422results about How to "High suspension rate" patented technology

The invention provides a pesticide suspension concentrate containing pleocidin and a preparation method thereof. The suspension concentrate comprises active ingredients such as pleocidin and abamectin, emamectin benzoate, lambda-cyhalothrin, beta-cypermethrin, chlorfenapyr, chlorfluazuron, diafenthiuron, lufenuron, thiamethoxam or butene-fipronil, as well as dispersing agent, wetting agent, functional aids, other aids and water. The preparation method is as follows: mixing the active ingredients, aids and water to a homogeneous pasty material, and then feeding into a sand mill to obtain a mean grain size of 2-4mu m (4.3) by the sand milling. The suspension concentrate of the invention has a small mean grain size, high suspension rate of the product, stable performance and minimal condensate rate under storage at room temperature within two years. Furthermore, as the suspension rate of the preparation is high and the added functional aids increase spreadability and permeability, the pharmacodynamic action of the product is improved.

The invention relates to a sintering-strippable low-cost red water-based cast iron coating, which is prepared by the following raw materials in percent by mass: 20-45 percent of bauxite powder or powder quartz, 0-25 percent of mullite powder, 1-6 percent of talcum powder, 1-5 percent of iron trioxide powder, 1-3 percent of suspending agent, 1.5-4.5 percent of organic binding agent, 1.5-6 percent of inorganic binding agent, 0.01-0.05 percent of wetting agent, 0.02-0.05 percent of preservative, 0.02-0.1 percent of defoaming agent, 0-0.5 percent of water reducing agent and 30-42 percent of tap water. The sintering-strippable low-cost red water-based cast iron coating has the characteristics that the raw materials are cheap and the source is wide; the product is low-cost, safe, environmental-friendly and convenient to transport; the brushing property, the flowing resistance and the leveling property of the product are good, the suspension percentage, the coating strength and the crack resistance are high and the gas evolution is low; and the sintering-stripping performance is excellent, the most part of the coating can be vastly stripped after castings are taken out of a casting box and are cooled, the defects of sand sticking, sand inclusion, sand drop, voids and the like existing the castings can be effectively avoided, and the castings with excellent surface quality can be obtained.

The invention discloses a pymetrozine-containing suspension agent composition which comprises pymetrozine and an effective ingredient B, wherein the effective ingredient B is any one of isoprocarb, nitenpyram, imidacloprid, avermectin, buprofezin, thiacloprid and acetamiprid. The composition consists of pesticide active ingredient, a wetting agent, a dispersing agent, an antifreeze agent, a defoaming agent, a thickening agent and water, wherein the dispersing agent is one or more of modified calcium lignosulphonate, alkyl naphthalene sulfonic acid condensate Morwet D-425, polycarboxylate Tersperse 2500, sodium poly (naphthaleneformaldehyde) sulfonate and sodium methylene bis-naphthalene sulfonate. The composition has the advantages of thinner particle size, higher suspension rate, better dispersibility, more stable heat storage property, better effect and the like.

The invention discloses a Bacillus thuringiensis MB-15 strain which has a broad spectrum and high virulence on vegetable lepidoptera pests, and the preservation number of the strain is CGMCC No. 5255. The strain can form a diamond insecticidal crystal protein, contains cry1I, cry1Ac, cry2Ac and vip3Aa genes, and has high-efficiency insecticidal activity on plutella xylostella, Pieris brassicae, beet armyworm, Spodoptera litura, Helicoverpa armigera and other lepidoptera pests. The invention also relates to a preparation method of the wettable powder of strain. The wettable powder comprises the following content of main components: 40.0-50.0% of Bacillus thuringiensis MB-15 strain powder, 5.0-10.0% of a dispersant, 5.0-10.0% of a wetting agent, 0.5-1.0% of a stabilizer, 0.5-1.0% of an ultraviolet light protection agent, and 28.0-49.0% of a carrier. The wettable powder can be used to control a plurality of lepidoptera pests on vegetables, and has the characteristics of broad spectrum, high efficiency, and safety, etc.

The invention discloses an concave-convex bar suspending agent, and the key points of its technical solution: uniformly blending sodium modified concave-convex bar clay, sodium silicate, sodium dodecyl sulfate and polyacrylamide, then inputting the uniform mixture into a grinding machine to grinding into powder with grain size <=0.044 mm, and finally packaging into finished products. And it has characters of simple producing process, low cost, high suspending ratio, good diffusing stability, and excellent performances in the aspects of anti-freezing function, rheological property, film forming characteristic and adhesive property. And it is applied to make various pesticide suspending agents.

