CN113207875A - Mesotrione water suspension agent and preparation method and application thereof - Google Patents
Mesotrione water suspension agent and preparation method and application thereof Download PDFInfo
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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
- 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
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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
- 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
- A01N25/24—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 ingredients to enhance the sticking of the active ingredients
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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
- A01N41/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a sulfur atom bound to a hetero atom
- A01N41/02—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a sulfur atom bound to a hetero atom containing a sulfur-to-oxygen double bond
- A01N41/10—Sulfones; Sulfoxides
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Abstract
The invention relates to a mesotrione water suspending agent, a preparation method and an application thereof, wherein the water suspending agent comprises the following components in percentage by weight: 10-40% of mesotrione technical, 1-6% of wetting dispersant, 0.5-5% of thickening agent, 0.1-0.5% of defoaming agent, 2-6% of antifreezing agent, 0.1-1% of preservative, 0.1-0.3% of pH regulator, 0.1-1% of spraying aid and the balance of deionized water, wherein the total mass percentage of the rest is 100%. Compared with the prior art, the aerial application type efficient environment-friendly mesotrione water suspending agent has the advantages that the novel auxiliary agent system is adopted, the volatilization drift loss of mesotrione in the spraying process of an unmanned aerial vehicle is reduced, the utilization efficiency of pesticides is improved, the environmental pollution is reduced, the aerial application type efficient environment-friendly mesotrione water suspending agent is strong in wettability and capable of remarkably enhancing the adhesive force on plant leaves by combining the spraying technology of the unmanned aerial vehicle, and the aerial application type mesotrione water suspending agent is efficient and green.
Description
The application is a divisional application with application date of 2017, 11 and 29, application number of 201711227823.8 and invention name of 'an aerial application type mesotrione water suspension and a preparation method thereof'.
Technical Field
The invention belongs to the field of pesticide preparations, and particularly relates to a mesotrione water suspension and a preparation method and application thereof.
Background
Mesotrione (mesotrione), also known as mesotrione, is a new triketone herbicide, has contact poisoning effect and specificity, shows herbicidal activity mainly by inhibiting hydroxy phenyl pyruvate dioxygenase in plants, and can effectively control broad leaf weeds and some gramineous weeds. The mesotrione is easy to conduct in the xylem and phloem of the plant, has contact killing effect and specificity, and the biological activity of the mesotrione is 10 times higher than that of the mesotrione.
With the rapid development of Chinese science and technology and the popularization of modern pesticide technology, the airplane pesticide spraying technology gradually becomes a new favorite for modern pesticide spraying in China. The airplane has the characteristics of high efficiency, safety, convenience and no terrain limitation when spraying pesticides, so that the airplane is concerned in the field of agricultural plant protection.
The spray auxiliary agent is a common spray auxiliary agent used in the using process of the prior pesticide, fertilizer, sanitary preparation and the like, particularly in the conventional volume spray filtration, and the dosage is reduced by improving the using effect of the product by increasing the wetting spreading and adhesion of the product. The pesticide spraying auxiliary agents are classified according to chemical components, mainly comprise mineral oil, surfactants, vegetable oil, organic silicon and the like, the mineral oil spraying auxiliary agents can promote the penetration and absorption of herbicides on wax layers on plant leaves and insect body surfaces, but have poor selectivity on certain crops, and have strict requirements on environmental conditions when in use, and in addition, the mineral oil belongs to petroleum products and has limited raw material sources; the organosilicon auxiliary agent can effectively reduce the surface tension of the solution and greatly promote the diffusion of the medicament, but the organosilicon auxiliary agent is quite sensitive to the pH value of the aqueous solution and is very easy to be condensed and lose the effect under the condition that the pH value is less than 5 or more than 9, so the application range of the organosilicon auxiliary agent is narrow due to the stability problem; the vegetable oil spraying auxiliary agent can increase the viscosity of the liquid medicine, has strong permeability, and has more commercialized vegetable oil spraying auxiliary agent products but higher price.
