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38 results about "Noxious weed" patented technology
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A noxious weed, harmful weed or injurious weed is a weed that has been designated by an agricultural or other governing authority as a plant that is injurious to agricultural or horticultural crops, natural habitats or ecosystems, or humans or livestock. Most noxious weeds have been introduced into an ecosystem by ignorance, mismanagement, or accident. Some noxious weeds are native. Typically they are plants that grow aggressively, multiply quickly without natural controls (native herbivores, soil chemistry, etc.), and display adverse effects through contact or ingestion. Noxious weeds are a large problem in many parts of the world, greatly affecting areas of agriculture, forest management, nature reserves, parks and other open space.
Microorganism and enzyme powder composite biological agent for microbial organic fertilizer
ActiveCN101786911AImprove decomposition effectSpeed up fermentationBio-organic fraction processingClimate change adaptationBiotechnologyNoxious weed
The invention discloses a microorganism and enzyme powder composite biological agent for a microbial organic fertilizer, which consists of 25 percent of various microbial agents, 23 percent of various bio-enzyme preparations, 30 to 35 percent of microbial nutrition agent, 5 percent of mordenite, 8 percent of dolomite, 3 percent of potassium fulvic acid, and the balance of water. The invention provides the microorganism and enzyme composite biological agent for promoting the high-quality and high-yield production of the microbial organic fertilizer, which is formed by compounding purely natural microorganism and enzyme, and integrates the advantages of the microbial agents and the enzyme preparation, and has the biocatalyst and biological degradation function; when used in a compost, the microorganism and enzyme composite biological agent accelerates the degradation speed of organic matters, makes the temperature of the composting materials rise in a short time (24 hours), eliminates the situations such as strong smelling and mosquitoes and flies breeding, and the like caused in the composting process of the biological organic raw materials, reduces the emission of massive pollution gases, and kills the noxious weeds, pathogenic bacteria and ova in the raw materials, and improves the content of organic matters of the composting product; improves the insect resistance capability of crops, and improves the soil degradation problems caused by the fertilizer.
Owner:北京微邦生物工程有限公司
Composite weedicide
InactiveCN101731224AQuick selectionShort half-lifeBiocideAnimal repellantsNoxious weedAdditive ingredient
The invention discloses a composite weedicide. The composite weedicide comprises a mixture of 95 percent fluroxypyr and 97.4 percent carfentrazone serving as effective ingredients; and the range of the weight ratio of the 95 percent fluroxypyr to the 97.4 percent carfentrazone is between 1:99 and 99:1. The invention also discloses a plurality of preparation formulations of the composite weedicide. In the invention, the 95 percent fluroxypyr and the 97.4 percent carfentrazone are compounded and mixed to serve as a wettable powder preparation, which can give play to the comprehensive advantages of the two medicaments. The composite weedicide can not only achieve the effect of weeding rapidly and radically, but also reduce the dosage and facilitate the use of a peasant. The harm of various broad leaf weeds in a paddy field, a wheat field and a corn field can be prevented by using the weedicide once; therefore, the dosage of the weedicide in the paddy field, the wheat field, the corn field and the like can be reduced; and the prevention and removal effects on noxious weeds can be improved.
Owner:LIANBAO CROP TECH
Glyphosate water-based composition
ActiveCN101796964AImprove hard water resistanceSignificant synergyBiocideAnimal repellantsWater basedNoxious weed
The invention relates to a glyphosate water-based composition. The glyphosate water-based composition is characterized in that: the weight percentage of the glyphosate (based on glyphosate acid) in the composition is more than or equal to 20 percent; and the weight percentage of sulfate ions or hydrogen sulfate ions is more than or equal to 20 percent. The glyphosate water-based composition can be processed into an aqueous agent and a suspending agent. The composition has the advantages of promoting plants to adsorb and transmit the glyphosate, enhancing the herbicidal activity of the glyphosate, reducing the using amount of the glyphosate and having special effect of weeding noxious weed such as cogongrass, alligator alternanthera, scandent hop and the like.
