pollution treatment equipment provided by the invention, initial-stage runoff with heavier pollution and later-stage runoff with lighter pollution can be effectively separated and flow to own treatment units. Finally, the area pollution caused by runoff is removed. Therefore, the water quality of the natural water body is protected, and the self-cleaning of the equipment is realized.

The invention belongs to the field of organic compound fertilizers and relates to a production method of a natural pumice loss-controlling organic compound fertilizer. The fertilizer in the prior art has serious loss, causes the environmental degradation and brings great harm to human beings. The production method has the following steps: taking raw material fertilizers of nitrogen, phosphorus and potassium, mixing with natural pumice powder which is smashed into 120 meshes and an organic fertilizer, uniformly stirring, preparing into mixed raw materials, then granulating, drying, screening, weighing and packaging. The weight of natural pumice in the fertilizer accounts for 10-30% of the total weight of the fertilizer; and the content of organic matters is 10-20%. The content of the nitrogen, the phosphorus and the potassium in the fertilizer is 20-40%. The production method has the advantages of simple production process and convenient use, and can control the nutrient loss, protect the ecological environment, reduce the fertilizer application cost, improve the utilization rate of the fertilizer, improve the physical and chemical properties of the soil and promote the stable and high yield of crops.

The invention provides a biochar livestock and poultry feed additive as well as a production method and a using method thereof. The biochar livestock and poultry feed additive comprises the following components according to weight percent: 80-87.5% of biochar and 12.5-20% of rectified biomass distillate. During the use, the biochar livestock and poultry feed additive can be mixed with feed powder, can also be subjected to mixing granulation for use, and can also be granulated independently for use; the biochar livestock and poultry feed additive can effectively improve the productivity of livestock and poultry and improve the carcass quality of livestock and poultry, is a natural and green feed additive which is low in cost, has a stable chemical structure, is convenient to process and store, safe to use and free of incompatibility and can replace antibiotic drugs, and has a broad application prospect.

The invention relates to a corrosion-resistant and beneficiating non-point source pollution control method for a spring corn slope cropland. The method comprises the following steps of isometry mulch laminating and transplanting of narrow rows, soil anti-corrosion conditioner applying of wide rows and one-time reasonable fertilization. Advantages of single technologies such as isometry mulch laminating of a slope, applying of a soil anti-corrosion conditioner and slow release fertilizer applying are integrated to overcome disadvantages, so loss of water, soil and nutrient is reduced and soil quality is improved. Isometry mulch laminating of a cross slope is combined with a high molecular chemical-physical conditioner and the synergism slow release fertilizer, and labor and capital investments are reduced. Compared with the traditional method in which only pure ridge culture of cross slopes, straw mulching and excessive fertilizer applying are adopted, the corrosion-resistant and beneficiating non-point source pollution control method for the spring corn slope cropland has the advantages of improving the water content by 5-9%, reducing soil bulk weight by 0.05-0.1g / cm<3> and reducing surface runoff by about 15%.

The invention provides a U-shaped modular extensible multifunctional spraying and dripping irrigation system, and belongs to the field of irrigation of farmland water conservancy, garden economic crops and greenhouse crops. The system comprises a power machine pump, a suction inlet filter, a spraying irrigation fertilizer application device, a head drying pipe, a spraying irrigation control valve,a dripping irrigation control valve, a spraying irrigation branch pipe, a sprayer and auxiliary device, a dripping irrigation pressure reduction valve, a water power balance branch pipe, a dripping irrigation fertilizer application device, a dripping irrigation filter, a micro-dripping irrigation branch pipe, a micro-dripping irrigation module, a capillary tail pressure meter and a drainage ditch. According to the system, spraying irrigation and dripping irrigation can be simultaneously and independently implemented, the system has irrigation, fertilization and drainage functions, water powerdesign is reasonable, investment cost can be controlled, movable and fixed modes can be adjusted, irrigation areas are easily widened, and the system is high in adaptability and utilization rate.

The invention discloses matrix carrier type slow-release urea based on straw and a preparing method thereof. The matrix carrier type slow-release urea is prepared from 74-97.48 parts of urea, 2.5-20 parts of straw, 0.01-4 parts of polyacrylamide and 0.01-2 parts of ferric salt. The preparing method includes the steps that straw is smashed, and the smashed powder, polyacrylamide and ferric salt are sequentially added into urea melt or mixed and added into the urea melt; the mixture is stirred fully, and mixed slurry is prepared into slow-release urea in different particle sizes. The developed matrix carrier type slow-release urea based on the straw is applied to farmlands, nitrogen volatilization and leaching loss are reduced, the use ratio of nitrogen is increased, a carbon source can be provided for soil microorganisms, microbial activity is stimulated, effectiveness of nitrogen is improved, soil organic matter is increased, and the soil structure is improved. The problems that chemical fertilizer is low in use ratio, crop straw burning causes defaults and the straw is difficult to use are solved. The straw-based matrix carrier type slow-release urea is simple in production process and low in cost and has broad application prospects.