The prior mesotrione pesticide has the problems of poor dispersion stability, austenite curing and easy precipitation and precipitation, and the problems of easy precipitation and aggregation, blockage of a spray head, incapability of effectively attaching to the surface of a plant and the like when the unmanned aerial vehicle is used for spraying the pesticide.
Disclosure of Invention
The invention aims to solve the problems and provide an aerial application type mesotrione water suspension and a preparation method thereof, which can reduce the volatilization and drift loss of liquid medicine and increase the deposition amount of fog drops on leaf surfaces.
The purpose of the invention is realized by the following technical scheme:
an aviation application type mesotrione water suspending agent comprises the following components in percentage by weight:
further, the wetting dispersant is a terpolymer dispersant, and the dispersant is a carboxylate copolymer disclosed in Chinese patent CN 102558424B. The dispersing agent has long carbon chains, more active adsorption points and straight chains capable of playing a role in spatial repulsion, has better dispersing performance to a suspension system due to the special structure of the dispersing agent, and can effectively reduce the agglomeration of liquid particles in the dispersion system.
Further, the thickening agent is selected from one or more of magnesium aluminum silicate, hydroxymethyl cellulose, xanthan gum or polyvinyl alcohol.
Further, the defoaming agent is selected from one or more of a linear chain polyether type defoaming agent, fatty acid polyoxyethylene ether or an organic silicon defoaming agent.
Further, the antifreezing agent is one or more selected from ethylene glycol, polyethylene glycol, propylene glycol, glycerol or sorbitol.
Furthermore, the preservative is selected from one or more of formaldehyde, potassium sorbate, sodium benzoate or isothiazolinone.
Further, the pH regulator is selected from one or more of citric acid, acetic acid or phosphoric acid.
Further, the spraying auxiliary agent is selected from one or more of hydroxypropyl guar gum, glycerol, xanthan gum and sodium carboxymethyl cellulose. The spraying assistant has stable performance and lower cost, can reduce the volatilization and drift loss of liquid medicine and increase the deposition amount of fog drops on the leaf surface.
The preparation method of the aerial application mesotrione water suspension comprises the following steps:
(1) pre-crushing the mesotrione technical product, mixing and stirring the mesotrione technical product, a wetting dispersant, an antifreezing agent, a defoaming agent, a preservative and deionized water uniformly according to a ratio, sanding the mixture, controlling the temperature below 40 ℃, and stopping sanding after the particle size meets the requirement;
(2) adding the thickening agent and the pH regulator, continuing sanding, and finally adding the spraying auxiliary agent to obtain the aviation application mesotrione water suspension.
Further, the particle size in step (1) is 0.5-5 μm, and the pH in step (2) is adjusted to 6-8.
The invention solves the technical problem that a proper water suspending agent assistant system is selected to solve the problems of poor dispersion stability, austenite curing and easy precipitation and precipitation; in addition, the best spraying auxiliary agent is selected, the problems that an unmanned aerial vehicle is used for spraying medicine, precipitation and aggregation are generated, a spray head is blocked, and the spraying head cannot be effectively attached to the surface of a plant are solved.
The specific principle is as follows: the hydroxypropyl guar gum serving as the spray auxiliary agent in the invention 1) is obtained by chemically modifying guar gum powder, belongs to macromolecular saccharides, and is the most widely applied fracturing thickener in China at present; glycerin is colorless viscous liquid, is commonly used as a solvent and a lubricant, can absorb moisture from air, and has the function of water retention; the xanthan gum is a rod-shaped double-helix structure, is a water-soluble high molecular compound and has the function of supporting solid particles in aqueous solution; magnesium aluminum silicate is a trioctahedral layered silicate mineral, belongs to an inorganic polymer thickener, can rapidly form a colloid structure in a three-dimensional space when being mixed with water, increases the viscosity of a system, can play a good stabilizing role on a pesticide suspension concentrate, and has the combined action of multiple components, so that the volatilization drift loss of mesotrione in the spraying process of an unmanned aerial vehicle is reduced, the pesticide utilization efficiency is improved, and the environmental pollution is reduced. 2) The aerial application type efficient environment-friendly mesotrione water suspension agent has strong wettability and can obviously enhance the adhesive force on plant leaves by combining the unmanned aerial vehicle pesticide spraying technology, thereby reducing the volatilization and drift of the liquid medicine and obviously improving the pesticide utilization rate.
