WO2020057289A1 - 一种含有吡唑醚菌酯的水分散粒剂及其制备方法 - Google Patents
一种含有吡唑醚菌酯的水分散粒剂及其制备方法 Download PDFInfo
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- WO2020057289A1 WO2020057289A1 PCT/CN2019/100005 CN2019100005W WO2020057289A1 WO 2020057289 A1 WO2020057289 A1 WO 2020057289A1 CN 2019100005 W CN2019100005 W CN 2019100005W WO 2020057289 A1 WO2020057289 A1 WO 2020057289A1
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- WIPO (PCT)
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- water
- pyraclostrobin
- dispersible granules
- preparation
- aqueous
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Classifications
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N47/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid
- A01N47/08—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid the carbon atom having one or more single bonds to nitrogen atoms
- A01N47/10—Carbamic acid derivatives, i.e. containing the group —O—CO—N<; Thio analogues thereof
- A01N47/24—Carbamic acid derivatives, i.e. containing the group —O—CO—N<; Thio analogues thereof containing the groups, or; Thio analogues thereof
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
- A01N25/02—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests containing liquids as carriers, diluents or solvents
- A01N25/04—Dispersions, emulsions, suspoemulsions, suspension concentrates or gels
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
- A01N25/12—Powders or granules
- A01N25/14—Powders or granules wettable
Definitions
- the present invention belongs to the field of pesticide preparations, and particularly relates to an aqueous dispersion granule containing pyrazoxystrobin and a preparation method thereof.
- Pyraclostrobin is a methacrylate bactericide. It is a mitochondrial respirator. It prevents electron transfer and destroys energy transfer in cytochrome synthesis. It has protection, treatment and leaf osmotic conductivity. Pyraclostrobin is a broad-spectrum fungicide, especially suitable for crops with multiple diseases. Registered on more than 100 crops to control at least 49 diseases, involving all the major pathogens of the four subphyta in the fungal taxonomy. At the same time, pyraclostrobin has significant anti-stress and health effects, and has broad application prospects.
- Pyraclostrobin has four different crystal forms, the melting points of the four crystal forms are different but the biological activity is completely the same, the different crystal forms of the original drug are mutually transformed under certain conditions, and the melting point of Form 1 is 55 ° C ⁇ 56 ° C, the melting point of Form 2 is 57 ° C ⁇ 58 ° C, the melting point of Form 3 is 59 ° C ⁇ 60 ° C, and the melting point of Form 4 is 65 ° C ⁇ 67 ° C.
- the processing formulations of pyraclostrobin include emulsifiable concentrates, suspensions, and water-dispersible granules. The solubility of pyraclostrobin in organic solvents is relatively large.
- pyraclostrobin The four crystalline forms of pyraclostrobin are suitable for the preparation of emulsifiable concentrates. Formulations, but the water suspension and water dispersible granules have higher melting point requirements for the original drug, and the crystalline form 4 pyrazoxystrobin is more suitable for preparing water suspension and water dispersible granules.
- the lower melting point of the pyrazostrobin drug of Form 1, Form 2 and Form 3 during sand milling or jet milling due to the increase in temperature, the shape of the original drug particles changes from solid to liquid ( Melting); on the other hand, as the particle size decreases, the specific surface area increases, and the particles become smaller, the melting probability will increase, and the temperature will increase, causing the material to stick or paste, which will seriously affect the dispersion of the water-dispersible granules. Properties, suspension rate, storage stability, etc., which in turn affects the bioavailability and efficacy of pyraclostrobin.
- the conventional process for preparing water-dispersed granules is divided into two types.
- One method is dry (airflow) pulverization-fluidized bed granulation or extrusion granulation, and the second method is wet (sand milling). Crushing-spray granulation.
- Chinese invention patent CN 106172385 A discloses a method for preparing water-dispersible granules containing pyrazoxystrobin by granulation by wet sand grinding and spray drying
- CN 10272637B discloses a dry air jet pulverization-spinning method. Processing method of fluidized bed granulated pyraclostrobin water dispersible granules.
- the crystalline form of azoxystrobin is strictly required.
- the crystalline form with a lower melting point or a mixed crystalline form is melted due to temperature rise during crushing and / or granulation, which affects normal production or the quality of the product is unqualified.