The invention provides a preparing method and an evaluating method of an organic pollutant adsorbent. The preparing method includes following steps: placing air-dried crop straws in an opened container, lighting the straws to enable the straws to burn fully, and collecting straw ash after the straws being burned, wherein the straw ash is the organic pollutant adsorbent. The invention also provides the evaluating method of the organic pollutant adsorbent. The evaluating method includes following steps: processing the adsorbent through a density classification method and a repeatedly acid pickling method to obtain light components, heavy components and carbon-based components in the adsorbent; and carrying out an adsorption experiment to a representative soil organic pollutant, with the crop straws which is used for preparing the adsorbent and the prepared adsorbent together, according to a batch equilibrium method for calculating an equilibrium concentration of the organic pollutant on the adsorbent, thereby obtaining an adsorption isotherm of the adsorbent to the organic pollutant. The invention provides the preparing method and the evaluating method of the organic pollutant adsorbent. The methods are simple. The adsorbent is excellent in performance, is stable and reliable, is low in cost and can be widely applied in repair and treatment of soil organic pollution.

The invention relates to a non-point source pollution control-based arterial drainage water quality regulation and control system and an arterial drainage water quality regulation and control method. The system comprises an arterial drainage which is divided into a plurality of control sections, a controller and a plurality of switching wells, wherein each control section has a most unfavorable control point provided with a liquid level instrument; the arterial drainage is provided with a plurality of water outlet pipes; all the switching wells are respectively communicated with the water outlet pipes in a way of one-to-one correspondence; each switching well is provided with a water inlet pipe and an overflow pipe, and is internally provided with a turbidity meter, a conductivity meter and an electric flashboard; each water inlet pipe is provided with a Doppler ultrasonic flow meter; the liquid level instruments, the turbidity meters, the conductivity meters, the electric flashboards and the Doppler ultrasonic flow meters are respectively connected with the controller. The system is simple in structure, convenient in implementation and low in engineering cost. According to the arterial drainage water quality regulation and control method, the system is utilized to calculate the flux of pollutant in the switching wells, and regulation and control are performed according to the principle that water in the switching wells with high flux of pollutant firstly enters the arterial drainage firstly and water in the switching wells with low flux of pollutant waits, so that the double-staggering peak adjustment of water quality and water quantity of the arterial drainage can be realized, and risk of waterlogging is reduced.

The invention discloses a rice and wheat drill sowing under-mulch drip irrigation cultivation method. The method comprises the steps of seed preparation, land preparation, belt type drill sowing, seedling management, irrigation management, fertilization management and disease control. According to the belt type drill sowing, drill sowing, drip irrigation belt laying, bubble film covering and soilcovering manners are adopted for sowing, the drill sowing adopts alternate configuration of wide rows and narrow rows, and drip irrigation belts are laid in the wide rows; the wide rows, the sowing width and the narrow rows are combined into drill sowing belts, the upper portions and the side edges of bubble films are covered with soil, and the plurality of drill sowing belts are planted below each bubble film; and coleophyllum pierces the bubble films in a seed needle erecting period, so that self-film-breaking seedling emergence is realized. According to the rice and wheat drill sowing under-mulch drip irrigation cultivation method, the cultivation method combining drill sowing, bubble film covering and under-film drip irrigation is adopted, incisions or holes are not formed in the films, the coleophyllum is used for breaking the films in the needle erecting period, in-hole weeding is avoided due to the fact that seedling holes are not formed, temperature increasing, soil moisture conservation and drought resistance are achieved, labor is saved, and cost is reduced; and a rice and wheat under-film drip irrigation cultivation technology is optimized and perfected through drill sowing, so that the agricultural planting efficiency is improved, and the rice and wheat yield and quality are improved.