Compared with the prior art, the invention has the following advantages:
1. in the actual use process, the steam pressure of water can be increased by adding the spraying auxiliary agent, the evaporation and drift of mesotrione fog drops in the spraying process are reduced, the deposition amount of mesotrione on crops is increased, the application efficiency is high, the distribution uniformity of the mesotrione fog drops is improved, the spraying drift and fog drop evaporation are reduced, so that the use amount of mesotrione is reduced, the environmental pollution is reduced, and the pesticide is effectively attached to the surface of a plant.
2. The GPS positioning spraying technology is combined, the pesticide flow and the fog drop distribution of the spray head are accurately controlled, the automatic quantitative and accurate control spraying of the pesticide is realized, the utilization efficiency of the pesticide is improved, and the national policy of pesticide reduction and efficiency increase is met.
3. The phenomena of nozzle blockage in actual spraying operation and the like can be effectively avoided.
4. The product has stable performance, normal temperature storage, convenient transportation and use, and good dispersibility and stability in practical application.
5. The preparation process is simple, the production cost is low, no irritant substance is introduced in the whole process, and the pesticide spray auxiliary is efficient and green.
Detailed Description
The present invention is described in detail below with reference to specific examples, but the present invention is not limited thereto in any way.
Example 1
A10% aviation application type mesotrione water suspension concentrate comprises the following components in percentage by weight: 10% of mesotrione, 2% of ternary polymerization dispersant of carboxylate and derivatives thereof (Shanghai is a macromolecule material Co., Ltd.), 2% of hydroxymethyl cellulose, 5% of thickening agent xanthan gum (2% aqueous solution), 0.5% of silicone defoamer, 0.2% of sodium benzoate and 4% of glycol (Aladdin reagent Shanghai Co., Ltd.), and a proper amount of pH regulator citric acid enables the pH of the water suspension agent to be 6-8, 0.2% of hydroxypropyl guar gum, 0.1% of sodium hydroxymethyl cellulose and deionized water is added to make up to 100%.
The preparation method comprises the following steps:
the first step is as follows: pre-crushing the mesotrione technical product, mixing the pre-crushed mesotrione technical product with a wetting dispersant, an antifreezing agent, a defoaming agent, a preservative and deionized water according to a certain proportion, uniformly stirring, continuously sanding by a horizontal sanding machine, controlling the temperature below 40 ℃, and stopping sanding after the particle size meets the requirement.
The second step is that: adding 5 percent of thickening agent xanthan gum (2 percent of water solution) and citric acid as pH regulator, continuously sanding for 10 minutes, and then adding 0.5 percent of spraying auxiliary agent hydroxypropyl guar gum and 0.5 percent of sodium carboxymethyl cellulose to obtain the aviation application type mesotrione water suspending agent.
Through detection, the main technical indexes of the product are as follows:
effective content: 10 percent; appearance: a light yellow homogeneous liquid; average particle size: 3.86 μm; viscosity: 512 mpa.s; suspension percentage: 97.5 percent; dispersibility: dispersing in water in cloud form; cold storage stability: qualified; heat storage stability: and (4) passing.
In order to test the spreading and deposition conditions of the pesticide liquid on the plant leaves, a fog drop test card is adopted to detect the spreading area and the residual quantity of fog drops, the residual quantity of the fog drops is represented by the number of liquid spots of square centimeters, and the spreading condition of the liquid drops is represented by the average diameter of the liquid spots.