Owner:SHENZHEN NOPOSION AGROCHEM
Foliar saline spray solution for selective control of noxious weeds
The invention relates to a foliar saline spray solution for selective control of noxious weeds such as ragweed, poison ivy, dandelion, clover, bedstraw, wild parsley, millet, thistle, English daisy, plantain, ground-ivy, and knotweed. The invention also relates to a method for selective control of noxious weeds. In accordance with a preferred embodiment of the present invention, the solution comprises 8% to 12% weight to volume of a specific salt such as sodium chloride. The solution may further comprise an adjuvant such as a non-ionic surfactant.
Owner:MCGILL UNIV
Method for modifying Tibet plateau alpine meadow grassland into mowing grassland
The invention discloses a method for modifying the Tibet plateau alpine meadow grassland into mowing grassland. The method for modifying the Tibet plateau alpine meadow grassland into the mowing grassland comprises (1) a step of selection of the grassland, (2) a step of flattening of the ground, (3) a step of selection of resowing grass seeds and a mixing ratio, (4) a step of turf cutting and resowing, (5) a step of determination of fertilizer type and fertilizer amount, (6) a step of determination of irrigation method and irrigation amount, (7) a step of management, and (8) a step of mowing and harvest. The method for modifying the Tibet plateau alpine meadow grassland into the mowing grassland has the advantages that comprehensive modification measures can promote the growth of forage grass, especially irrigation and fertilization can promote the nutritional growth of the forage grass and restrain reproductive growth, so that the forage grass is tender in stalk and rich in foliage. Mowing can control the growth of noxious weeds, promotes compensatory growth or over-compensatory growth of fine forage. Through comparison, the height of a grass layer, and the yield and the quality of forage grass are all largely improved.
Owner:GANSU AGRI UNIV
Noxious weed control by soil solarization
InactiveUS6189466B1Promote absorptionIncrease temperatureFertiliser distributersTransplantingNoxious weedSolarisation
A method of controlling noxious weeds, particularly nutsedge (Cyperus spp) by soil solarization, comprising covering the soil with an effective thickness of a transparent, thermoplastic IR retentive film for a sufficient period of time to either kill or suppress the weeds. Also a field management method for the growing of cash crops susceptible to interference by noxious weeds comprising the steps of forming planting beds of soil; subjecting the soil to soil solarization; painting the film to terminate the solarization period; and transplanting cash crop.
Owner:UNITED STATES OF AMERICA AS REPRESENTED BY THE SEC OF AGRI THE +1
Glyphosate weeding composition containing brassinolide compound
ActiveCN106305770ASynergistic effect is obviousReduce usageBiocideDead animal preservationNoxious weedBrassinolide
The invention provides a glyphosate weeding composition containing a brassinolide compound. Effective ingredients of the glyphosate weeding composition include a glyphosate compound and a brassinolide compound. In the glyphosate weeding composition, the glyphosate compound is glyphosate acid or a herbicidal active derivative thereof, and the brassinolide compound is one or more of 24-hybrid epibrassinolide, 24-epibrassinolide, 28-epihomobrassinolide, 28-homobrassinolide and other brassinolide compounds. The mass ratio of glyphosate to brassinolide is 100:(0.01*10<-3>-10*10<-3>). The glyphosate weeding composition containing the brassinolide compound has the advantages that brassinolide and a glyphosate product are compounded, and the uptake and translocation effects of glyphosate in stems and leaves and the growth regulation effect of brassinolide are utilized and combined, so that the weeding composition has obvious synergistic effects, the initial weeding effect time is shortened for 2-4 days, the usage amount of a herbicide is reduced by 20-50%, and control effects on some noxious weeds are better. The weeding composition provided by the invention has the advantages of broad spectrum, high efficiency, low toxicity, little pollution, high effect taking speed, low cost and convenience in application.
