CN111226923B - Pyraclostrobin-oxine-copper microcapsule suspension-suspending agent and preparation method thereof - Google Patents
Pyraclostrobin-oxine-copper microcapsule suspension-suspending agent and preparation method 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
- A01N25/26—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 in coated particulate form
- A01N25/28—Microcapsules or nanocapsules
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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
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/34—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one nitrogen atom as the only ring hetero atom
- A01N43/40—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one nitrogen atom as the only ring hetero atom six-membered rings
- A01N43/42—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one nitrogen atom as the only ring hetero atom six-membered rings condensed with carbocyclic rings
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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
Abstract
The invention discloses a pyraclostrobin-oxine-copper microcapsule suspension-suspending agent which is formed by taking pyraclostrobin-oxine-copper as an effective component and matching with a capsule wall material, a capsule core solvent, an emulsifier, a thickening agent, a dispersing agent, an antifreezing agent, a preservative, a pH regulator and water. The pyraclostrobin-oxine-copper microcapsule suspension-suspending agent can reduce the addition of harmful solvents in old products and improve the environmental protection performance of the preparation; the combination of pyraclostrobin and oxine-copper has a synergistic effect, the control effect is obviously improved, and the use amount of pesticides is reduced; the lasting period is long, the pesticide application times are saved, and the labor cost is reduced. The invention also discloses a preparation method of the pyraclostrobin-oxine-copper microcapsule suspension-suspending agent. The method has simple process, can realize mass production and has extremely high application value.
Description
Technical Field
The invention relates to the field of pesticide preparation, and particularly relates to pyraclostrobin-oxine-copper microcapsule suspension-suspending agent and a preparation method thereof.
Background
At present, pests and germs have great harm to the growth of crops, and chemical prevention and control play a main role. In recent years, the annual chemical pesticide usage amount in China is too large, so that the problems of environmental pollution and food safety are increasingly severe, the survival of human beings is endangered, and the development of novel pesticides with low toxicity, high efficiency and environmental friendliness is the only way for realizing the safety of agricultural products.
The oxine-copper is a quinoline protective low-toxicity bactericide, belongs to organic copper chelate, has broad spectrum, high efficiency, low residue and safe use, and has good prevention and treatment effects on fungal and bacterial diseases. After spraying, a tight protective medicine film is formed on the surface of the plant, the affinity with the plant is strong, and the rain wash resistance is realized; the medicine film slowly releases bactericidal copper ions, effectively inhibits the germination of germs and invades people, thereby achieving the purpose of preventing and treating diseases.
Pyraclostrobin is a novel broad-spectrum bactericide and is a mitochondrial respiration inhibitor. I.e. by preventing electron transfer during cytochrome synthesis. Has the functions of protection, treatment and leaf penetration and conduction. Can be used for various crops such as wheat, peanut, rice, vegetables, fruit trees, tobacco, tea trees, ornamental plants, lawns and the like. Can be used for preventing and treating leaf blight, rust disease, powdery mildew, downy mildew, epidemic disease, anthracnose, scab, brown spot, damping off, etc. caused by ascomycetes, basidiomycetes, adelomycetes and oomycetes fungi. Has better control effects on powdery mildew, downy mildew, banana scab, leaf spot disease, grape downy mildew, anthracnose, powdery mildew, early blight, late blight, powdery mildew, leaf blight and the like of tomatoes and potatoes.
The microcapsule suspending agent pesticide refers to a pesticide formulation which is formed by forming a core-shell structure micro container by using a natural or synthetic polymer material, coating the pesticide therein and suspending the pesticide in water. It includes two portions of capsule wall and capsule core, the capsule core is pesticide effective component and solvent, and the capsule wall is film-forming high-molecular material. The preparation is divided into a continuous phase and a discontinuous phase, wherein the continuous phase is water and an auxiliary agent, and the discontinuous phase is a coated pesticide microcapsule. The microcapsule method is an important application technology in the preparation of pesticide formulations, and compared with the conventional pesticide technology, the microcapsule has the advantages of protecting core material substances from the influence of environmental conditions, slowing down the decomposition speed of pesticide active ingredients, reducing the volatilization loss of the pesticide active ingredients, improving the utilization rate of the active ingredients, prolonging the lasting period of the active ingredients, reducing the frequency and frequency of pesticide application and the like.