Airplane spraying experiment: seven spray test cards were fixed at the apex, center and midpoint of both sides of a 80m x 50m rice field, respectively, using two commercially available 10% mesotrione suspensions as controls, with a fixed mesotrione suspension dosage of 30mL/m2The water dosage is 2L/mu, and the test results are shown in Table 1:
table 1 spreading and deposition test results
| Test object | Average diameter/mm of drug spot | Per cm2Number of drug spots | 0.1 mul of liquid medicine evaporation time/s |
| Control reagent 1 | 2.2 | 0.30 | 3.1 |
| Control reagent 2 | 4.0 | 0.26 | 2.6 |
| Example 1 | 9.8 | 0.87 | 6.1 |
As can be seen from Table 1, the aviation application type mesotrione suspending agent has a good effect of improving the spreadability and settleability of liquid drops, and can effectively prolong the moisture retention time of the liquid drops on plant leaves.
Example 2
A15% aviation application type mesotrione water suspension concentrate comprises the following components in percentage by weight: 15% of mesotrione, 2.5% of ternary polymerization dispersant of carboxylate and derivatives thereof (Shanghai is a macromolecule material Co., Ltd.), 2.5% of hydroxymethyl cellulose, 5% of thickening agent xanthan gum (2% aqueous solution), 0.5% of silicone defoamer, 0.2% of sodium benzoate and 4% of glycol (Aladdin reagent Shanghai Co., Ltd.), wherein a proper amount of pH regulator citric acid enables the pH of the aqueous suspension to be 6-8, 0.2% of hydroxypropyl guar gum, 0.1% of sodium hydroxymethyl cellulose and deionized water is added to make up to 100%. The specific preparation was carried out as in example 1.
Through detection, the main technical indexes of the product are as follows:
effective content: 15 percent; appearance: a light yellow homogeneous liquid; average particle size: 4.01 μm; viscosity: 528 mpa.s; suspension percentage: 96.2 percent; dispersibility: dispersing in water in cloud form; cold storage stability: qualified; heat storage stability: and (4) passing.
In order to test the spreading and deposition conditions of the pesticide liquid on the plant leaves, a fog drop test card is adopted to detect the spreading area and the residual quantity of fog drops, the residual quantity of the fog drops is represented by the number of liquid spots of square centimeters, and the spreading condition of the liquid drops is represented by the average diameter of the liquid spots.
Airplane spraying experiment: seven spray test cards are respectively fixed at the vertex, the center and the middle points of two sides of a paddy test field of 80m multiplied by 50m, two commercial 15 percent mesotrione suspending agents are adopted as a control, and the fixed mesotrione suspending amount is 30mL/m2The water dosage is 2L/mu, and the test results are shown in Table 2:
table 2 spreading and deposition test results
As can be seen from table 2, the aviation application type mesotrione suspending agent has a good effect of improving the spreadability and settleability of liquid drops, and can effectively prolong the moisture retention time of the liquid drops on plant leaves.
Example 3
A40% aerial application mesotrione aqueous suspension comprises the following components in percentage by weight: 40% of mesotrione, 6% of ternary polymerization dispersant of carboxylate and derivatives thereof (Shanghai is a macromolecule material Co., Ltd.), 2.5% of hydroxymethyl cellulose, 5% of thickening agent xanthan gum (2% aqueous solution), 0.5% of silicone defoamer, 0.2% of sodium benzoate and 4% of glycol (Aladdin reagent Shanghai Co., Ltd.), and a proper amount of pH regulator citric acid enables the pH of the aqueous suspension to be 6-8, 0.3% of hydroxypropyl guar gum, 0.1% of sodium hydroxymethyl cellulose and deionized water is added to make up to 100%. The specific preparation was carried out as in example 1.
Through detection, the main technical indexes of the product are as follows:
effective content: 40 percent; appearance: a light yellow homogeneous liquid; average particle size: 4.25 μm; viscosity: 536 mpa.s; suspension percentage: 96.8 percent; dispersibility: dispersing in water in cloud form; cold storage stability: qualified; heat storage stability: and (4) passing.
In order to test the spreading and deposition conditions of the pesticide liquid on the plant leaves, a fog drop test card is adopted to detect the spreading area and the residual quantity of fog drops, the residual quantity of the fog drops is represented by the number of liquid spots of square centimeters, and the spreading condition of the liquid drops is represented by the average diameter of the liquid spots.