- Embodiments of the present invention provide a water-dispersible granule containing pyraclostrobin and a preparation method thereof, so as to solve the problem that some materials containing pyraclostrobin exist in the process of air jet pulverization or sand grinding. It is easy to melt, stick, or paste, and the technical problems of poor dispersibility, low suspension rate, and unsatisfactory effect of water-dispersible granules containing pyrazoxystrobin caused by melting, blocking, or pasting of materials.
- a water-dispersible granule containing pyraclostrobin is provided, and the pyraclostrobin in the water-dispersed granules is coated in a microsphere.
- the water-dispersible granules containing pyraclostrobin is a single pesticide active ingredient pyraclostrobin water-dispersed granules, or the water-dispersed granules mixed with pyraclostrobin and tebuconazole Agent and water-dispersible granules of pyraclostrobin and cymoxanil.
- a method for preparing a water-dispersible granule containing pyraclostrobin which includes a single pesticide active ingredient, pyraclostrobin water-dispersible granules, pyraclostrobin and tebuconazole Preparation method of water-dispersed granules compounded with alcohol and water-dispersible granules compounded with pyrazoxystrobin and cyprofen.
- the preparation of the water-dispersed granules containing pyrazoxystrobin according to the present invention includes three steps: 1 is the preparation of pyraclostrobin microcapsule aqueous suspension, step 2 is the preparation of aqueous sanding slurry, and step 3 is the preparation of water-dispersible granules containing pyraclostrobin
- the pyraclostrobin as a microcapsule core material is coated in a capsule shell having a certain porosity,
- the microcapsule shell blocks the influence of the adverse environment on the material of the capsule core, and reduces the degradation rate of pyraclostrobin in the capsule core.
- it can control the pyraclostrobin in the capsule core to pass at a certain rate.
- the pores on the capsule shell are released into the surrounding environment, which effectively prolongs the period of action of pyraclostrobin, improves bioavailability, and fully exerts its resistance to stress And health effects to improve the control of plant diseases.
- the water-dispersible granules compounded with pyraclostrobin and tebuconazole, and the water-dispersed granules compounded with pyraclostrobin and cyanoxazole, wherein pyraclostrobin is coated in microcapsules Internally, the adverse effects between different components in the compounded water-dispersible granules are effectively controlled, and the synergistic effect of pyraclostrobin and tebuconazole or cyfludinil is fully exerted, and the present invention contains pyridine
- the water-dispersible granules of pyraclostrobin have a certain sustained-release type, which can reduce the frequency of application and maintain control of various plant diseases.
- a water-dispersible granule containing pyraclostrobin is provided, and the pyraclostrobin in the water-dispersed granules is coated in a microcapsule, and the containing
- the water-dispersible granules of pyraclostrobin are a single pesticide active ingredient of pyraclostrobin, or the water-dispersible granules of pyraclostrobin and tebuconazole and pyraclostrobin Water-dispersible granules formulated with cream urea cyanide.
- a method for preparing a water-dispersible granule containing pyraclostrobin which comprises a single pesticide active ingredient, pyraclostrobin water-dispersed granules, pyraclostrobin and Preparation method of tebuconazole-containing water-dispersed granules and pyrazoxystrobin-containing compound and water-dispersed granules.
- the preparation of the water-dispersed granules containing pyraclostrobin in the present invention includes three steps : Step 1 is the preparation of pyraclostrobin microcapsules aqueous suspension, step 2 is the preparation of aqueous sand mill slurry, and step 3 is the preparation of water-dispersible granules containing pyraclostrobin. Specific steps are as follows:
- Step 1 Preparation of pyraclostrobin microcapsule aqueous suspension
- Step 2 Preparation of Waterborne Sanding Slurry
- wetting and dispersing assistant, pH adjuster, defoaming agent, inert carrier and water are mixed uniformly, and sand-milled into an aqueous sand-grinding slurry with an average particle diameter of 0.5 pm to 2.0 pm of solid matter , Ready for use; or wetting and dispersing aid, pH adjuster, defoaming agent, inert carrier, water and tebuconazole or carbamide cyanide are mixed uniformly, and the average particle size of the sand is 0.5 Water-based sanding slurry of tebuconazole from pm to 2.0pm or water-based sanding slurry of frosturonium cyanide, set aside.