Disclosure of Invention
The invention aims to provide a pyraclostrobin-oxine-copper microcapsule suspension-suspending agent and a preparation method thereof aiming at the defects in the prior art.
In order to achieve the purpose, the invention adopts the technical scheme that:
the invention provides a pyraclostrobin-oxine-copper microcapsule suspension-suspending agent, which is characterized by comprising the following components in percentage by mass: 1-10% of pyraclostrobin, 1-30% of oxine-copper, 6-10% of capsule wall material, 15-20% of capsule core solvent, 1-5% of emulsifier, 0.1-1% of thickener, 3-5% of dispersant, 1-5% of antifreeze, 0.1-0.5% of preservative, 1-3% of pH regulator and the balance of water.
The pyraclostrobin-oxine-copper microcapsule suspension-suspending agent takes pyraclostrobin and oxine-copper as effective components.
Preferably, the capsule wall material is one or more of arabic gelatin, arabic gum, urea resin, isocyanate, polyamine and melamine resin.
Preferably, the capsule core solvent is an environment-friendly solvent, namely, rosin-based vegetable oil.
Further preferably, the capsule core solvent is methyl rosinyl oleate.
Preferably, the emulsifier is plant-derived cardanol polyoxyethylene-polyoxypropylene block polyether.
Preferably, the thickener is one or more of xanthan gum, white carbon black and magnesium aluminum silicate.
Preferably, the dispersing agent is one or more of D-425, carboxylate, plant-derived cardanol polyoxyethylene ether phosphate, naphthalene sulfonate, alkyl sulfonate, sodium alkyl benzene sulfonate, alkyl naphthalene sulfonate, sodium alkylphenol polyoxyethylene sulfate and lignosulfonate.
Preferably, the antifreezing agent is one or more of ethylene glycol, glycerol and glycerin.
Preferably, the preservative is one or more of benzoic acid, sodium benzoate and isothiazolinone.
Preferably, the pH regulator is one or more of hydrochloric acid, glacial acetic acid, sodium hydroxide and triethanolamine.
The invention provides a preparation method of pyraclostrobin-oxine-copper microcapsule suspension-suspending agent, which comprises the following steps:
s1, weighing pyraclostrobin and a capsule core solvent in proportion, stirring to completely dissolve the pyraclostrobin, adding an emulsifier and a capsule wall material, dissolving, and adjusting the pH value of a sample by using a pH regulator to form a microcapsule oil phase;
s2, weighing the oxine-copper, the thickening agent, the dispersing agent, the antifreezing agent, the preservative and the deionized soft water in proportion, stirring, and then carrying out homogenizing, shearing and sanding to obtain an oxine-copper suspending agent water phase;
s3, mixing the pyraclostrobin microcapsule oil phase and the oxine-copper suspending agent water phase under the action of homogenizing and shearing to obtain the pyraclostrobin-oxine-copper microcapsule suspending-suspending agent.
Preferably, in the step S1, the pH value of the sample is adjusted to 5-7 by using a pH adjusting agent.
By adopting the technical scheme, compared with the prior art, the invention has the following technical effects:
the pyraclostrobin-oxine-copper microcapsule suspension-suspending agent provided by the invention can reduce the addition of harmful solvents in old products and improve the environmental protection performance of the preparation; the combination of pyraclostrobin and oxine-copper has a synergistic effect, the control effect is obviously improved, and the use amount of pesticides is reduced; the lasting period is long, the pesticide application times are saved, and the labor cost is reduced.