Owner:安阳全丰生物科技有限公司
A planting method for shade resist lawn
A planting method of shade-tolerant turf chracterized in that a warm season turfgrass--- Augustinegrass (Stenotaphrum helferi Munroex Hook.f.) with great shade-tolerance and trampling resistance is chosed, and which seeds or seedling is suitable,but seedling is preferabe. The invention has the advantages that: first, Augustinegrass has great shade tolerance and keeps normal growth in the condition that 90% is shaded off; second, in the condition that less than 80% is shaded off, the more are shaded off, the bright greener Augustinegrass grows; third, Augustinegrass is originally planted in hainan and other places in our country and is easy to be planted, to survive, and to be managed, which forms densed turf in a short time; fourth, it is no need to fertilize Augustinegrass which has acid-tolerance and slim-tolerance, besides it is scarcely to have pest and disease damage; fifth, Augustinegrass will not spread around with a little management, so it will not become a poisonous weed.
Owner:SOUTH CHINA BOTANICAL GARDEN CHINESE ACADEMY OF SCI
Eupatorium catarium extract and application thereof
The invention discloses a eupatorium catarium extract and an application thereof and belongs to the technical field of comprehensive development and utilization of weeds. The eupatorium catarium extract is prepared through steps of water boiling and filtration or is prepared through a reflux extraction process with a 70% ethanol water solution. The eupatorium catarium extract is simple in preparation method and can be used as an active pesticide component for prevention and treatment of field weeds and diseases and insect pests. The eupatorium catarium extract has high activity, is harmless to human body, can turn harmful weeds into economic crops, and can help people to remove non-field eupatorium catarium positively, thereby protecting environment.
Owner:HUNAN UNIV OF SCI & ENG
Method for detecting amaranthus palmeri through PCR primers
InactiveCN105400869AStrong specificityQuick checkMicrobiological testing/measurementDNA/RNA fragmentationWeedBiology
The invention relates to a method for detecting amaranthus palmeri in plants and plant products through the PCR technology, and belongs to the field of detection of poisonous and harmful weeds. According to the method, specific primers of amaranthus palmeri are designed, synthesized and used for specific detection of genome DNA of amaranthus palmeri. The molecular detection method for amaranthus palmeri is fast, easy and convenient to implement, high in specificity, accurate and reliable, and the whole detection process can be completed within one workday.
Owner:ANIMAL & PLANT & FOOD INSPECTION CENT OF TIANJIN ENTRY EXIT INSPECTION & QUARANTINE BUREAU
Method for detecting Solanum rostratum Dunal by PCR (Polymerase Chain Reaction) primer
InactiveCN102094086AStrong specificityQuick checkMicrobiological testing/measurementBiologyPlant genes
The invention relates to a method for detecting a Solanum rostratum Dunal in plants and plant products by the PCR (Polymerase Chain Reaction) process, belonging to the field of toxic and harmful weed detection. In the method, two sets of primers are designed and combined and comprise a Solanaceae general primer and a Solanum rostratum Dunal specific primer, wherein the general primer is used for amplifying a Solanaceae plant gene group DNA and monitors the processes for extracting and amplifying the DNA, thereby avoiding false negative for detection; and the specific primer is used for the specific detection of the Solanum rostratum Dunal gene group DNA. The invention builds a modular detection method for the Solanum rostratum Dunal, which is quick, convenient, accurate and reliable and has strong specificity, and the whole detection can be finished within one working day.
Owner:ANIMAL & PLANT & FOOD INSPECTION CENT OF TIANJIN ENTRY EXIT INSPECTION & QUARANTINE BUREAU
Glyphosate weeding composition containing uniconazole
InactiveCN106305769ASynergistic effect is obviousReduce usageBiocideDead animal preservationNoxious weedGlyphosate
The invention provides a glyphosate weeding composition containing uniconazole. Effective ingredients of the glyphosate weeding composition containing uniconazole include a glyphosate compound and uniconazole. In the glyphosate weeding composition, the glyphosate compound is glyphosate acid or a herbicidal active derivative thereof. The mass ratio of glyphosate to uniconazole is 100:(0.1-25). The glyphosate weeding composition containing uniconazole has the advantages that uniconazole and a glyphosate product are compounded, and the uptake and translocation effects of glyphosate in stems and leaves and the growth regulation effect of uniconazole are utilized and combined, so that the weeding composition has obvious synergistic effects, the initial effect time is shortened for 2-5 days, the usage amount of a herbicide is reduced by 20-50%, and control effects on some noxious weeds are better. The weeding composition provided by the invention has the advantages of broad spectrum, high efficiency, low toxicity, little pollution, high effect taking speed, low cost and convenience in application.
