CN110896959A - Composite insecticidal and acaricidal nano-water agent containing efficient cyhalothrin and chlorpyrifos and application thereof - Google Patents
Composite insecticidal and acaricidal nano-water agent containing efficient cyhalothrin and chlorpyrifos 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
- A01N53/00—Biocides, pest repellants or attractants, or plant growth regulators containing cyclopropane carboxylic acids or derivatives thereof
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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
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
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- A01N57/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds
- A01N57/10—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds having phosphorus-to-oxygen bonds or phosphorus-to-sulfur bonds
- A01N57/16—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds having phosphorus-to-oxygen bonds or phosphorus-to-sulfur bonds containing heterocyclic radicals
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Abstract
The invention discloses a composite insecticidal and acaricidal nano-water agent containing efficient cyhalothrin and chlorpyrifos, which is prepared by taking the efficient cyhalothrin and the chlorpyrifos as active ingredients, a surfactant and water; the efficient cyhalothrin and the chlorpyrifos are 3-50 wt%, 5-20 wt% of surfactant and the balance of water, and the weight ratio of the efficient cyhalothrin to the chlorpyrifos is 20:1-1: 20. The invention utilizes the nano micelle formed by the surfactant to bear the water-insoluble efficient cyhalothrin and chlorpyrifos, and the effective components exist in the nano water agent as nano particles, thereby being beneficial to the attachment, the distribution and the permeation of the nano water agent on a target and being more resistant to rain wash. The two effective components can generate a synergistic effect, can prevent and control pests and mites on crops, and has the advantages of high pest and mite killing speed, long lasting period and obviously higher prevention and control effect than that of a single agent.
Description
Technical Field
The invention belongs to the field of pesticides, and particularly relates to an insecticidal and acaricidal nano-water agent taking efficient cyhalothrin and chlorpyrifos as main active ingredients and application thereof.
Background
Lambda-cyhalothrin (lambda-cyhalothrin), molecular formula: c23H19ClF3NO3The 3- (2-chloro-3, 3, 3-trifluoropropenyl) -2, 2-dimethylcyclopropanecarboxylic acid α -cyano-3-phenoxybenzyl ester is a high-efficiency, broad-spectrum and quick-acting pyrethroid insecticide and acaricide, mainly has contact poisoning and stomach poisoning effects, has no systemic action, has good effects on various pests such as lepidoptera, coleoptera, hemiptera and the like and other pests, as well as leaf mites, rust mites, gall mites and the like, can be used for controlling cotton bollworms, cabbage caterpillars, cabbage aphids, tea geometrids, tea caterpillars, tea orange mites, leaf gall mites, citrus leaf moths, orange aphids, citrus leaf mites, orange mites, peach fruit borers, pear fruit borers and the like, and can also be used for controlling various surface and public health pests.
Chlorpyrifos (Chlorpyrifos Standard), molecular formula: c9H11Cl3NO3PS. Chemical name: o, O-diethyl-O- (3,5, 6-trichloro-2-pyridyl) thiophosphate. Chlorpyrifos is an acetylcholinesterase inhibitor and belongs to phosphorothioate insecticides. Has the triple functions of stomach toxicity, contact killing and fumigation, and has better control effect on various chewing and piercing-sucking mouthpart pests on rice, wheat, cotton, fruit trees, vegetables and tea trees.
Pesticide varieties containing a single component often have defects in pesticide pest control: the pesticide resistance is easy to generate after continuous use, the insecticidal spectrum is narrow, the comprehensive protection can not be provided for crops, the pesticide cost of farmers is high, and the like. The combination and blending of two or more active ingredients with synergistic effect can improve the control effect, reduce the dosage of the active ingredients, save the cost, slow down the resistance of pests and mites, expand the control spectrum, play a role in controlling multiple pests and reduce the use cost of farmers.
Disclosure of Invention
The invention aims to provide a composite insecticidal and acaricidal nano-water agent containing efficient cyhalothrin and chlorpyrifos, wherein the compounding of the efficient cyhalothrin and the chlorpyrifos in the nano-water agent has an obvious synergistic effect; in addition, creatively discovers that certain surfactants are adopted, a surfactant micelle solubilization technology is adopted, under the condition that organic solvents are not used for assisting dissolution, the nano-scale micelles formed by the surfactants are used for bearing the water-insoluble efficient cyhalothrin and chlorpyrifos, and active ingredients exist in the nano-water agent in the form of nano-scale particles, so that the nano-water agent is more convenient to attach, spread and permeate on a target and is more resistant to rain washing, and the nano-water agent does not contain organic solvents, and is safe and environment-friendly.