- Step 3 Preparation of water-dispersible granules containing pyraclostrobin
- step 1 mixing the pyraclostrobin microcapsule aqueous suspension obtained in step 1 with the aqueous sand mill slurry of the auxiliary agent obtained in step 2; or mixing the pyraclostrobin microcapsule aqueous suspension obtained in step 1 and the step
- the obtained aqueous sand mill slurry of tebuconazole or frost urea cyanide is mixed uniformly, and the water-dispersed granules containing pyrazoxystrobin according to the present invention are obtained by spray drying to remove water, including a single pesticide.
- the active ingredients are pyraclostrobin water-dispersed granules, pyraclostrobin and tebuconazole and water-dispersed granules, or pyraclostrobin and safluuron-cyanide compounded water-dispersed granules.
- the mass percentage of pyraclostrobin in the single pesticide active ingredient pyraclostrobin in water-dispersible granules is 5% to 50%; and / or the pyraclostrobin and tebuconazole
- the mass percentage content of the total active ingredient in the alcohol-dispersed water-dispersible granules is 10% to 60%, and the mass ratio of pyraclostrobin to tebuconazole is 1: 1 to 1: 3; and / or the
- the mass percentage of the total active ingredient in the water-dispersible granules of pyraclostrobin and cymoxanil is 10% ⁇ 60%, and the mass ratio of pyraclostrobin and cymoxanil is 1: 1 ⁇ 1 : 6.
- the emulsifying and dispersing agent described in step 1 is one or two or more of sodium lignosulfonate, polycarboxylate, castor oil polyoxyethylene ether, and polyoxyethylene sorbitan monooleate.
- the amine compound is one or two or more of ethylenediamine, propylenediamine, hexamethylenediamine, diethylenetriamine, and triethylenetetramine.
- the wetting and dispersing aid described in step 2 is one or two of sodium ligninsulfonate, polycarboxylate, alkyl sulfate, alkylsulfonate and alkylphenylsulfonate. More than one mixture; the inert carrier is one or a mixture of two or more of kaolin, white carbon black and diatomaceous earth; the pH adjuster is citric acid; the defoamer is organic Silicone defoamer.
- Embodiment 1 is a diagrammatic representation of Embodiment 1:
- Step 1 Preparation of 20% pyrazoxystrobin microcapsule aqueous suspension
- MR-200 polymethylene polyphenyl isocyanate
- Ultrazine NA lignin sulfonate
- BY-125 castor oil polyoxyethylene ether
- Dissolve with stirring to prepare an aqueous phase add the oil phase to the aqueous phase and shear to prepare a 0 / W emulsion with an average particle size of 0.5pm to 2.0pm, and then slowly add a 10% diethylenetriamine aqueous solution 2.0 to the emulsion with stirring.
- K12 alkyl sulfate
- citric acid pH 5.0 ⁇ 7.0
- 300.0g of calcined kaolin to disperse evenly, make up 1000g with water, and mix by sand to prepare an average particle size of 0.5pm-2 .Opm water-based sanding slurry with a solids content of 60%.
- Embodiment two [0032]
- Mondur MRS polymethylene polyphenyl isocyanate
- an oil phase lO.Og Borresperse NA (lignin sulfonate) and l.Og Tween-80 (polyoxyethylene sorbitan monooleic acid) Ester
- the oil phase was added to the aqueous phase and sheared to prepare an average particle size of 0.5pm-2. (Vm 0 / W emulsion, and then slowly added to the emulsion with stirring. 7.7g of 20% triethylenetetramine aqueous solution, holding the reaction at 70 ° C ⁇ 5 ° C for lOh.
- Microcapsule microsuspension aqueous suspension wherein the solid content is about 38.5%
- Step 1 Preparation of 50% pyrazoxystrobin microcapsule aqueous suspension
- 102.0 g of pyraclostrobin (98%) is heated to 70 ° C ⁇ 5 ° C, stirred and melted, and then 1.5 g is added.
- PM-200 polymethylene polyphenyl isocyanate
- 2700 polycarboxylate
- EL-80 castor oil polyoxyethylene ether
- Reax AG lignin sulfonate
- Tersperse 2700 polycarboxylate
- pH was adjusted to 5-7 with an appropriate amount of citric acid
- 300.0 g of diatomaceous earth was added to disperse Uniform, make up 100 g with water, mix and homogenize and grind to prepare water-based sanding slurry with average particle size of 0.5pm ⁇ 2 (Vm, where the solid content is 38%.