The preparation method of the pyraclostrobin-oxine-copper microcapsule suspension-suspending agent provided by the invention comprises the steps of preparing the pyraclostrobin-microcapsule suspension agent by a re-coagulation method, preparing the oxine-copper suspension agent by wet sanding, and preparing the pyraclostrobin-oxine-copper microcapsule suspension-suspending agent under the action of shearing and mixing, so that the pyraclostrobin-oxine-copper microcapsule suspension-suspending agent has a new era significance, and is spread to the ranks of environment-friendly preparations. The microcapsule preparation has the functions of slow release and prolonged effective period, so that the quick-acting property of the pyraclostrobin-oxine-copper microcapsule suspension-suspending agent is improved, the use requirements of farmers are met, the sustained-acting property of the preparation is improved, the use frequency of pesticides is reduced, and the use amount of the pesticides is reduced. The production process is simple, can realize mass production, and has extremely high application value.
Drawings
FIG. 1 is a process flow diagram of the pyraclostrobin-oxine-copper microcapsule suspension-suspending agent.
Detailed Description
The invention provides a pyraclostrobin-oxine-copper microcapsule suspension-suspending agent which comprises the following components in percentage by mass: 1-10% of pyraclostrobin, 1-30% of oxine-copper, 6-10% of capsule wall material, 15-20% of capsule core solvent, 1-5% of emulsifier, 0.1-1% of thickener, 3-5% of dispersant, 1-5% of antifreeze, 0.1-0.5% of preservative, 1-3% of pH regulator and the balance of water.
The pyraclostrobin-oxine-copper microcapsule suspension-suspending agent provided by the invention is prepared by taking pyraclostrobin-oxine-copper as an effective component and adding a capsule wall material, a capsule core solvent, an emulsifier, a thickening agent, a dispersing agent, an antifreezing agent, a preservative, a pH regulator and water to form the pyraclostrobin-oxine-copper microcapsule suspension-suspending agent. The addition amount of harmful solvents in old products can be reduced, and the environmental protection performance of the preparation is improved; the combination of pyraclostrobin and oxine-copper has a synergistic effect, the control effect is obviously improved, and the use amount of pesticides is reduced; the lasting period is long, the pesticide application times are saved, and the labor cost is reduced.
In one embodiment of the present invention, the capsule core solvent is an environmentally friendly solvent, namely, rosin-based vegetable oil, more preferably methyl rosin-based benzoate; the emulsifier is plant-derived cardanol polyoxyethylene-polyoxypropylene block polyether; not only has no toxic action on the environment, but also improves the control effect of the pyraclostrobin-oxine-copper microcapsule suspension-suspending agent and reduces the production cost of the pesticide.
In one embodiment of the invention, the capsule wall material is one or more of gelatin, gum arabic, urea resin, isocyanate, polyamine and melamine resin; the thickener is one or more of xanthan gum, white carbon black and magnesium aluminum silicate; the dispersing agent is one or more of D-425, carboxylate, plant source cardanol polyoxyethylene ether phosphate, naphthalene sulfonate, alkyl sulfonate, sodium alkyl benzene sulfonate, alkyl naphthalene sulfonate, alkylphenol polyoxyethylene sodium sulfate and lignosulfonate; the antifreezing agent is one or more of ethylene glycol, glycerol and glycerin; the preservative is one or more of benzoic acid, sodium benzoate and isothiazolinone; the pH regulator is one or more of hydrochloric acid, glacial acetic acid, sodium hydroxide and triethanolamine.
The invention also provides a preparation method of the pyraclostrobin-oxine-copper microcapsule suspension-suspending agent, which comprises the following steps:
s1, weighing pyraclostrobin and a capsule core solvent in proportion, stirring to completely dissolve the pyraclostrobin, adding an emulsifier and a capsule wall material, dissolving, and adjusting the pH value of a sample by using a pH regulator to form a microcapsule oil phase;
s2, weighing the oxine-copper, the thickening agent, the dispersing agent, the antifreezing agent, the preservative and the deionized soft water in proportion, stirring, and then carrying out homogenizing, shearing and sanding to obtain an oxine-copper suspending agent water phase;
s3, mixing the pyraclostrobin microcapsule oil phase and the oxine-copper suspending agent water phase under the action of homogenizing and shearing to obtain the pyraclostrobin-oxine-copper microcapsule suspending-suspending agent.