The purpose of the invention is realized by the following technical scheme:
a composite insecticidal and acaricidal nano-water agent containing efficient cyhalothrin and chlorpyrifos is prepared by taking efficient cyhalothrin and chlorpyrifos as main active ingredients, a surfactant and water; in the nano water agent, the sum of the weight percentages of chlorpyrifos and lambda-cyhalothrin is 3-50%, the weight percentage of the surfactant is 5-20%, and the balance is water.
The weight ratio of the lambda-cyhalothrin to the chlorpyrifos is 20:1-1:20, preferably 5:1-1: 5.
The sum of the weight percentage of the efficient cyhalothrin and the chlorpyrifos in the nano water agent is preferably 3-21%.
The nano water aqua of the invention can only contain the active ingredients of the efficient cyhalothrin and the chlorpyrifos, other components can also be added into the active ingredients during the use or preparation, and the active ingredients in the insecticidal composition can also exist in the composition in a synergistic effective amount.
The composite insecticidal composition only contains the active ingredients of the lambda-cyhalothrin and the chlorpyrifos, other components can be added into the active ingredients during use or preparation, and the active ingredients in the insecticidal composition can be present in the composition in a synergistic effective amount.
The surfactant is selected from one or more of alkylphenol formaldehyde resin polyoxyethylene ether, styryl phenol polyoxyethylene ether, fatty alcohol polyoxyethylene ether sodium sulfate, tristyryl phenol polyoxyethylene ether phosphate, alkylphenol polyoxyethylene ether phosphate, sodium fatty acid methyl ester sulfonate, alcohol ether succinic acid monoester sulfonate and the like.
The invention also aims to provide a preparation method of the nano water agent containing the efficient cyhalothrin and the chlorpyrifos, which comprises the following steps:
mixing and stirring a raw efficient cyhalothrin and a raw chlorpyrifos with a surfactant at normal temperature (10-35 ℃) to uniformly disperse the efficient cyhalothrin and the chlorpyrifos in the surfactant;
and (2) adding water under the stirring state, and uniformly stirring to form a surfactant micelle solution containing the efficient cyhalothrin and the chlorpyrifos, namely the transparent efficient cyhalothrin and chlorpyrifos nano-water agent.
The efficient cyhalothrin and chlorpyrifos nano water aqua is transparent in appearance, and the average particle size of the surfactant micelle is in a nano level; after entering water, the water-soluble polymer can be quickly dissolved with water to form a completely transparent solution, and the dilution stability is qualified; the nano water agent has stable performance, is still stable after being stored at 0 ℃ for 7 days and stored at 54 ℃ for 14 days, does not precipitate chlorpyrifos, and is convenient to store.
In the step (1), the stirring speed is 60-100 revolutions per second, the stirring time is 0.5h, and technicians can adjust the time so as to ensure that the efficient cyhalothrin and the chlorpyrifos are uniformly dispersed in the surfactant.
In the step (2), the stirring speed is 60-100 r/s, and the stirring is continued for 0.5-1 h after the water is added.
The invention also aims to provide the application of the nano water aqua in preventing and treating pests and mites on fruit trees, cotton and vegetables.
Further, the pests are rice planthoppers, and the pest mites are cotton red spiders.
The nano water aqua can reduce the using amount, delay the generation of drug resistance of pests and mites, improve the control effect, is superior to single-dose use, saves time and labor, saves cost, reduces the pollution to the environment and lightens the burden of farmers.
Compared with the prior art, the invention has the beneficial effects that:
(1) the compound has obvious synergistic effect, and improves the control effect on pests and mites compared with the single dose used alone;
(2) has quick and long-acting effects;
(3) the two effective components are compounded, so that the using amount of the pesticide is reduced, and the production and use cost and the pollution to the environment are reduced;
(4) the resistance of pests and mites to pesticides is delayed, and the effect is obviously higher than that of single dose use of the pesticide.
(5) The invention is a novel dosage form, namely a nano water aqua, has the nano particle size, is more convenient for the attachment, the spreading and the penetration on a target, is more rain-wash resistant, does not contain organic solvent, and is safe and environment-friendly.
Drawings
FIG. 1 shows 4% aqueous solution of lambda-cyhalothrin-chlorpyrifos in example 5.
FIG. 2 shows a 4% aqueous unqualified formulation of lambda-cyhalothrin/chlorpyrifos of comparative example 4.