Airplane spraying experiment: seven spray test cards were fixed at the apex, center and midpoint of both sides of a 80m x 50m rice field, respectively, using two commercially available 40% mesotrione suspensions as controls, with a fixed mesotrione suspension dosage of 30mL/m2The water dosage is 2L/mu, and the test results are shown in Table 3:
table 3 spreading and deposition test results
| Test object | Average diameter/mm of drug spot | Per cm2Number of drug spots | 0.1 mul of liquid medicine evaporation time/s |
| Control reagent 1 | 2.1 | 0.25 | 3.2 |
| Control reagent 2 | 4.5 | 0.36 | 2.9 |
| Example 3 | 10.5 | 0.85 | 6.4 |
As can be seen from table 3, the aviation application type mesotrione suspending agent has a good effect of improving the spreadability and settleability of the liquid drops, and can effectively prolong the moisture retention time of the liquid drops on the plant leaves.
Example 4
An aviation application type mesotrione water suspension agent comprises the following components in percentage by weight: 20% of mesotrione, 1% of ternary polymerization dispersant of carboxylate and derivatives thereof (Shanghai is a macromolecule material Co., Ltd.), 0.5% of polyvinyl alcohol, 0.1% of fatty acid polyoxyethylene ether, 0.1% of sodium benzoate and 2% of glycol (Aladdin reagent Shanghai Co., Ltd.), and a proper amount of citric acid as a pH regulator enables the pH of the water suspension to be 6-8, 0.1% of hydroxypropyl guar gum and deionized water to be added to make up to 100%. The specific preparation was carried out as in example 1.
Example 5
An aviation application type mesotrione water suspension agent comprises the following components in percentage by weight: 25% of mesotrione, 6% of ternary polymerization dispersant of carboxylate and derivatives thereof (Shanghai is a macromolecule material Co., Ltd.), 5% of hydroxymethyl cellulose, 0.5% of fatty acid polyoxyethylene ether, 0.5% of sodium benzoate and 6% of glycol (Aladdin reagent Shanghai Co., Ltd.), and a proper amount of citric acid as a pH regulator enables the pH of the water suspension to be 6-8, 0.5% of hydroxypropyl guar gum and deionized water to be added to make up to 100%. The specific preparation was carried out as in example 1.
Example 6
An aviation application type mesotrione water suspension agent comprises the following components in percentage by weight: 40% of mesotrione, 5.5% of ternary polymerization dispersant of carboxylate and derivatives thereof (Shanghai is a macromolecule material Co., Ltd.), 2% of hydroxymethyl cellulose, 0.5% of fatty acid polyoxyethylene ether, 1% of sodium benzoate and 4% of glycol (Aladdin reagent Shanghai Co., Ltd.), and a proper amount of citric acid as a pH regulator enables the pH of the water suspension to be 6-8, 1% of hydroxypropyl guar gum and deionized water to be added to make up to 100%. The specific preparation was carried out as in example 1.
The embodiments described above are described to facilitate an understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.
Claims (10)
1. The mesotrione water suspension agent is characterized by comprising the following components in percentage by weight:
the balance of deionized water;
the thickening agent is selected from one or more of magnesium aluminum silicate, hydroxymethyl cellulose, xanthan gum and polyvinyl alcohol;
when the mass of the mesotrione is 10% of the total mass of the aqueous suspension concentrate, the thickening agent is a mixture of hydroxymethyl cellulose and xanthan gum; the mass of the hydroxymethyl cellulose is 2% of the total mass of the aqueous suspending agent; the mass of the xanthan gum is 5% of the total mass of the aqueous suspension;
when the mass of the mesotrione is 15% of the total mass of the aqueous suspension concentrate, the thickening agent is a mixture of hydroxymethyl cellulose and xanthan gum; the mass of the hydroxymethyl cellulose is 2.5 percent of the total mass of the aqueous suspending agent; the mass of the xanthan gum is 5% of the total mass of the aqueous suspension;
when the mass of the mesotrione is 20% of the total mass of the aqueous suspension concentrate, the thickening agent is polyvinyl alcohol; the mass of the polyvinyl alcohol is 0.5 percent of the total mass of the aqueous suspension;
when the mass of the mesotrione is 25% of the total mass of the aqueous suspension concentrate, the thickening agent is hydroxymethyl cellulose; the mass of the hydroxymethyl cellulose is 5% of the total mass of the aqueous suspending agent;
when the mass of the mesotrione is 40% of the total mass of the aqueous suspension concentrate, the thickening agent is hydroxymethyl cellulose; the mass of the hydroxymethyl cellulose is 2% of the total mass of the aqueous suspending agent;
when the mass of the mesotrione is 40% of the total mass of the aqueous suspension concentrate, the thickening agent is a mixture of hydroxymethyl cellulose and xanthan gum; the mass of the hydroxymethyl cellulose is 2.5 percent of the total mass of the aqueous suspending agent; the mass of the xanthan gum is 5% of the total mass of the aqueous suspension.