The preparation method comprises the steps of preparing the pyraclostrobin microcapsule suspending agent by a re-coagulation method, preparing the oxine-copper suspending agent by wet sanding, and preparing the pyraclostrobin-oxine-copper microcapsule suspending-suspending agent under the action of shearing and mixing, thereby endowing the pyraclostrobin-oxine-copper microcapsule suspending-suspending agent with new era significance and enabling the pyraclostrobin-oxine-copper microcapsule suspending-suspending agent to cross the ranks of environment-friendly preparations. The microcapsule preparation has the functions of slow release and prolonged effective period, so that the quick-acting property of the pyraclostrobin-oxine-copper microcapsule suspension-suspending agent is improved, the use requirements of farmers are met, the sustained-acting property of the preparation is improved, the use frequency of pesticides is reduced, and the use amount of the pesticides is reduced. The production process is simple, can realize mass production, and has extremely high application value.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The invention is further described with reference to the following drawings and specific examples, which are not intended to be limiting.
Example 1
The pyraclostrobin-oxine-copper microcapsule suspension-suspending agent disclosed by the embodiment is prepared from pyraclostrobin-oxine-copper serving as an effective component, a capsule wall material, a capsule core solvent, an emulsifier, a thickening agent, a dispersing agent, an antifreezing agent, a preservative, a pH regulator and water. The components comprise the following components in percentage by mass:
pyraclostrobin (B): 10 percent of
And (3) quinoline copper: 30 percent of
Capsule wall material (arabinogelatin): 10 percent of
Capsule core solvent (rosin-based vegetable oil): 10 percent of
Emulsifier (plant-derived cardanol polyoxyethylene-polyoxypropylene block polyether): 3 percent of
Thickener (xanthan gum): 0.2 percent of
Dispersant (D-425): 3 percent of
Antifreeze (glycerin): 4 percent of
Preservative (benzoic acid): 0.1 percent of
pH regulators (glacial acetic acid and triethanolamine): 2 percent of
Water: 27.7 percent.
The preparation method of the pyraclostrobin-oxine-copper microcapsule suspension-suspending agent comprises the following steps: weighing 10g of pyraclostrobin original drug, 10g of Arabic gelatin, 10g of rosin-based vegetable oil and 3g of plant-derived cardanol polyoxyethylene-polyoxypropylene block polyether according to a proportion, stirring, and adjusting the pH value by using glacial acetic acid and triethanolamine to form a microcapsule oil phase. 30g of oxine-copper original drug, 0.2g of xanthan gum, 3g D-425, 4g of glycerol, 0.1g of benzoic acid and 27.7g of water are weighed according to the proportion, mixed and stirred, and then added into a sand mill to form a water phase. Mixing and shearing the pyraclostrobin microcapsule oil phase and the oxine-copper suspension system under the shearing action to form the 40% pyraclostrobin-oxine-copper microcapsule suspension-suspending agent.
Example 2
The pyraclostrobin-oxine-copper microcapsule suspension-suspending agent disclosed by the embodiment is prepared from pyraclostrobin-oxine-copper serving as an effective component, a capsule wall material, a capsule core solvent, an emulsifier, a thickening agent, a dispersing agent, an antifreezing agent, a preservative, a pH regulator and water. The components comprise the following components in percentage by mass:
pyraclostrobin (B): 5 percent of
And (3) quinoline copper: 25 percent of
Wall material (isocyanate): 7 percent of
Capsule core solvent (rosin-based vegetable oil): 15 percent of
Emulsifier (plant-derived cardanol polyoxyethylene-polyoxypropylene block polyether): 4 percent of
Thickener (xanthan gum): 0.1 percent of
Dispersant (carboxylate): 2.5 percent
Antifreeze (glycerin): 4 percent of
Preservative (benzoic acid): 0.1 percent of
pH regulators (glacial acetic acid and triethanolamine): 1 percent of
Water: 36.3 percent.