Owner:安阳全丰生物科技有限公司
Glyphosate herbicidal composition containing brassinolide compound
ActiveCN106305770BSynergistic effect is obviousReduce usageBiocideDead animal preservationNoxious weedGlyphosate
Owner:安阳全丰生物科技有限公司
Method of treating hyperesthesia, paresthesia, dolor, and pruritus caused by insect stings or noxious weeds or plants using avermectin compound
A method of treating hyperesthesia, paresthesia, dolor, and pruritus caused by an insect or arthropod sting or bite, or a skin contact with a noxious weed or plant is disclosed. The method includes topically applying a dermatological composition containing an avermectin compound to an affected area immediately after said sting or bite, or said skin contact occurs. The method further includes moistening the affected area first prior to application of the dermatological composition.
Owner:GALDERMA SA
Composition for preventing and eliminating malignancy rank grass in cornfield
ActiveCN101313677ACephalonBroad herbicidal spectrumBiocideAnimal repellantsNoxious weedComposition B
The invention discloses a combination used for preventing and removing cornfield noxious weed. The combination is characterized in that: the combination comprises active ingredient composition A and composition B, wherein the composition A is R-2-[4-(5-chloro-3 fluoro-2-oxylpyridine)- phenoxy]-propiolic acid; and the composition B is one of or more than one of 2-[4-methoxyl-6-methyl-1, 3, 5-triazine-2-methyl amido methyl amido sulfonyl] methyl benzoate, thifensulfuron methyl and bensulfuron methyl. The combination provided by the invention has the advantages of wide weed control spectrum, high activity against noxious weed, safety, low toxicity and low residue for crops, safety for following rotation crops, resistance to adverse environments such as low temperature and drought, long working life and convenient use, etc. Meanwhile, the weed control effect of the combination is better than the control effect when the compound A or the compound B is used independently, and the application dose of each active substance is reduced; moreover, the combination is used for just one time and can control the damages caused by various weeds during the entire growing period of wheat, thereby having ideal economic benefit and ecological benefit.
Owner:ANHUI HUAXING CHEM IND CO LTD
Biodegradable Plant Mulch Device
InactiveUS20170354101A1Avoid developmentImprove scalabilityClimate change adaptationPlant protective coveringsNoxious weedWater flow
Owner:PRILL SCOTT
Herbicide
InactiveCN109744247AGood weeding effectImprove weed control effectBiocideAnimal repellantsNoxious weedFluroxypyr
The invention relates to the technical field of pesticides, particularly to a herbicide. The herbicide is composed of, by weight part, 30-40 parts of fluroxypyr, 28-36 parts of carfentrazone, 4-12 parts of synergist, 6-18 parts of diffusant, 2-6 parts of wetting agent and 2-6 parts of safener. The herbicide has the advantages of being good in effects and low in dosage, capable of effectively removing a number of weeds, avoiding environmental pollution and influence on crop growth, effectively increasing the crop yield, and through different weeding mechanism of multiple low-toxicity herbicides, enhancing the weeding effects on noxious weeds with resistance. Meanwhile, the herbicide is reasonable in composition, reduces residues in soil and enhances control effects on target plants.
Owner:丹阳市长富农业技术有限公司
Method for extracting and separating beta-elemene from Eupatorium adenophorum
The invention belongs to the field of plant extraction, and aims to provide a method for extracting and separating beta-elemene from a noxious weed plant Eupatorium adenophorum. The method provided by the invention comprises the following steps: A. raw material preparation: carrying out pulping, or drying and pulverizing on fresh stems and leaves of Eupatorium adenophorum as a raw material; B. volatile oil extraction: acquiring volatile oil from the raw material; C. column chromatography: carrying out column chromatography on the volatile oil acquired in the step B, collecting an eluate, and removing solvent in the eluate to acquire a crude beta-elemene product; and D. refinement: refining the volatile oil acquired in the step B or the crude product acquired in the step C by a molecular distillation or preparation-type high efficiency liquid chromatography system to acquire the high-purity beta-elemene. The invention has the advantages of high product purity, high yield and low cost, and provides a brand-new, cheap and effective way for the development and treatment of Eupatorium adenophorum and the acquisition of beta-elemene.
