Plant source agricultural insecticidal synergistic adjuvant, preparation method and application thereof

Abstract

This invention relates to the field of pesticide adjuvant technology, and discloses a plant-derived agricultural insecticide synergist, its preparation method, and its application. The plant-derived agricultural insecticide synergist is composed of the following raw materials: cinnamaldehyde, eucalyptol, caryophyllene, sophora flavescens extract, vanillin, vanillyl butyl ether, ethyl maltol, castor oil polyoxyethylene ether EL-40, fatty alcohol polyoxyethylene ether AEO-9, xanthan gum, and deionized water. The sophora flavescens extract contains ≥10% matrine. The plant-derived agricultural insecticide synergist provided by this invention can be mixed with chemical pesticides to enhance their efficacy during agricultural insecticide application, significantly improving control effects. It can improve the wettability, spreading, and permeability of pesticide solutions, reduce surface tension, and make the pesticide solution easier to spread and adhere to the target surface, thereby improving the physicochemical properties of the pesticide solution and increasing agricultural utilization. The components such as sophora flavescens extract, cinnamaldehyde, eucalyptol, and caryophyllene can form a synergistic effect with chemical pesticides, improving the agricultural insecticide effect.

Description

Technical Field

[0001] This invention relates to the field of pesticide adjuvant technology, and in particular to a plant-derived agricultural insecticide synergist, its preparation method, and its application. Background Technology

[0002] The prevention and control of agricultural pests and diseases is a crucial link in ensuring food security and agricultural output. For a long time, chemical pesticides have dominated agricultural production due to their high efficiency, rapid action, and broad spectrum. However, the long-term, large-scale, and singular use of chemical pesticides easily leads to problems such as pest resistance, pesticide residues, and the resurgence of environmental and non-target organisms. In particular, many pests have developed resistance to traditional chemical insecticides such as pyrethroids and organophosphates, forcing farmers to continuously increase pesticide dosages, thereby further exacerbating environmental and agricultural safety risks.

[0003] To address the aforementioned issues, existing technologies typically involve adding insecticidal adjuvants to improve the physicochemical properties of the pesticide solution. These adjuvants enhance the wettability, spreading properties, and penetration of the solution, thereby reducing the dosage of the main pesticide and improving control efficacy. Currently, most widely used insecticidal adjuvants on the market are chemically synthesized, including organosilicon surfactants, mineral oils, vegetable oil emulsions, and specific alkylphenol polyoxyethylene ether emulsifiers. While these chemical adjuvants can provide some synergistic effect, they still have shortcomings in practical application.

[0004] Specifically, most chemical adjuvants are difficult to degrade in the natural environment, and long-term use can easily cause soil and water pollution, disrupting the ecological balance of farmland. Some chemical adjuvants, when used improperly, can easily cause phytotoxicity to plant leaves, affecting photosynthesis and fruit quality. Furthermore, synthetic adjuvants generally lack biological activity and are mostly used as physical adhesion agents, making it difficult to fundamentally assist insecticidal components in overcoming the complex physiological defenses of pests.

[0005] With the development of green agriculture, the development of pesticides using plant-derived extracts has become a research hotspot. Most existing publicly available plant-derived technologies directly use plant extracts as active ingredients to create plant-derived insecticides. However, plant-derived agents typically have limitations such as slow onset of action, short duration of effect, and unstable control over specific highly resistant pests. Furthermore, the relatively high cost of some extracts limits their widespread application in agricultural production.