The invention belongs to the field of insecticide, and discloses a cycloxaprid water dispersible granule, and a preparation method thereof. The water dispersible granule comprises an effective component of cycloxaprid. The preparation method comprises: adding a moistening agent, a dispersing agent, an adsorbent, a disintegrating agent, a binder, a stabilizing agent and a carrier to the cycloxaprid; uniformly mixing the mixture; carrying out air jet pulverization to prepare a wettable powder; carrying out kneading, pelletizing, drying and screening to obtain products. The cycloxaprid water dispersible granule provided by the present invention is one of agricultural formulations of the cycloxaprid, and has advantages of quick disintegrating, good dispersibility, high suspending rate, good stability, easy storing, convenient using and no requirement of solvent. In addition, with the present invention, active ingredients are protected such that the active ingredients can play a role.

The present invention discloses one kind of botanical pesticide fertilizer suspending agent. The technological scheme is that modified attapulgite, tobacco leftover, red chili, chinaberry tree leaf, yellow Indian azalea, sessile stemona root, garlic, fennel, pricklyash, urea, potassium dihydrogen phosphate, sodium silicate and sodium dodecylsulfate are mixed via stirring, and the mixture is milled in a mill and packed into the botanical pesticide fertilizer suspending agent. The botanical pesticide fertilizer suspending agent has rich material, simple production process, low cost, easy use, lasting pesticidal and fertilizer effect, no environmental pollution, no resistance, no harm to natural enemy of pests and no harm to human body and farm animal. It may be used as both pesticide for preventing and controlling decades of pests of vegetable, fruit and grain crops and foliage fertilizer.

The invention discloses a phosphate inorganic casting binder suspension curing agent and a preparation method thereof. The preparation method comprises the following steps of: adding organic resin to an alcoholic solvent; stirring to be fully dissolved and adding organic acid; stirring to be fully dissolved and then adding powder magnesia; and evenly stirring and dispersing to prepare the suspension curing agent. The invention also discloses the application of the curing agent to the foundry industry. The preparation method of the phosphate inorganic casting binder suspension curing agent is simple and adopts easily obtained raw materials with lower cost. The curing agent has the excellent performances of high efficiency, suspension rate and solid content, free toxicity, moderate reaction speed with the binder, and the like; a casting sand mould bonded by utilizing the curing of the curing agent and the organic binder has high sintering strength and stable sintering performance without a dust flying phenomenon in a sand-mixing process or generating dust pollution and is easy to popularize and apply in the foundry industry.

The invention discloses an agricultural bactericide, namely a fluazinam dry suspending agent and a preparation method thereof. The composition provided by the invention comprises fluazinam, a penetrating agent, a dispersing agent, a wetting agent, a disintegrating agent, a binder, a filler and water. The preparation method of the fluazinam dry suspending agent technically adopts multiple grindingso that the particle size of the dry suspending agent is controlled below 5 mu m and the suspensibility is more than 90%. The fluazinam dry suspending agent and the preparation method provided by theinvention have the characteristics of high drug effect, strong penetration capability and the like, can reduce the dosage, lower the using cost of farmers, reduce environmental pollution and resist rainwash, and well solves the problem that fluazinam is difficult to penetrate into the plants, thereby greatly improving the prevention and control effect on the crop diseases.

The invention relates to a low-temperature resistance cotton seed coating agent, which is composed of a bactericide, a plant-growth regulator, a film forming agent, an antifoaming agent and an warning color, and is characterized in that the cotton seed coating agent comprises the following components by mass percentage: 4.0%-4.2% of Seedvax, 4.0%-4.2% of thiram, 0.002%-0.01% of naphthyl acetic acid, 0.002%-0.01% of gibberellin, 0.2%-0.5% of polyvinyl alcohol, 0.3%-0.5% of carboxymethylcellulose sodium, 0.4%-0.5% of antifoaming agent, 1.5%-2.0% of warning color and the balance of water. The low-temperature resistance cotton seed coating agent has the effects of resisting low temperature, preventing disease in seedling stage, promoting the seed germination and rooting and promoting the seedling growth, and also has the advantages of high suspension rate, good film forming ability, even dressing, low shedding rate, low toxicity and convenient usage.