The preparation method of the pyraclostrobin-oxine-copper microcapsule suspension-suspending agent comprises the following steps: 5g of pyraclostrobin original drug, 7g of isocyanate, 15g of rosin-based vegetable oil and 4g of plant-derived cardanol polyoxyethylene-polyoxypropylene block polyether are weighed according to the proportion, stirred, and the pH value is adjusted by using glacial acetic acid and triethanolamine to form a microcapsule oil phase. 25g of oxine-copper original drug, 0.1g of xanthan gum, 2.5g of carboxylate, 4g of glycerol, 0.1g of benzoic acid and 36.3g of water are weighed according to the proportion, mixed and stirred, and then added into a sand mill to form a water phase. Mixing and shearing the pyraclostrobin microcapsule oil phase and the oxine-copper suspension system under the shearing action to form the 40% pyraclostrobin-oxine-copper microcapsule suspension-suspending agent.
Example 3
The pyraclostrobin-oxine-copper microcapsule suspension-suspending agent disclosed by the embodiment is prepared from pyraclostrobin-oxine-copper serving as an effective component, a capsule wall material, a capsule core solvent, an emulsifier, a thickening agent, a dispersing agent, an antifreezing agent, a preservative, a pH regulator and water. The components comprise the following components in percentage by mass:
pyraclostrobin (B): 5 percent of
And (3) quinoline copper: 30 percent of
Capsule wall material (melamine resin): 6 percent of
Capsule core solvent (rosin-based vegetable oil): 10 percent of
Emulsifier (plant-derived cardanol polyoxyethylene-polyoxypropylene block polyether): 3 percent of
Thickener (xanthan gum): 0.2 percent of
Dispersing agent (plant source cardanol polyoxyethylene ether phosphate): 3 percent of
Antifreeze (glycerin): 5 percent of
Preservative (benzoic acid): 0.1 percent of
pH regulator: (glacial acetic acid and triethanolamine) 1%
Water: 36.7 percent.
The preparation method of the pyraclostrobin-oxine-copper microcapsule suspension-suspending agent comprises the following steps: 5g of pyraclostrobin original drug, 6g of melamine resin, 10g of rosin-based vegetable oil and 3g of plant-derived cardanol polyoxyethylene-polyoxypropylene block polyether are weighed according to a proportion, stirred, and the pH value is adjusted by using glacial acetic acid and triethanolamine to form a microcapsule oil phase. 30g of oxine-copper original drug, 0.1g of xanthan gum, 3g of plant-derived cardanol polyoxyethylene ether phosphate, 4g of glycerol, 0.1g of benzoic acid and 36.7g of water are weighed according to the proportion, mixed and stirred, and then added into a sand mill to form a water phase. Mixing and shearing the pyraclostrobin microcapsule oil phase and the oxine-copper suspension system under the shearing action to form the 35% pyraclostrobin-oxine-copper microcapsule suspension-suspending agent.
Example 4
The pyraclostrobin-oxine-copper microcapsule suspension-suspending agent disclosed by the embodiment is prepared from pyraclostrobin-oxine-copper serving as an effective component, a capsule wall material, a capsule core solvent, an emulsifier, a thickening agent, a dispersing agent, an antifreezing agent, a preservative, a pH regulator and water. The components comprise the following components in percentage by mass:
pyraclostrobin (B): 10 percent of
And (3) quinoline copper: 25 percent of
Capsule wall materials (gum arabic and gelatin): 6 percent of
Capsule core solvent (rosin-based vegetable oil): 20 percent of
Emulsifier (plant-derived cardanol polyoxyethylene-polyoxypropylene block polyether): 5 percent of
Thickener (xanthan gum): 0.2 percent of
Dispersant (lignosulfonate): 2.5 percent
Antifreeze (glycerin): 4 percent of
Preservative (benzoic acid): 0.1 percent of
pH regulators (glacial acetic acid and triethanolamine): 1 percent of
Water: 26.2 percent.