2. The mesotrione aqueous suspension concentrate of claim 1, wherein the wetting dispersant is a terpolymer dispersant.
3. The mesotrione aqueous suspension concentrate according to claim 1, wherein the defoamer is selected from one or more of a linear polyether defoamer, a fatty acid polyoxyethylene ether defoamer and a silicone defoamer.
4. The mesotrione aqueous suspension concentrate of claim 1, wherein the anti-freeze agent is selected from one or more of ethylene glycol, polyethylene glycol, propylene glycol, glycerol and sorbitol.
5. The mesotrione aqueous suspension concentrate according to claim 1, wherein the preservative is selected from one or more of formaldehyde, potassium sorbate, sodium benzoate and isothiazolinones.
6. The mesotrione aqueous suspension concentrate according to claim 1, wherein the pH adjusting agent is selected from one or more of citric acid, acetic acid and phosphoric acid.
7. The mesotrione aqueous suspension concentrate according to claim 1, wherein the spray aid is selected from one or more of hydroxypropyl guar, glycerol, xanthan gum and sodium hydroxymethyl cellulose.
8. The preparation method of mesotrione water suspension concentrate as claimed in any one of claims 1 to 7, which is characterized by comprising the following steps:
(1) pre-crushing the mesotrione technical product, mixing and stirring the mesotrione technical product, a wetting dispersant, an antifreezing agent, a defoaming agent, a preservative and deionized water uniformly according to a ratio, sanding the mixture, controlling the temperature below 40 ℃, and stopping sanding after the particle size meets the requirement;
(2) adding the thickening agent and the pH regulator, continuing sanding, and finally adding the spraying auxiliary agent to obtain the aviation application mesotrione water suspension.
9. The method for preparing mesotrione aqueous suspension concentrate according to claim 8, wherein the particle size in step (1) is 0.5-5 μm and the pH in step (2) is adjusted to 6-8.
10. Use of the mesotrione aqueous suspension of any one of claims 1 to 7 and the mesotrione aqueous suspension obtained by the preparation method of any one of claims 8 to 9 in aerial delivery.
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| CN108513975A (en) * | 2018-05-23 | 2018-09-11 | 河北威远生物化工有限公司 | A kind of Fluoxastrobin suspending agent and preparation method thereof for flying to prevent |
| CN108935458A (en) * | 2018-07-06 | 2018-12-07 | 南开大学 | Corn field herbicide synergistic auxiliary and preparation method and application thereof |
| CN109805006B (en) * | 2019-02-13 | 2021-11-19 | 中化化工科学技术研究总院有限公司 | Aviation low-amount spray weeding suspending agent and preparation and use methods thereof |
| CN110999903A (en) * | 2019-12-16 | 2020-04-14 | 上海交通大学 | Flying anti-spray solid auxiliary agent and preparation method thereof |
| CN113180039A (en) * | 2021-05-06 | 2021-07-30 | 苏州嘉佑生物科技有限公司 | Special auxiliary agent for unmanned aerial vehicle plant protection and flying prevention and preparation method and application thereof |
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