The invention discloses a coating for water-based magnesia casting and a preparation method thereof. The coating comprises effective components of, by mass, 60%-75% of fire-resistant powder materials, 1%-8% of binders, 1%-6% of suspending agents, 20%-30% of carrier liquid and 0.05%-0.2% of surfactants, and ccccccccccccsthe total content of the components is 100%. The method includes feeding weighed fire-resistant powder materials and the binders into an edge runner mill for grinding, then feeding the suspending agents, the carrier liquid and the surfactants into the edge runner mill sequentially for grinding, and finally taking out the coating from the edge runner mill after passing through a colloid mill so as to obtain the coating for the water-based magnesia casting. According to the coating and the method, magnesia and the like are taken as the fire-resistant materials, alcohol is taken as a solvent, and the coating is prepared into a powder or paste shape. The coating is high in suspensibility, good in painting, high in surface finishment, not easy to precipitate or caking and good in liquidity and stability.

The invention discloses alcohol-based casting coating for precoated sand moulds and a method for preparing the alcohol-based casting coating, and belongs to the field of coating. The alcohol-based casting coating comprises, by weight, 63-67% of refractory powder with the size of 400-600 meshes, 1.0-1.4% of sodium bentonite, 1.6-2.3% of calcium bentonite, 1.2-1.8% of thermosetting phenolic resin, 0.6-0.9% of polyvinyl butyral and 28-31% of ethanol. The method includes proportionally mixing raw materials, except for the ethanol, with one another to obtain mixtures, adding the mixtures into a mixing mill, adding the ethanol with the mass accounting for 45-55% of the total mass of the ethanol into the mixing mill, and sufficiently mixing the mixtures and the ethanol to obtain paste coating; taking the paste coating out of the mixing mill, placing the paste coating in a stirring barrel, adding the remaining ethanol into the stirring barrel and uniformly stirring the paste coating and the remaining ethanol to obtain the finished alcohol-based casting coating. The method has the advantages that the alcohol-based casting coating is high in suspensibility and solid content, low in drying deformation, extremely high in covering power and excellent in brushing feeling and leveling property, coatings are smooth and clean and are good in breathability, and the surfaces of poured castings are smooth and clean.

The invention discloses a synergistic carrier composition for solid pesticide preparations. The composition is composed of 1-30mass% of polyaspartic acid and 70-99mass% of illite / smectite clay. The synergistic carrier composition has the advantages of reduction of the consumption of a pesticide assistant, cost saving, suspension rate increase, drug effect enhancement, obvious quality improvement and obvious cost reduction when 3.5-55mass% of the composition is used in solid pesticide preparations comprising a wettable pulvis, a water dispersible granule and the like as a carrier.

The invention relates to the field of pesticide preparations, and provides a special suspension agent for flight plant protection. The special suspension agent includes, by mass percentage, 30-75% ofpesticide active ingredient, 1-10% of sodium bacillus subtilis, 5-20% of wetting agent dispersing agent, 1-10% of anti-evaporation agent, 1-5% of anti-drift agent, 1-3% of viscosity modifier and the water for supplementing to 100%. The special suspension agent for flight plant protection has good dispersion stability, spreadability, anti-drift and anti-evaporation performance.

The invention discloses a long-acting slow-release seed coating for preventing and curing corn diseases and insect pests, comprising an insecticide and bactericide, a growth regulator, a film-forming agent and a suspension agent, which is characterized by comprising the following components based on a weight ratio: 5.0-11.0% of amicarthiazol, 5.0-12.0% of thiram, 6.0-12.0% of chlorpyrifos, 10-20%of humic acid, 6-12% of xanthan gum, 6-15% of bentonite, 1.0-6.0% of antifoaming agent, 6-12% of aposematic colouration and the balance water. The seed coating can be prepared by the following steps:adding the humic acid, the xanthan gum and the bentonite in the water for dissolving, then adding the amicarthiazol, the thiram, the chlorpyrifos, the antifoaming agent and the aposematic colouration, stirring at a high speed, and obtaining the finished product after coarse grinding and fine grinding. The finished product has the characteristics of good film formation, even coating, low toxicity,environment protection and low cost. Under the unique soil and weather conditions in Xinjiang, the field germination rate for corn seeds can be improved by about 10% and the effect for preventing andcuring the diseases and the insect pests reaches above 85%.