Owner:靖江市华泰机械制造有限公司
Method for modifying Tibet plateau alpine meadow grassland into mowing grassland
The invention discloses a method for modifying the Tibet plateau alpine meadow grassland into mowing grassland. The method for modifying the Tibet plateau alpine meadow grassland into the mowing grassland comprises (1) a step of selection of the grassland, (2) a step of flattening of the ground, (3) a step of selection of resowing grass seeds and a mixing ratio, (4) a step of turf cutting and resowing, (5) a step of determination of fertilizer type and fertilizer amount, (6) a step of determination of irrigation method and irrigation amount, (7) a step of management, and (8) a step of mowing and harvest. The method for modifying the Tibet plateau alpine meadow grassland into the mowing grassland has the advantages that comprehensive modification measures can promote the growth of forage grass, especially irrigation and fertilization can promote the nutritional growth of the forage grass and restrain reproductive growth, so that the forage grass is tender in stalk and rich in foliage. Mowing can control the growth of noxious weeds, promotes compensatory growth or over-compensatory growth of fine forage. Through comparison, the height of a grass layer, and the yield and the quality of forage grass are all largely improved.
Owner:GANSU AGRI UNIV
Enzymatic enhanced root uptake of agrochemically active compounds
The present invention relates to a method for protecting plants or plant protection material against attack or infestation by insects, fungi, arachnids, nematodes and harmful weeds by treating roots / buds / seeds / soil with active compounds in combination with enzymes.
Owner:BASF AG
A method for identifying barnyardgrass in paddy fields using hyperspectral imaging technology
ActiveCN109765190BFast and lossless acquisitionReduce calculation accuracyColor/spectral properties measurementsNoxious weedImage calibration
The invention discloses a method for identifying barnyard grass of a rice field by utilizing a hyperspectral imaging technology, and belongs to the technical field of identification and early warningof noxious weeds in rice fields. The method comprises the steps of planting germplasm resources of rice and barnyard grass; selecting the rice and the barnyard grass, and acquiring spectral data through a hyperspectral imaging system; taking the spectral data as a model input variable, performing image calibration and image processing through computer software to obtain the average reflectivity ofthe whole leaf, and after signal denoising, selecting a special spectrum to build a discrimination model; and carrying hyperspectral imaging equipment by an unmanned aerial vehicle to collect spectral data of a large-area rice zone, and finally calculating the occurrence rate of the barnyard grass to evaluate the harm degree. The barnyard grass of the rice field is identified by adopting the hyperspectral imaging technology; by utilizing a difference characteristic of the rice and the barnyard grass, the barnyard grass and the rice are distinguished; six main wave spectral characteristics arescreened, so that the calculation is reduced and the accuracy is up to 98.1%; and an unmanned aerial vehicle carrying technology can be used for carrying out high-altitude operation, so that a spectral data result can be rapidly and non-destructively acquired in a large-area manner.
Owner:CHINA NAT RICE RES INST +1
A method for detecting Palmer amaranth by using pcr primers
InactiveCN105400869BQuick checkFast detection methodMicrobiological testing/measurementDNA/RNA fragmentationBiotechnologyNoxious weed
The invention relates to a method for detecting amaranthus palmeri in plants and plant products through the PCR technology, and belongs to the field of detection of poisonous and harmful weeds. According to the method, specific primers of amaranthus palmeri are designed, synthesized and used for specific detection of genome DNA of amaranthus palmeri. The molecular detection method for amaranthus palmeri is fast, easy and convenient to implement, high in specificity, accurate and reliable, and the whole detection process can be completed within one workday.