The invention discloses a technology for controlling and eliminating weeds in an alfalfa field by film-side planting. According to the technology, the coverage of the weeds in the alfalfa field can be effectively controlled, and can be reduced by 21 to 46 percent; in addition, the annual yield of alfalfa hay is greatly increased by 19.8 to 152.6 percent; total yield per hectare in three years is increased by 9,387.6 to 9,438.4kg, and if per ton of alfalfa hay is 2,400, economic benefits per hectare can be increased by 22,530 to 22,652 yuan, and efficiency per hectare is equivalently improved by 1,502 to 1,510 yuan; moreover, the using amount of a weed killer is reduced, pollution to the environment is reduced, and the target of low-environmental consumption production of the alfalfa industry can be effectively promoted.

The invention discloses a system and a method for multi-media ecological treatment of rural domestic sewage in cold and arid regions. The system comprises a sewage regulating and deoiling unit (1), a multi-media soil layer system low temperature-resistant strengthening treatment unit (2), a subsurface-surface flow wetland gradient treatment unit (3), a water resource regulation and storage unit (4), a ferment recycling unit (5) and a wind-solar complementary micro-power and heat supply unit (6); the sewage regulating and deoiling unit is sequentially connected with the multi-media soil layer system low temperature-resistant strengthening treatment unit, the subsurface-surface flow wetland gradient treatment unit and the water resource regulation and storage unit; the wind-solar complementary micro-power and heat supply unit is respectively connected with the sewage regulating and deoiling unit and the multi-media soil layer system low temperature-resistant strengthening treatment unit; and the ferment recycling unit is respectively connected with the sewage regulating and deoiling unit, the multi-media soil layer system low temperature-resistant strengthening treatment unit and the subsurface-surface flow wetland gradient treatment unit.

The invention discloses a method for water-saving topdressing of winter wheat in a drought region by foliar fertilization replacing root fertilization. The method is characterized in that in the whole winter wheat growth cycle, urea is applied according to a ratio of 30-37.5kg / 667m<2>, a use ratio of a base fertilizer is 80% and a use ratio of the fertilizer for foliar fertilization replacing root fertilization is 20%; and the method for topdressing by foliar fertilization replacing root fertilization comprises the following steps of applying the base fertilizer to a winter wheat field according to a ratio of 24-30.5kg / 667m<2> by one step in a period from October 2 to 7 every year, and carrying out urea topdressing by foliar fertilization replacing root fertilization according to a ratio of 6-7.5kg / 667m<2> respectively in green-turning, jointing and booting three stages, wherein in each process, urea is applied according to a ratio of 2-2.5kg / 667m<2>, a urea solution is used according to a ratio of 50kg / 667m<2>, and after four o'clock in the afternoon, the fertilizer solution is sprayed on leaf surfaces by a mist sprayer so that foliar fertilization replacing root fertilization is realized. The method for water-saving topdressing by foliar fertilization replacing root fertilization realizes normal topdressing of winter wheat in drought, saves water, labor and fertilizer, and realizes fertilizer direct absorption by leaves thereby improving a fertilizer utilization rate and a fertilizer action rate.

The invention discloses a green manure returning and fertilizing method. The method comprises the following steps of S1, artificially and uniformly sowing common vetch seeds in a field at the end of July to the first ten-day period of August 10-15 days before highland barley is about to be harvested in a valley agricultural area with the altitude of 3800m or below in Tibet; S2, in the first ten days of October, cutting the whole plant of flourishing common vetch into small sections or performing crushing, performing uniform sowing, performing complete field returning, and then performing turning and pressing with the turning and pressing depth of not less than 20cm; S3, leveling land, and performing flood irrigation for 2-3 times to promote decomposition of green manure; S4, in April of the next year, performing intensive cultivation, preparing soil, planting spring highland barley, and strengthening field weed removal and water and fertilizer management; and S5, in the first ten days of August, after the previous crop of highland barley is harvested, fully using hydrothermal resources in the later growth period of the preceding crop, performing ploughing and soil preparation in time for common vetch multiple cropping, and repeating steps from S1 to S3. According to the green manure returning and fertilizing method, reduction of nitrogen fertilizer input is of great significance in slowing down agricultural non-point source pollution.

The invention discloses a method for reducing and controlling non-point source pollution of an oriental cherry nursery. The method realizes reduction and control of non-point source pollution of a nursery through annual interplanting of fresh-eaten broad beans and Vicia sativa L. in an oriental cherry nursery. Through use of broad bean sowing, broad bean planting, broad bean harvest, broad bean plant turning and pressing, Vicia sativa L. sowing, Vicia sativa L. turning and pressing and oriental cherry nursery management, based on nitrogen fixation properties of broad beans and Vicia sativa L., the nitrogen content in the soil is increased and the nitrogen application rate in the nursery is reduced. Through reuse of broad bean and Vicia sativa L. plants in fields, soil organic matter content is increased and physicochemical properties of soil are improved. Through rainfall interception, infiltration, retention and utilization performances of broad bean and Vicia sativa L. plants, the water and soil loss of a nursery is reduced. Compared with the conventional management method, the method reduces chemical nitrogen use amount by 40%, improves nursery incomes, increases soil organic matter content, effectively controls soil loss and nitrogen transferable nutrients and reduces non-point source pollution so that sustainable development of an oriental cherry nursery is realized.