The preparation method of the pyraclostrobin-oxine-copper microcapsule suspension-suspending agent comprises the following steps: 10g of pyraclostrobin original drug, 6g of gum arabic and gelatin arabic, 20g of rosin-based vegetable oil and 5g of plant source cardanol polyoxyethylene-polyoxypropylene block polyether are weighed according to the proportion and stirred, and the pH value is adjusted by using glacial acetic acid and triethanolamine to form a microcapsule oil phase. 25g of oxine-copper original drug, 0.1g of xanthan gum, 2.5g of lignosulfonate, 4g of glycerol, 0.1g of benzoic acid and 26.2g of water are weighed according to the proportion, mixed and stirred, and then added into a sand mill to form a water phase. Mixing and shearing the pyraclostrobin microcapsule oil phase and the oxine-copper suspension system under the shearing action to form the 20% pyraclostrobin-oxine-copper microcapsule suspension-suspending agent.
Application example 1
The pyraclostrobin-oxine-copper microcapsule suspension-suspending agent prepared in the embodiment is used for carrying out a pharmacodynamic test on phytophthora capsici in a field, 250g/L pyraclostrobin missible oil, 40% oxine-copper suspending agent and 40% oxine-copper-pyraclostrobin suspending agent are used as comparison agents, and the test results are shown in table 1.
TABLE 1 pyraclostrobin-oxine-copper microcapsule suspension-suspending agent for preventing and treating pepper phytophthora blight in field
The experimental results in table 1 show that the pyraclostrobin-oxine-copper microcapsule suspension-suspending agent has the control effect on the pepper phytophthora blight for 1-14 days higher than that of a control medicament. In the aspect of persistent performance, the control effect of the pyraclostrobin-oxine-copper microcapsule suspension-suspending agent after 28 days can reach more than 70%, and the control effect after 42 days is higher than 60%, so that the suspension-suspending agent is completely superior to a control agent.
Application example 2
The pyraclostrobin-oxine-copper microcapsule suspension-suspending agent prepared in the embodiment is used for carrying out a drug effect test on the citrus sand disease in a field, 250g/L pyraclostrobin missible oil, 40% oxine-copper suspending agent and 40% oxine-copper-pyraclostrobin suspending agent are used as comparison agents, and the test results are shown in table 2.
TABLE 2 field Effect of pyraclostrobin-oxine-copper microcapsule suspension-suspending agent on prevention and treatment of Citrus sand-skin disease
The experimental results in table 2 show that the pyraclostrobin-oxine-copper microcapsule suspension-suspending agent has the control effect on the citrus sand skin disease of more than 60% in 1-14 days, and is obviously superior to a control medicament. In the aspect of persistent performance, the control effect of the pyraclostrobin-oxine-copper microcapsule suspension-suspending agent after 28 days is more than 72%, the control effect after 42 days is also higher than 67%, and the control effect is completely superior to that of a control medicament, so that the slow release performance of the preparation is excellent.
Application example 3
The pyraclostrobin-oxine-copper microcapsule suspension-suspending agent prepared in the embodiment is used for carrying out a pesticide effect test on potato late blight in a field, 250g/L pyraclostrobin missible oil, 40% oxine-copper suspending agent and 40% oxine-copper-pyraclostrobin suspending agent are used as comparison reagents, and the test results are shown in table 3.
TABLE 3 field effect of pyraclostrobin-oxine-copper microcapsule suspension-suspending agent on prevention and treatment of potato late blight
The experimental results in table 3 show that the pyraclostrobin-oxine-copper microcapsule suspension-suspending agent has the control effect on the potato late blight higher than 60% in 1-14 days, and is obviously superior to a control medicament. In the aspect of persistent performance, the control effect of the pyraclostrobin-oxine-copper microcapsule suspension-suspending agent after 28 days is more than 69%, the control effect after 42 days is higher than 68%, and the control effect is completely superior to that of a control medicament, so that the slow release performance of the preparation is excellent.