- Mondur MRS polymethylene polyphenyl isocyanate
- SMA 520 polycarboxylate
- the oil phase is added to the water phase to shear. Cut to prepare an average particle size of 0.5pm-2.
- the 10% pyrazoxystrobin microcapsule suspension 100 g obtained in step 1 and 33.3 g of the aqueous sand mill slurry 3 obtained in step 2 are mixed uniformly, and the water is removed by spray drying, and less than 150 meshes are removed by sieving. particles, to obtain a 10% Kresoxim-pyrazol tebuconazole water dispersible granules.
- MR-200 polymethylene polyphenyl isocyanate
- Tween 80 polyoxyethylene sorbitan monooleate
- SP-3936 polycarboxylic acid
- Reax 825E lignin sulfonate
- the oil phase was added to the aqueous phase to prepare an average particle diameter of 0.5pm ⁇ 2.0pm, 0 / W Emulsion, then slowly add 19.0g of 10% diethylenetriamine aqueous solution to the emulsion with stirring, and hold the temperature at 70 ° C ⁇ 5 ° C for 1.0 hour.
- adjust the pH value to 5.0 ⁇ 7.0 with an appropriate amount of citric acid.
- 200.0 g was made up to obtain 25% pyrazoxystrobin microcapsules aqueous suspension, wherein the solid content was 32
- Agrilan 700 polycarboxylate
- Reax AG lignin sulfonate
- the drug (96.0%) and 184.5g of kaolin are uniformly dispersed, and 1000g of water is used to make up.
- sand grinding is performed to prepare an aqueous sanding slurry with an average particle size of 0.5pm ⁇ 2 Opm, where the solid content is 52.2%.
- Embodiment 6 [0065] Preparation of 60% pyraclostrobin-tebuconazole water-dispersible granules
- PM-200 polymethylene polyphenyl isocyanate
- oil phase 3.2 g of Reax 100M (lignin sulfonate) was dissolved in 100 g of water and stirred to prepare an aqueous phase.
- the oil phase was added to the aqueous phase.
- Medium shear was prepared into a 0 / W emulsion with an average particle size of 0.5pm ⁇ 2.0pm, and then 7.0g of a 10% ethylenediamine aqueous solution was slowly added to the emulsion under stirring, and the temperature was maintained at 70 ° C ⁇ 5 ° C for 1.0 hours.
- the 10% pyraclostrobin microcapsule aqueous suspension was prepared in the same manner as in step 1 of Example 4, and the solid content of the obtained 10% pyraclostrobin microcapsule aqueous suspension was 27.1%.
- the 40% pyrazoxystrobin microcapsule aqueous suspension was prepared in the same manner as in step 1 of Example 6, and the solid content of the 40% pyrazoxystrobin microcapsule aqueous suspension obtained was 44.4%.
- Step 3 Preparation of 20% pyrazoxystrobin + 40% cream urea cyanide water dispersible granules
- the 25% pyrazoxystrobin microcapsule aqueous suspension was prepared in the same manner as in step 1 of Example 5.
- the solid content of the 25% pyrazoxystrobin microcapsule aqueous suspension obtained was 32.5%.
- Step 3 Preparation of 6% pyrazoxystrobin + 36% cream urea cyanide water dispersible granules
- the water-dispersible granules containing pyrazoxystrobin according to the present invention can significantly improve the dispersibility of the formulation and the suspension rate and storage stability of the active ingredient of the pesticide.
- Table 1 shows the water-dispersed granules prepared in the examples of the present invention and the pesticide active ingredients that are commercially available or prepared by the conventional wet pulverization-spray granulation method and Test results of the main quality control items of water-dispersible granules with the same content.
- the dispersibility test method in Table 1 is to add a certain amount of water-dispersible granules to a prescribed volume of water and stir Mix to make a suspension. After standing for a period of time, remove the top 9/10 suspension, dry the bottom 1/10 suspension and the precipitate, and measure by gravimetric method.
- the suspension rate and thermal storage decomposition rate are according to GB / T
- the following field efficacy test shows that compared with the prior art, the water-dispersible granules containing pyrazoxystrobin according to the present invention can significantly improve the bioavailability, fully exert the anti-stress and health-care effects, and prolong the pyrazol ether
- the period of action of mycophenolate esters can improve the control effect on plant diseases.
- the medicine used in the test is provided by the examples of the present invention.
- the control medicine is a similar preparation on the market. The crop and its cultivation method are used.