The invention provides a lactobacillus preservative capable of increasing the survival rate of liquid lactobacilli at the room temperature and an application of the lactobacillus preservative. With adoption of a lactobacillus body and nutrient suspension technology and a sustained release technology as well as addition of cream, linoleic acid, lecithin, glycerol monostearate and a stabilizer to a medium and regulation of pH value, the storage period of the liquid lactobacilli with high live bacteria quantity is prolonged, the problem of rapid reduction of liquid lactobacilli with high live bacteria quantity due to reduction of the content of nutrients and storage at the normal temperature is solved, and the lactobacilli really play a role in preventing and treating diarrhea and regulating balance of the intestinal flora during use; the lactobacillus preservative as a green, safe and effective microecological agent is applied and popularized.

The invention discloses an alcohol-base foundry coating for a green sand mold and a preparation method of the alcohol-base foundry coating. The coating comprises components in percentage by weight as follows: 44%-55% of 400-600-mesh refractory powder, 1.30%-1.45% of sodium bentonite, 0.45%-0.60% of water, 0.5%-0.7% of polyvinyl butyral, 1.4%-1.6% of thermoplastic phenolic resin and 41%-52% of ethanol. The preparation method comprises steps as follows: 1), raw materials are weighed in proportion; 2), sodium bentonite and water are ground and preprocessed to form paste; 3), the 400-600-mesh refractory powder, the thermoplastic phenolic resin and the polyvinyl butyral are mixed with the paste obtained in the step 2), the ethanol accounting for 25% of total weight of ethanol is added for mixing grinding, and a pasty coating is obtained; 4), the remained ethanol is added and stirred to obtain the coating. The alcohol-base foundry coating has high suspension rate and high permeability, the surface strength of the sand mold can be enhanced, the coating breathability is good and avoids cracking and peeling, and casting is not stuck with sand.

The invention discloses a preparation method of an yttrium oxide moulding shell used for titanium alloy precision casting. A moulding shell surface layer coating comprises yttrium oxide refractory powder, ammonium zirconium carbonate binder, a wetting agent and a defoaming agent. The preparation method includes the steps of preparation of the surface layer coating, preparation of a back layer coating, preparation of the moulding shell, dewaxing, calcinations and the like. By means of the yttrium oxide moulding shell used for titanium alloy precision casting and the preparation method thereof, the problems that an existing moulding shell is prone to redissolution under the influence of water in the preparation and dewaxing processes, and steam dewaxing cannot be achieved are solved. The binder used for the coating is made of ammonium zirconium carbonate and is low in price, and the prepared coating is stable and reliable and cannot generate redissolution after being dried under the influence of water. The prepared surface layer coating is good in smearing performance and high in refractoriness, steam dewaxing is adopted, no pollution is caused to the environment, and the prepared surface layer moulding shell has no influence on the human health. The prepared yttrium oxide moulding shell is wide in application range, an interface reaction layer is small, titanium alloy casts are high in precision, performance is excellent, and later-period finishing is conducted easily.

The invention discloses a high-molecular-weight lignin pesticide dispersant with high carboxyl group content and a preparing method thereof. The preparing method includes the steps that after lignin and catechol are mixed evenly, concentrated sulfuric acid is added, and after reactions, the product is cooled to the room temperature, purified and dried to obtain phenolated lignin; the phenolated lignin and alkenyl succinic anhydride are placed in a reactor, and organic solvent and a sodium hydroxide solid are added and stirred; the temperature is raised to 80 DEG C-95 DEG C to conduct reactions, and carboxylation lignin is obtained after filtering, washing and drying; the carboxylation lignin is added into water to form a water solution under the stirring condition, the pH value is adjusted to 10-12, epoxy chloropropane is added to conduct a polycondensation reaction, and the pH value of a reaction solution is adjusted to 6-7 to obtain the lignin pesticide dispersant. The weight-average molecular weight of the obtained dispersant is larger than 15000, and the carboxyl group content is 3.2-4.0 mmol / g. The high-molecular-weight lignin pesticide dispersant is suitable for various kinds of pesticide wettable powder and water dispersible granules and has excellent dispersibility, stability, wettability and heat storing performance.

The present invention relates to a phenoxy bacterioester water dispersing granules preparation and a phenoxy bacterioester water suspension agent, the former is a granules preparation obtained by mixing phenoxy bacterioester with adjuvant and pilling material together, and can be quickly disintegrated in water, dispersed and formed into high suspended and stable dispersion system, and the latter is a high-dispersity and stable liquid preparation using water as medium and obtained by mixing phenoxy bacterioester together with adjuvant and water. As compared with wettable powder preparation said two preparations are large in density, small in volume, have good dispersity and high suspension rate, and can raise control effect.