The invention discloses a preparation method and a field using technology of a special all-element compound fertilizer for sugarcane. The preparation method and the field using technology comprise the following steps: (1), preparing a high-yield cultivation nutrient formula for the sugarcane; (2), preparing the special all-element compound fertilizer for the sugarcane; (3), applying the compound fertilizer in a field; and (4), topdressing. The preparation method and the field using technology of the special all-element compound fertilizer for sugarcane are strong in specificity and capable of achieving comprehensive benefits of increasing the yield, saving the fertilizer and saving the labor.

The invention discloses a method for improvement of acidic soil of a wheat field and a wheat cultivation method capable of increasing the yield. The invention aims to solve the technical problems, which are caused by soil acidification, in grain yield and safety. Through supplementary action of multiple technical measures, the pH value of the soil can be improved significantly, and the level of soil fertility can be improved, wherein the technical measures include adoption of a conditioning agent, preparation of reasonable nitrogen fertilizer, phosphate fertilizer and potassium fertilizer which are organic fertilizer and chemical fertilizer, combined application of deep ploughing and deep turning and reasonable selection of fertilizer types; the invention aims to provide the method for improvement of acidic soil of the wheat field and the wheat cultivation method capable of increasing the yield, and the methods need to be suitable for the Henan region, so that the acidic soil of the wheat field is improved, stable production and yield increase of wheat in the region are achieved, and the food security in China is ensured.

The bacteriostatic organic-inorganic composite fertilizer consists of botanical bacteriosatic matter 10-15 weight portions, chicken manure 35-4 5 weight portions, nitrogen fertilizer 5-15 weight portions, phosphate fertilizer 2-8 weight portions, potash fertilizer 4-10 weight portions and additive 1-10 weight portions. It is prepared into granular fertilizer through drying and crushing of the organic material, mixing and fermentation, air drying the fermented matter and compounding, and mechanical pelletizing. The present invention combines fertilizer with pesticide and germicide.

The invention discloses a method for producing aquatic vegetables and a green manure during crop rotation of water mimosa and paddy rice. With the method, paddy rice and water mimosa are planted according to a certain ratio during a double-cropping rice period. Water mimosa can grow together with paddy rice in a paddy environment. Rhizobium of the water mimosa on the part on the surface of the paddy can fix nitrogen, such that soil nitrogen content can be increased. After the harvesting of early-season rice, the edible parts of water mimosa are harvested, and all the non-edible parts are turned back to the field as green manure; after the harvesting of late-season rice, winter cropping of water mimosa is carried out; about 1 month before early-season rice planting in the next year, the edible parts of the winter-cropping water mimosa are harvested, and all the non-edible parts are turned back to the field as green manure. With the paddy rice and water mimosa crop rotation method, soil fertility can be maintained on a basis of increasing paddy rice yield. Also, the use of chemical fertilizer nitrogen can be reduced, such that non-point source pollution caused by paddy rice production can be retarded.

The invention discloses an automatic irrigation type water-retaining and water-cleaning green roof system based on solar energy. The system comprises a solar energy storage and supply assembly, a light green roof, an automatic drip irrigation assembly and a water storage tank; a plastic drainage plate, geotextile, an artificial matrix and sedum lineare are on the light green roof from a building roof; the artificial matrix is formed by mixing perlite and organic chicken manure; the water storage tank is installed in a staircase on the inner top layer of a building body, and used for receivingrainwater drained by the light green roof; an overflow hole is formed in the water storage tank; the solar energy storage and supply assembly comprises a solar panel, a charging controller and a storage battery; the automatic drip irrigation assembly comprises a drip irrigation pipeline, a moisture detector, a water pump and a drip irrigation controller; the drip irrigation controller controls thewater pump to be started and stopped according to the moisture content in the artificial matrix; and the automatic drip irrigation purpose is achieved. By means of the automatic irrigation type water-retaining and water-cleaning green roof system based on solar energy in the invention, the risk of non-point source pollution is reduced while the intercepting rate of the green roof in the rain period is increased; the survival of plants on the green roof in the drought period can be enhanced; and the ecological environment benefit of the green roof is ensured.