Detailed Description
The invention is further illustrated but is not in any way limited by the following examples.
Indoor virulence determination
1. Determining toxicity of high-efficiency cyhalothrin, chlorpyrifos and compound sample thereof to Aranea by dipping slide method, repeating for 3 times each treatment, treating for 30 heads each concentration, and performing toxicity determination by LC50Values co-toxicity coefficients (CTC values) were calculated according to the grandsinope method:
single dose of LC50 as standard medicine/single dose of LC 50X 100
Theoretical virulence index (TTI) ═ A virulence index of single agent, x proportion of single agent in mixed agent + B virulence index, x proportion of single agent in mixed agent
Measured virulence index (ATI) ═ standard single dose LC50 value/LC 50 value of the mix × 100
Co-toxicity coefficient (CTC) measured toxicity index (ATI)/Theoretical Toxicity Index (TTI) x 100
Grading co-toxicity coefficients: the mixture has synergistic effect when CTC is greater than 120, is antagonistic when CTC is less than 80, and has additive effect between 80 and 120.
The results are shown in Table 1:
TABLE 1 indoor toxicity determination of high-performance cyhalothrin and chlorpyrifos for cotton red spider
As can be seen from Table 1, the ratio of lambda-cyhalothrin to chlorpyrifos is in the range of 20:1-1:20, the co-toxicity coefficient is more than 120, and the composition has a synergistic effect on the prevention and treatment of the cotton red spider, particularly the composition is 5:1-1:5, the co-toxicity coefficient is over 180, and the synergistic effect is obvious.
2. The toxicity of the high-efficiency cyhalothrin, the chlorpyrifos and the compound sample thereof to the rice planthopper is determined by adopting a test method of soaking leaves firstly and then inoculating insects, the toxicity is repeated three times per treatment, and LC is used50The degree of similarity coefficient was calculated according to the Sun cloud method, and the results are shown in Table 2:
TABLE 2 determination of toxicity of highly effective cyhalothrin and chlorpyrifos mixture to rice planthopper
As can be seen from Table 2, the ratio of efficient cyhalothrin to chlorpyrifos is in the range of 20:1-1:20, the co-toxicity coefficient is more than 120, and the pesticide composition has a synergistic effect on the control of rice planthoppers, and particularly has a toxicity coefficient of 5:1-1:5, the co-toxicity coefficient is above 165, and the synergistic effect is obvious.
Example 1:
the formula is as follows: 20g of high-efficiency cyhalothrin, 1g of chlorpyrifos, 9g of tristyrylphenol polyoxyethylene ether phosphate, 3g of alcohol ether succinic acid monoester sodium sulfonate and water until the weight is 100 g.
The preparation method comprises the following steps: weighing 20 (calculated by effective components, the same below) raw efficient cyhalothrin and 1g (calculated by effective components, the same below) raw chlorpyrifos, mixing with 9g tristyrylphenol polyoxyethylene ether phosphate and 3g alcohol ether succinic acid monoester sodium sulfonate, stirring for 0.5h at the rotation speed of 90 revolutions per second, keeping stirring, adding 67g of water, and continuously stirring for 1h to prepare 21% nano water agent of the efficient cyhalothrin and the chlorpyrifos.
The nano water agent of the embodiment has transparent and yellowish appearance, viscosity of 85mPa & s and average particle size of 15.2 nm.
The preparation has no precipitation phenomenon after cold storage at 0 deg.C for 7 days and hot storage at 54 deg.C for 14 days, and is stable.
The nano water agent can be quickly dissolved with water after entering water to form a completely transparent solution, and the dilution stability is qualified.
Example 2:
the formula is as follows: 10g of efficient cyhalothrin, 1g of chlorpyrifos, 3g of fatty alcohol-polyoxyethylene ether, 2g of tristyrylphenol polyoxyethylene ether phosphate and 3g of styrylphenol polyoxyethylene ether, and water is added to the mixture until the weight is 100 g.
The preparation method is the same as that of the example 1, and the high-efficiency cyhalothrin-chlorpyrifos nano water agent with the concentration of 11 percent is prepared.
The nano water agent of the embodiment has transparent and yellowish appearance, viscosity of 135mPa & s and average particle size of 15 nm.
The preparation has no precipitation phenomenon after cold storage at 0 deg.C for 7 days and hot storage at 54 deg.C for 14 days, and is stable.
The nano water agent can be quickly dissolved with water after entering water to form a completely transparent solution, and the dilution stability is qualified.