- the application dose, method and control object of the medicine are the same as those on the market. See Table 2 for details. .
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- Pest Control & Pesticides (AREA)
- Plant Pathology (AREA)
- Engineering & Computer Science (AREA)
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- Agronomy & Crop Science (AREA)
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AU2019341143A AU2019341143A1 (en) | 2018-09-18 | 2019-08-09 | Water-dispersible granules containing pyraclostrobin and preparation method therefor |
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CN201811079089.X | 2018-09-18 | ||
CN201811079089.XA CN109221208A (zh) | 2018-09-18 | 2018-09-18 | 一种含有吡唑醚菌酯的水分散粒剂及其制备方法 |
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CN109221208A (zh) * | 2018-09-18 | 2019-01-18 | 深圳诺普信农化股份有限公司 | 一种含有吡唑醚菌酯的水分散粒剂及其制备方法 |
CN115226721B (zh) * | 2022-08-24 | 2024-05-14 | 中国农业科学院农业环境与可持续发展研究所 | 一种吡唑醚菌酯纳米微胶囊及其制备方法 |
CN116267977A (zh) * | 2023-03-23 | 2023-06-23 | 江苏徐淮地区淮阴农业科学研究所 | 一种防治芡实叶瘤病的农药组合物及其应用 |
Citations (4)
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CN101647456A (zh) * | 2009-06-22 | 2010-02-17 | 陕西标正作物科学有限公司 | 一种含有吡唑醚菌酯和霜脲氰的杀菌组合物 |
CN103563944A (zh) * | 2012-08-05 | 2014-02-12 | 南京华洲药业有限公司 | 一种含吡唑醚菌酯和戊唑醇的杀菌组合物及其应用 |
CN104823996A (zh) * | 2015-05-13 | 2015-08-12 | 山东农业大学 | 一种吡唑醚菌酯微胶囊的制备方法 |
CN109221208A (zh) * | 2018-09-18 | 2019-01-18 | 深圳诺普信农化股份有限公司 | 一种含有吡唑醚菌酯的水分散粒剂及其制备方法 |
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BR102012027914A2 (pt) * | 2011-11-01 | 2016-01-26 | Dow Agrosciences Llc | grânulos com propriedades de dispersão aperfeiçoadas |
BR102012027933A2 (pt) * | 2011-11-01 | 2015-11-17 | Dow Agrosciences Llc | composições pesticidas estáveis |
CN104872160A (zh) * | 2015-05-14 | 2015-09-02 | 京博农化科技股份有限公司 | 一种吡唑醚菌酯制剂及其制备方法 |
CN104855403A (zh) * | 2015-06-11 | 2015-08-26 | 河南远见农业科技有限公司 | 一种无有机溶剂型吡唑醚菌酯微囊悬浮剂及制备方法 |
CN106689123A (zh) * | 2016-11-15 | 2017-05-24 | 北京明德立达农业科技有限公司 | 一种微囊悬浮‑悬浮剂及其制备方法和应用 |
CN107853310A (zh) * | 2017-10-30 | 2018-03-30 | 北京明德立达农业科技有限公司 | 一种含吡唑醚菌酯和氟唑菌酰胺的微囊悬浮‑悬浮剂及其制备方法 |
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2018
- 2018-09-18 CN CN201811079089.XA patent/CN109221208A/zh active Pending
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2019
- 2019-08-09 WO PCT/CN2019/100005 patent/WO2020057289A1/zh active Application Filing
- 2019-08-09 AU AU2019341143A patent/AU2019341143A1/en not_active Abandoned
Patent Citations (4)
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CN101647456A (zh) * | 2009-06-22 | 2010-02-17 | 陕西标正作物科学有限公司 | 一种含有吡唑醚菌酯和霜脲氰的杀菌组合物 |
CN103563944A (zh) * | 2012-08-05 | 2014-02-12 | 南京华洲药业有限公司 | 一种含吡唑醚菌酯和戊唑醇的杀菌组合物及其应用 |
CN104823996A (zh) * | 2015-05-13 | 2015-08-12 | 山东农业大学 | 一种吡唑醚菌酯微胶囊的制备方法 |
CN109221208A (zh) * | 2018-09-18 | 2019-01-18 | 深圳诺普信农化股份有限公司 | 一种含有吡唑醚菌酯的水分散粒剂及其制备方法 |
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