Owner:ANIMAL & PLANT & FOOD INSPECTION CENT OF TIANJIN ENTRY EXIT INSPECTION & QUARANTINE BUREAU
Herbicidal composition for controlling harmful weeds in areas where corn is grown and use thereof
The invention relates to a weeding composition used for controlling harmful weeds in corn growth areas, and an application. The weeding composition contains a safety agent A and an active component Bof effective weeding quantity as effective components; the safety agent A is a phenyl substituted oxazole isoxazole formamide compound which is shown as the following formula; and the weight ratio ofcomponent A to B containing effective quantities is 1-4 : 1-5. The application of the weeding composition used for controlling harmful weeds in corn growth areas is also provided. The composition caneffectively control most of weeds in corn fields, and basically has no damage to crops, so that secondary phytotoxicity cannot be brought, and the contained safety agent can effectively avoid phytotoxicity of a halosulfuron-methyl herbicide on corns. Compared with herbicide single doses, the weeding composition enlarges weed controlling spectrums, so that the phytotoxicity problems caused by the halosulfuron-methyl herbicide can be avoided, the occurrence of weed resistance can be delayed, and safety for the corns can be realized.
Owner:NORTHEAST AGRICULTURAL UNIVERSITY
Weed killer for preventing and killing weeds in wheat field
InactiveCN103749455AEnsuring a bountiful harvestAdd new varietiesBiocideAnimal repellantsNoxious weedDigitaria sanguinalis
The invention discloses a weed killer for preventing and killing weeds in a wheat field. The weed killer consists of 3,7-dichloroquinoline-8-carboxylic acid or salt of the 3,7-dichloroquinoline-8-carboxylic acid, which serves as an active ingredient, and a pesticide aid, wherein the mass content of the active ingredient is 1-95 percent. The weed killer for preventing and killing the weeds in the wheat field particularly has a remarkable effect of preventing and killing barnyard grass in the wheat field, and can be used for preventing and killing noxious weeds such as digitaria sanguinalis, eclipta prostrate and setaria viridis.
Owner:JIANGSU TIANRONG GROUP +1
Microorganism and enzyme powder composite biological agent for microbial organic fertilizer
ActiveCN101786911BImprove decomposition effectSpeed up fermentationBio-organic fraction processingClimate change adaptationNoxious weedBiotechnology
The invention discloses a microorganism and enzyme powder composite biological agent for a microbial organic fertilizer, which consists of 25 percent of various microbial agents, 23 percent of various bio-enzyme preparations, 30 to 35 percent of microbial nutrition agent, 5 percent of mordenite, 8 percent of dolomite, 3 percent of potassium fulvic acid, and the balance of water. The invention provides the microorganism and enzyme composite biological agent for promoting the high-quality and high-yield production of the microbial organic fertilizer, which is formed by compounding purely natural microorganism and enzyme, and integrates the advantages of the microbial agents and the enzyme preparation, and has the biocatalyst and biological degradation function; when used in a compost, the microorganism and enzyme composite biological agent accelerates the degradation speed of organic matters, makes the temperature of the composting materials rise in a short time (24 hours), eliminates the situations such as strong smelling and mosquitoes and flies breeding, and the like caused in the composting process of the biological organic raw materials, reduces the emission of massive pollution gases, and kills the noxious weeds, pathogenic bacteria and ova in the raw materials, and improves the content of organic matters of the composting product; improves the insect resistance capabilityof crops, and improves the soil degradation problems caused by the fertilizer.
Owner:北京微邦生物工程有限公司
Pyridine biphenyl compound containing isoxazoline as well as preparation method and application of pyridine biphenyl compound
ActiveCN114644622AGood control effectHigh activityBiocideOrganic chemistryNoxious weedCombinatorial chemistry
The invention belongs to the technical field of herbicides, and particularly relates to an isoxazoline pyridine biphenyl compound as well as a preparation method and application thereof. The invention specifically provides a compound shown in the following formula (I) or a salt thereof. The compound shown in the formula (I) shows good activity on various harmful weeds in agriculture or other fields. Moreover, the compounds can obtain a very good prevention and treatment effect at a very low dosage, so that the compounds can be used for preparing herbicides and have a relatively good application prospect.