Example 3:
the formula is as follows: 5g of efficient cyhalothrin, 1g of chlorpyrifos, 3g of fatty alcohol-polyoxyethylene ether sodium sulfate, 7g of fatty acid methyl ester sodium sulfonate and water until the weight is 100 g.
The preparation method is the same as that of the example 1, and 6 percent of efficient cyhalothrin-chlorpyrifos nano-water agent is prepared.
The nano water agent of the embodiment has transparent and yellowish appearance, viscosity of 145mPa & s and average particle size of 18.5 nm.
The preparation has no precipitation phenomenon after cold storage at 0 deg.C for 7 days and hot storage at 54 deg.C for 14 days, and is stable.
The nano water agent can be quickly dissolved with water after entering water to form a completely transparent solution, and the dilution stability is qualified.
Example 4:
the formula is as follows: 2g of efficient cyhalothrin, 1g of chlorpyrifos, 3g of fatty alcohol-polyoxyethylene ether sodium sulfate, 4g of alkylphenol formaldehyde resin polyoxyethylene ether and water until the weight is 100 g.
The preparation method is the same as that of the example 1, and 3 percent of efficient cyhalothrin-chlorpyrifos nano-water agent is prepared.
The nano water agent of the embodiment has transparent and yellowish appearance, viscosity of 170 mPa.s and average particle size of 17.4 nm.
The preparation has no precipitation phenomenon after cold storage at 0 deg.C for 7 days and hot storage at 54 deg.C for 14 days, and is stable.
The nano water agent can be quickly dissolved with water after entering water to form a completely transparent solution, and the dilution stability is qualified.
Example 5:
the formula is as follows: 2g of efficient cyhalothrin, 2g of chlorpyrifos, 2g of tristyrylphenol polyoxyethylene ether phosphate, 3g of alkylphenol polyoxyethylene ether phosphate and water until the weight is 100 g.
The preparation method is the same as that of the example 1, and 4 percent of high-efficiency cyhalothrin-chlorpyrifos nano water agent is prepared.
The nano water agent of the embodiment has transparent and yellowish appearance, viscosity of 125mPa & s and average particle size of 16.5 nm.
The preparation has no precipitation phenomenon after cold storage at 0 deg.C for 7 days and hot storage at 54 deg.C for 14 days, and is stable.
The nano water agent can be quickly dissolved with water after entering water to form a completely transparent solution, and the dilution stability is qualified.
Example 6:
the formula is as follows: 3g of efficient cyhalothrin, 6g of chlorpyrifos, 3g of styrylphenol polyoxyethylene ether, 3g of fatty acid methyl ester sodium sulfonate and water until the weight is 100 g.
The preparation method is the same as that of the example 1, and 9 percent of efficient cyhalothrin-chlorpyrifos nano-water agent is prepared.
The nano water agent of the embodiment has transparent and yellowish appearance, viscosity of 157 mPas and average particle size of 18 nm.
The preparation has no precipitation phenomenon after cold storage at 0 deg.C for 7 days and hot storage at 54 deg.C for 14 days, and is stable.
The nano water agent can be quickly dissolved with water after entering water to form a completely transparent solution, and the dilution stability is qualified.
Example 7:
the formula is as follows: 2g of lambda-cyhalothrin, 10g of chlorpyrifos, 6g of styrylphenol polyoxyethylene ether, 5g of lauramidopropyl hydroxysultaine and water until the weight is 100 g.
The preparation method is the same as that of the example 1, and the high-efficiency cyhalothrin chlorpyrifos nano water agent with the concentration of 12 percent is prepared.
The nano water agent of the embodiment has transparent and yellowish appearance, viscosity of 110 mPas and average particle size of 22 nm.
The preparation has no precipitation phenomenon after cold storage at 0 deg.C for 7 days and hot storage at 54 deg.C for 14 days, and is stable.
The nano water agent can be quickly dissolved with water after entering water to form a completely transparent solution, and the dilution stability is qualified.
Example 8:
the formula is as follows: 1g of high-efficiency cyhalothrin, 10g of chlorpyrifos, 4g of styrylphenol polyoxyethylene ether, 5g of alcohol ether succinic acid monoester sodium sulfonate, 3g of fatty alcohol-polyoxyethylene ether sodium sulfate and water until the weight is 100 g.
The preparation method is the same as that of the example 1, and the high-efficiency cyhalothrin-chlorpyrifos nano water agent with the concentration of 11 percent is prepared.
The nano water agent of the embodiment has transparent and yellowish appearance, viscosity of 105 mPas and average particle size of 20 nm.