Application example 4
The pyraclostrobin-oxine-copper microcapsule suspension-suspending agent prepared in the embodiment is used for carrying out a pharmacodynamic test on apple ring rot in a field, 250g/L pyraclostrobin missible oil, 40% oxine-copper suspending agent and 40% oxine-copper-pyraclostrobin suspending agent are used as comparison agents, and the test results are shown in table 4.
TABLE 4 pyraclostrobin-oxine-copper microcapsule suspension-suspending agent field effect on prevention and treatment of apple ring rot
The experimental results in table 4 show that the pyraclostrobin-oxine-copper microcapsule suspension-suspending agent has the control effect on apple ring spot of more than 60% in 1-14 days, and is obviously superior to a control medicament. In the aspect of persistent performance, the control effect of the pyraclostrobin-oxine-copper microcapsule suspension-suspending agent after 28 days is more than 73%, the control effect after 42 days is higher than 68%, and the control effect is completely superior to that of a control medicament, so that the slow release performance of the preparation is excellent.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.
Claims (8)
1. The pyraclostrobin-oxine-copper microcapsule suspension-suspending agent is characterized by comprising the following components in percentage by mass: 1-10% of pyraclostrobin, 1-30% of oxine-copper, 6-10% of capsule wall material, 15-20% of capsule core solvent, 1-5% of emulsifier, 0.1-1% of thickener, 3-5% of dispersant, 1-5% of antifreezing agent, 0.1-0.5% of preservative, 1-3% of pH regulator and the balance of water; the emulsifier is cardanol polyoxyethylene-polyoxypropylene block polyether;
the preparation method of the pyraclostrobin-oxine-copper microcapsule suspension-suspending agent comprises the following steps:
s1, weighing pyraclostrobin and a capsule core solvent in proportion, stirring to completely dissolve the pyraclostrobin, adding an emulsifier and a capsule wall material, dissolving, and adjusting the pH value of a sample by using a pH regulator to form a microcapsule oil phase;
s2, weighing the oxine-copper, the thickening agent, the dispersing agent, the antifreezing agent, the preservative and the deionized soft water in proportion, stirring, and then carrying out homogenizing, shearing and sanding to obtain an oxine-copper suspending agent water phase;
s3, mixing the pyraclostrobin microcapsule oil phase and the oxine-copper suspending agent water phase under the action of homogenizing and shearing to obtain the pyraclostrobin-oxine-copper microcapsule suspending-suspending agent.
2. The pyraclostrobin-oxine-copper microcapsule suspension-suspension as claimed in claim 1, wherein the capsule wall material is one or more of gelatin arabic, gum arabic, urea-formaldehyde resin, isocyanate, polyamine and melamine resin.
3. The pyraclostrobin-oxine-copper microcapsule suspension-suspension as claimed in claim 1, wherein the core solvent is a rosin-based vegetable oil.
4. The pyraclostrobin-oxine-copper microcapsule suspension-suspension agent according to claim 1, wherein the thickener is one or more of xanthan gum, white carbon black and magnesium aluminum silicate.
5. The pyraclostrobin-oxine-copper microcapsule suspension-suspension agent as claimed in claim 1, wherein the dispersant is one or more of D-425, carboxylate, cardanol polyoxyethylene ether phosphate, naphthalene sulfonate, alkyl sulfonate, sodium alkyl benzene sulfonate, alkyl naphthalene sulfonate, sodium alkylphenol polyoxyethylene sulfate and lignosulfonate.
6. The pyraclostrobin-oxine-copper microcapsule suspension-suspension agent according to claim 1, wherein the anti-freezing agent is one or more of ethylene glycol and glycerol.
7. The pyraclostrobin-oxine-copper microcapsule suspension-suspension concentrate of claim 1, wherein the preservative is one or more of benzoic acid, sodium benzoate and isothiazolinone.
8. The pyraclostrobin-oxine-copper microcapsule suspension-suspension agent according to claim 1, wherein the pH adjuster is one or more of hydrochloric acid, glacial acetic acid, sodium hydroxide and triethanolamine.
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