The invention discloses a block polymeric dispersant and a preparation method and application thereof. The structural formula of the block polymeric dispersant is as defined in the specification. The preparation method comprises the following steps: using trithio ester with symmetrical structure as a RAFT reagent, using azo or peroxide as an initiator, through the copolymerization of unsaturation hydropathy monomer, preparing a polymeric surfactant of ABA-type structure with controllable structure and narrow molecular weight distribution. The application is as follows: the block polymeric dispersant is applied to a pesticide dry flowable. In the preparing process of the dry flowable, the polymeric dispersant has the dispersing and stabilizing functions. Under the relative action of ion pair, Lewis acid-base and hydrophobic group, a wetting agent is continuously replaced by the polymeric dispersant in the grinding process and the polymeric dispersant is firmly adsorbed to the particle surface, and amphipathy particles covered by the surfactant are stably suspended and dispersed in the water for a long time under the action of steric hindrance, solvatable chain and electrostatic repulsion, so the suspension percentage and physical stability of the dry flowable can be effectively improved.

The invention provides niclosamide ethanolamine salt wettable powder as well as a preparation method and application thereof. The wettable powder is prepared from niclosamide ethanolamine salt, a dispersing and wetting agent, a suspension aid and an anti-caking agent, wherein the dispersing and wetting agent is a compound mixture of fatty alcohol-polyoxyethylene ether and a non-ionic hydroxyl polyethylene oxide block copolymer, and the use amount of the dispersing and wetting agent accounts for 8-15% of the total weight of the raw materials. By using the compound mixture of the fatty alcohol-polyoxyethylene ether and the non-ionic hydroxyl polyethylene oxide block copolymer as the dispersing and wetting agent, a unique steric hindrance effect is provided in the system, so that the stability of the system is effectively kept and the problems of slow wetting, color change and flocculation are solved; the wettable powder is short in wetting time, uniform in dispersion effect, relatively small in particle size distribution, capable of rapidly reaching a target site, free from flocculation for a long time and free from particle aggregation, so that the wettable powder has long-lasting efficacy and applicable to hard water. The wettable powder disclosed by the invention is applicable to the preparation of molluscicidal products and is good in molluscicidal effect.

The invention relates to a preparation method of a pesticide effervescent tablet, comprising the following steps of: (1) with one or the combination of more of bentonite, diatomite, white carbon black, maize starch, white clay, kaolin, superfine silica gel powder and aluminum-magnesium silicate as a carrier, mixing the mixture with pesticide raw materials, freezing at -10DEG C and crushing to obtain the nano carrier pesticide; (2) premixing the nano carrier pesticide with the dried acid source substances, a carbon dioxide source, a caking agent, a wetting dispersant, a disintegrating agent and a lubricating agent, roughly crushing and mixing, crushing by a jet pulverizer and then adding the crushed materials in a conical mixer blender and mixing to allow the materials to completely pass through a standard sieve with over 300 meshes to obtain dry powder; and (3) pressing the dry powder into a tablet with the preset size by using a tablet compression machine in the environment that the temperature is 15-25DEG C and the humidity is below 40 percent, i.e. obtaining the pesticide effervescent tablet. The method is simple, low in cost and environmentally-friendly; and the pesticide effect and the utilization rate of the pesticide of the pesticide effervescent tablet are superior to those of the conventional aqueous emulsion.

The invention relates to bactericide water dispersible granules compounded from difenoconazole and pyraclostrobin and a preparation method thereof, belonging to the technical field of pesticides. The bactericide water dispersible granules are prepared from the following components in percentages by weight: 5-50% of difenoconazole, 5-30% of pyraclostrobin, 1-8% of dispersing agent, 1-4% of wetting agent, 1-15% of disintegrating agent, 1-3% of binder and the balance of carrier. The bactericide water dispersible granules have the advantages of favorable dispersibility, favorable wettability, high suspension rate, high disintegrating speed, easiness for packaging and storage, no dust pollution in the production process and the like, and have a further expanded bactericidal spectrum.