Owner:SHANDONG UNITED PESTICIDE IND CO LTD
Composition for preventing and eliminating malignancy rank grass in cornfield
ActiveCN101313677BCephalonBroad herbicidal spectrumBiocideAnimal repellantsNoxious weedComposition B
The invention discloses a combination used for preventing and removing cornfield noxious weed. The combination is characterized in that: the combination comprises active ingredient composition A and composition B, wherein the composition A is R-2-[4-(5-chloro-3 fluoro-2-oxylpyridine)- phenoxy]-propiolic acid; and the composition B is one of or more than one of 2-[4-methoxyl-6-methyl-1, 3, 5-triazine-2-methyl amido methyl amido sulfonyl] methyl benzoate, thifensulfuron methyl and bensulfuron methyl. The combination provided by the invention has the advantages of wide weed control spectrum, high activity against noxious weed, safety, low toxicity and low residue for crops, safety for following rotation crops, resistance to adverse environments such as low temperature and drought, long working life and convenient use, etc. Meanwhile, the weed control effect of the combination is better than the control effect when the compound A or the compound B is used independently, and the application dose of each active substance is reduced; moreover, the combination is used for just one time and can control the damages caused by various weeds during the entire growing period of wheat, thereby having ideal economic benefit and ecological benefit.
Owner:ANHUI HUAXING CHEM IND CO LTD
Method for identifying barnyard grass of rice field by utilizing a hyperspectral imaging technology
ActiveCN109765190AFast and lossless acquisitionReduce calculation accuracyColor/spectral properties measurementsNoxious weedImage calibration
The invention discloses a method for identifying barnyard grass of a rice field by utilizing a hyperspectral imaging technology, and belongs to the technical field of identification and early warningof noxious weeds in rice fields. The method comprises the steps of planting germplasm resources of rice and barnyard grass; selecting the rice and the barnyard grass, and acquiring spectral data through a hyperspectral imaging system; taking the spectral data as a model input variable, performing image calibration and image processing through computer software to obtain the average reflectivity ofthe whole leaf, and after signal denoising, selecting a special spectrum to build a discrimination model; and carrying hyperspectral imaging equipment by an unmanned aerial vehicle to collect spectral data of a large-area rice zone, and finally calculating the occurrence rate of the barnyard grass to evaluate the harm degree. The barnyard grass of the rice field is identified by adopting the hyperspectral imaging technology; by utilizing a difference characteristic of the rice and the barnyard grass, the barnyard grass and the rice are distinguished; six main wave spectral characteristics arescreened, so that the calculation is reduced and the accuracy is up to 98.1%; and an unmanned aerial vehicle carrying technology can be used for carrying out high-altitude operation, so that a spectral data result can be rapidly and non-destructively acquired in a large-area manner.
Owner:CHINA NAT RICE RES INST +1
Composite herbicide and preparation method thereof
ActiveCN102334486BLess likely to develop drug resistanceGood prevention effectBiocideAnimal repellantsNoxious weedSolvent
The invention discloses a composite herbicide, which comprises the following components in percentage by mass: 5 to 60 percent of oxadiazon, 3 to 50 percent of oxyfluorfen, 5 to 70 percent of butachlor, 1 to 20 percent of auxiliaries, and 5 to 80 percent of solvent or carrier. A preparation method of the composite herbicide comprises the following steps: putting the oxadiazon and the oxyfluorfen technical into a preparation kettle; adding the solvent to dissolve the oxadiazon and the oxyfluorfen technical while stirring; sequentially adding the butachlor, the auxiliaries and the solvent; and uniformly stirring to obtain an emulsifiable solution product. The composite herbicide has the advantages that: the oxadiazon, the oxyfluorfen and the butachlor belong to different types of herbicideswith different functions and characteristics, prevent weeds from generating drug resistance after compounded, have complementary advantages to enlarge the range of weed control, in particular to noxious weeds difficult to control insects, and can postpone and control the drug resistance of weeds and succession of weed community in the field; and the herbicide composition has good safety to plantsand afterreap crops.
Owner:SHANDONG VICOME GREENLAND CHEMICAL CO LTD
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