The preparation has no precipitation phenomenon after cold storage at 0 deg.C for 7 days and hot storage at 54 deg.C for 14 days, and is stable.
The nano water agent can be quickly dissolved with water after entering water to form a completely transparent solution, and the dilution stability is qualified.
Example 9:
the formula is as follows: 0.5g of efficient cyhalothrin, 10g of chlorpyrifos, 3g of styrylphenol polyoxyethylene ether and 3g of alkylphenol formaldehyde resin polyoxyethylene ether, and water is added to 100 g.
The preparation method is the same as that of the example 1, and the 10.5 percent efficient cyhalothrin chlorpyrifos nano water agent is prepared.
The nano water agent of the embodiment has transparent and yellowish appearance, viscosity of 90mPa & s and average particle size of 24 nm.
The preparation has no precipitation phenomenon after cold storage at 0 deg.C for 7 days and hot storage at 54 deg.C for 14 days, and is stable.
The nano water agent can be quickly dissolved with water after entering water to form a completely transparent solution, and the dilution stability is qualified.
Comparative examples 1 to 4
The water aqua is prepared by adopting the commonly used auxiliary agent (wetting agent) for preparing the water aqua at present, and the specific formula is shown in table 3.
TABLE 3 formulations of comparative examples 1 to 4
The preparation method is the same as example 1.
According to the formulas of the comparative example 1 and the comparative example 2, the high-efficiency cyhalothrin and the chlorpyrifos can not be completely dissolved in water and can not form qualified aqueous solution under the condition of adding the auxiliary agent.
According to the formulas of the comparative example 3 and the comparative example 4, the aqueous solution can be prepared at normal temperature (10-35 ℃), but when the aqueous solution is placed at low temperature (below 0 ℃), raw pesticides of the high-efficiency cyhalothrin and the chlorpyrifos are continuously separated out and cannot be recovered after the temperature is raised. It is demonstrated that the surfactant used in the conventional aqueous solution other than the surfactant or surfactant composition of the present invention could not be used to prepare an acceptable aqueous solution of lambda-cyhalothrin-chlorpyrifos.
Example 10: comparison of biological Activity
Test of field drug effect
Reagent to be tested: the lambda-cyhalothrin and chlorpyrifos compound nano water aqua of the embodiment 1 to the embodiment 9.
The control object is: spider mites of the Gossypium hirsutum.
The test method comprises the following steps: adopting normal field dosage (effective component), setting three times of repetition of dosage treatment, repeatedly adopting random block arrangement, and setting area of each repetition to be 30m2The experiment was carried out using a knapsack sprayer to spray the entire plant of cotton. Investigating population base before application, investigating residual live insect number 3 days, 7 days, 14 days and 30 days after application, and calculating the control effect according to the following method:
percent reduction rate (%) of population (number of insects before application-number of insects after application)/number of insects before application × 100
Correction control effect (%) - (treatment area oral cavity decline rate-control area oral cavity decline rate)/(100-control area oral cavity decline rate before and after control) × 100
The results of the treatment are shown in Table 4:
table 4: results of field test of efficient cyhalothrin-chlorpyrifos mixture on cotton red spiders
The field efficacy results show that the efficient cyhalothrin-chlorpyrifos composition has excellent control effect on the cotton red spider and long lasting period.
Test for field drug effect
Reagent to be tested: the lambda-cyhalothrin and chlorpyrifos compound nano water aqua of the embodiment 1 to the embodiment 9.
The control object is: rice planthoppers.
The test method comprises the following steps: adopting normal field dosage (effective component), setting three times of repetition of dosage treatment, repeatedly adopting random block arrangement, and setting area of each repetition to be 50m2And a knapsack sprayer is adopted for spraying in the test. Investigating population base before application, investigating residual live insect number 3 days, 7 days, 14 days and 30 days after application, and calculating the control effect according to the following method:
percent reduction rate (%) of population (number of insects before application-number of insects after application)/number of insects before application × 100
Correction control effect (%) - (treatment area oral cavity decline rate-control area oral cavity decline rate)/(100-control area oral cavity decline rate before and after control) × 100
Table 5: results of field test of efficient cyhalothrin-chlorpyrifos mixture on rice planthopper
The field efficacy results show that the efficient cyhalothrin-chlorpyrifos composition has excellent control effect on rice planthopper and long lasting period.