The present invention relates to water dispersed particle agent of abamectin as miticidal and pesticidal active component and its preparation process. This kind of water dispersed particle agent has three-layer structure, including water soluble carrier of chemical fertilizer, such as urea, KCl and ammonium dihydrogen phosphate, or saccharide, such as cane sugar; the second layer of coating formed through painting abamectin dissolved in co-solvent plus emulsifier; and the third layer of coating of mixed coating agent comprising dextrin, soluble starch, dodecyl benzene sulfate, etc. The present invention has the pesticidal activity of abamectin and the function of foliage fertilizer, contains no organic solvent, and is environment friendly and easy to transport and storing.

The invention discloses a snail control insecticide of compound niclosamide ethanolamine salt suspending agent which comprises the constituents (by weight portion) of niclosamide ethanolamine salt 1-50 parts, methaldehyde 0.01-5 parts, dispersing agent 1-20 parts, wetting agent 0.5-20 parts, and thickening agent 0.05-10 parts, and balancing water. The invention also discloses the process for preparing the suspending agent.

The invention relates to a wettable powder compounded by dimethomorph and polyoxin and a preparation method thereof. The wettable powder is compounded by the following components: 10-50% of dimethomorph and 2-10% of polyoxin (preferably 20-30% of dimethomorph and 2-5% of polyoxin), a dispersing agent, a wetting agent, an adjuvant and a carrier. The two effective ingredients can produce synergistic effect, thus effectively reducing the single dose, enlarging the bactericidal spectrum, lowering the chemical injury, obviously improving the control effect on germs, relieving the drug resistance problem of pathogenic bacteria and lowering the control cost; and the effective ingredients have good control effect on downy mildew, epidemic diseases, leaf spot, gray mold and the like of a pluralityof crops such as fruit trees, vegetables, field crops and the like; and the obtained wettable powder has good environmental compatibility and good popularization prospect.

The invention discloses a preparation method and application of a suspension type material of starch modified nanoscale zero-valent iron, and belongs to the field of nanometer materials and water environment pollution repair. Surface modification is carried out on nanoscale zero-valent iron particles with small particle diameter and high activity, low-cost environment-friendly sodium carboxymethyl starch is used as a dispersing agent, and the nanoscale zero-valent iron is stably dispersed on the condition of maintaining the activity of nanoscale iron. The process is easy, convenient and easy to operate, the cost is low, the good dispersing effect can be achieved, the agglomeration phenomenon of the nanosale iron in water can be effectively reduced, migration of modified nanoscale iron is promoted, and the removal efficiency of the particles for organic pollutant is improved.

The invention provides a pesticide composition containing pendimethalin, and the pesticide composition provided by the invention comprises the following components in parts by weight: 0.1-50 parts of pendimethalin raw material, 2-10 parts of wetting dispersing agent, 1-3 parts of special assistant agent, 1-3 parts of glue stabilizing agent and 0.1-100 parts of water. The invention also provides apreparation method for the pesticide composition, and the method comprises the following steps: dissolving the wetting dispersing agent, the special assistant agent and the glue stabilizing agent in water; mixing the acquired solution with the pendimethalin raw material; and wet-grinding the mixture into a suspension solution with an average grain size of 1-10 microns. The pesticide composition has the advantages that the property of the pendimethalin suspension is excellent, the dispersibility is excellent, the suspension efficiency is high, the preparation is free from the phenomena such aslayering, crystallizing, creaming, and the like, the preparation acts at a target position in a solid particl mode, the effective constituents are difficult to volatilize, and the pesticide effect isdurable.

The invention discloses a difenoconazole water dispersible granule and a preparation technique thereof. The difenoconazole water dispersible granule is prepared by mixing the raw materials including 95% of difenoconazole, colophony graft polymer dispersant or acrylic polymer dispersant, naphthalene sulfonate, alpha-alkene sulfonate, ammonium sulphate, kaoline and white carbon black according to the proportion, and then the raw materials are ground in a dry way, granulated, dried and filtered. The water dispersible granule overcomes the harm of organic solvent in missible oil for the environment and the deficiencies of pulvis, so as to be easy to use, safe for the human beings and environment, and convenient to control the release and for orientation; as the used dispersant is multipolymer dispersant, the synergic action among radicals causes the dispersibility of the difenoconazole water dispersible granule to be superior to that of general micromolecule dispersant and homopolymer dispersant, so that the difenoconazole water dispersible granule prepared by the method has good dispersibility and rapid disintegration, and the suspension percentage in the water can reach 95.6%. In addition, the preparation technique has the advantages of simple operation, environmental protection and low cost, and is suitable for large-scale industrial production.