Claims (9)
1. A composite nano water agent for killing insects and mites containing efficient cyhalothrin and chlorpyrifos is characterized in that the nano water agent is prepared by taking the efficient cyhalothrin and the chlorpyrifos as active ingredients, a surfactant and water; in the nano water agent, the weight percentage content of the efficient cyhalothrin and the chlorpyrifos is 3-50%, the weight percentage content of the surfactant is 5-20%, and the balance is water.
2. The nano water aqua according to claim 1, wherein the weight percentage of the lambda-cyhalothrin and the chlorpyrifos is 3-21%.
3. The nano water aqua according to claim 1, wherein the weight ratio of the lambda-cyhalothrin to the chlorpyrifos is 20:1-1: 20.
4. The nano water aqua according to claim 1, wherein the weight ratio of the lambda-cyhalothrin to the chlorpyrifos is 5:1-1: 5.
5. The nano-water agent as claimed in claim 1, wherein the surfactant is selected from one or more of alkylphenol formaldehyde resin polyoxyethylene ether, styrylphenol polyoxyethylene ether, sodium fatty alcohol polyoxyethylene ether sulfate, tristyrylphenol polyoxyethylene ether phosphate, alkylphenol polyoxyethylene ether phosphate, sodium fatty acid methyl ester sulfonate, and sodium alcohol ether succinic acid monoester sulfonate.
6. The method for preparing the nano water agent according to claim 1, wherein the method comprises the following steps:
mixing and stirring a raw efficient cyhalothrin and a raw chlorpyrifos with a surfactant at normal temperature to uniformly disperse the efficient cyhalothrin and the chlorpyrifos in the surfactant;
and (2) adding water under the stirring state, and uniformly stirring to form a surfactant micelle solution containing the efficient cyhalothrin and the chlorpyrifos, namely the transparent efficient cyhalothrin and chlorpyrifos nano-water agent.
7. The method for preparing the nano water aqua according to claim 6 is characterized in that in the step (1) and the step (2), the stirring speed is 60-100 revolutions per second.
8. The use of the nano water aqua of claim 1 in controlling pests and mites on fruit trees, cotton and vegetables.
9. The use according to claim 8, characterized in that the pests are rice planthoppers and the pest mites are spider mites.
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| CN112120039A (en) * | 2020-10-28 | 2020-12-25 | 泰兴市新宏阳化工有限公司 | Cyhalothrin and chlorpyrifos mixed pesticide composition |
| CN112273393A (en) * | 2020-10-28 | 2021-01-29 | 泰兴市新宏阳化工有限公司 | Cyhalothrin and chlorpyrifos mixture |
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| WO2021093268A1 (en) * | 2019-11-12 | 2021-05-20 | 南京华洲药业有限公司 | High-efficiency cyhalothrin nano aqueous solution, preparation method therefor and application thereof |
| WO2021093270A1 (en) * | 2019-11-13 | 2021-05-20 | 南京华洲药业有限公司 | Compound insecticidal and acaricidal nano aqueous formulation containing fenpropathrin and emamectin benzoate, and use thereof |
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2019
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| WO2021093266A1 (en) * | 2019-11-11 | 2021-05-20 | 南京华洲药业有限公司 | Compound insecticidal and acaricidal nano aqueous formulation containing lambda-cyhalothrin and emamectin benzoate, and use thereof |
| WO2021093267A1 (en) * | 2019-11-12 | 2021-05-20 | 南京华洲药业有限公司 | Composite insecticidal and acaricidal nano-aqueous agent containing fenpropathrin and chlorpyrifos, and preparation method therefor and use thereof |
| WO2021093268A1 (en) * | 2019-11-12 | 2021-05-20 | 南京华洲药业有限公司 | High-efficiency cyhalothrin nano aqueous solution, preparation method therefor and application thereof |
| WO2021093269A1 (en) * | 2019-11-13 | 2021-05-20 | 南京华洲药业有限公司 | Nano aqueous agent comprising prochloraz and processing method therefor |
| WO2021093270A1 (en) * | 2019-11-13 | 2021-05-20 | 南京华洲药业有限公司 | Compound insecticidal and acaricidal nano aqueous formulation containing fenpropathrin and emamectin benzoate, and use thereof |
| CN112120039A (en) * | 2020-10-28 | 2020-12-25 | 泰兴市新宏阳化工有限公司 | Cyhalothrin and chlorpyrifos mixed pesticide composition |
| CN112273393A (en) * | 2020-10-28 | 2021-01-29 | 泰兴市新宏阳化工有限公司 | Cyhalothrin and chlorpyrifos mixture |
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