[0006] Therefore, how to use plant extracts as insecticidal adjuvants rather than as insecticidal agents alone, and how to obtain agricultural insecticidal adjuvants with both surface activity and biosynergistic activity through relatively simple and stable preparation processes, so as to improve the control effect of existing insecticides, reduce the amount of chemical pesticides used, and meet the needs of green and safe agricultural production, has become a technical problem that needs to be solved in this field. Summary of the Invention

[0007] The purpose of this invention is to address the shortcomings of existing technologies by proposing a plant-derived agricultural insecticide synergist, its preparation method, and its application.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A plant-derived agricultural insecticide synergist is composed of the following raw materials in parts by weight: 3-12 parts cinnamaldehyde, 2-8 parts eucalyptol, 1-6 parts caryophyllene, 2-10 parts sophora flavescens extract, 0.1-1 part vanillin, 0.5-2 parts vanillyl butyl ether, 0.05-0.5 parts ethyl maltol, 4-12 parts castor oil polyoxyethylene ether EL-40, 2-6 parts fatty alcohol polyoxyethylene ether AEO-9, 0.1-0.3 parts xanthan gum, and deionized water, wherein the deionized water is made up to 100 parts, and the sophora flavescens extract contains ≥10% matrine.

[0010] A method for preparing a plant-derived agricultural insecticide synergist as described above includes the following steps:

[0011] Step 1: Mix cinnamaldehyde, eucalyptol, caryophyllene, vanillin and vanillyl butyl ether according to the stated weight parts, and stir until completely dissolved to obtain a uniform and transparent oil phase;

[0012] Step 2: Add castor oil polyoxyethylene ether EL-40, fatty alcohol polyoxyethylene ether AEO-9 and xanthan gum to a portion of deionized water and stir until fully dissolved to obtain an emulsion base solution;

[0013] Step 3: Under continuous stirring, slowly add the uniform and transparent oil phase to the emulsion base liquid and stir to obtain a mixed system;

[0014] Step 4: Dissolve the Sophora flavescens extract and ethyl maltol weighed according to the specified weight proportions in another portion of deionized water, add them to the mixing system, and stir to obtain a mixture.

[0015] Step 5: The mixture is processed through a high-shear emulsifier to obtain a uniform and stable water-based insecticide adjuvant.

[0016] Preferably, in step 2, the amount of deionized water used is 70% of the total amount of deionized water used in preparing the plant-derived agricultural insecticide synergist, and in step 4, the other part of deionized water is the deionized water other than the deionized water used in step 2 in the total amount of deionized water.

[0017] Preferably, in step 3, after slowly adding the uniform and transparent oil phase to the emulsion base liquid, the mixture is stirred at 500~800 r / min for 10~20 minutes to obtain a mixed system.

[0018] Preferably, in step 4, after adding the Sophora flavescens extract dissolved in the other portion of deionized water and ethyl maltol to the mixing system, the mixture is stirred for another 5 to 10 minutes to obtain the mixture.

[0019] Preferably, in step 5, the high-shear emulsifier operates at a speed of 10,000 to 15,000 r / min and a processing time of 20 to 30 minutes.

[0020] The application of the plant-derived agricultural insecticide synergist as described above in agricultural insecticide application involves mixing the plant-derived agricultural insecticide synergist with chemical pesticides, diluting it with water, and then spraying it evenly.

[0021] Preferably, the dosage of the plant-derived agricultural insecticide synergist is 50-150 grams per mu, and the amount of water used is 15-30 kilograms per mu.

[0022] Preferably, the chemical pesticide is one of abamectin, lambda-cyhalothrin, imidacloprid, or emamectin benzoate.

[0023] Preferably, the plant-derived agricultural insecticide synergist is mixed with chemical pesticides in a tank using a two-stage dilution method before spraying.

[0024] Preferably, the agricultural insecticide includes the control of cotton aphids or diamondback moths.

[0025] The beneficial effects of this invention are as follows:

[0026] The plant-derived agricultural insecticide synergist provided by this invention is a compound of components including cinnamaldehyde, eucalyptol, caryophyllene, sophora flavescens extract, vanillin, vanillyl butyl ether, and ethyl maltol, combined with castor oil polyoxyethylene ether EL-40, fatty alcohol polyoxyethylene ether AEO-9, xanthan gum, and deionized water to form a homogeneous and stable water-based insecticide adjuvant. This plant-derived agricultural insecticide synergist can be mixed with chemical pesticides to exert a synergistic effect during agricultural insecticide application, significantly improving the control effect.

[0027] The plant-derived agricultural insecticide synergist provided by this invention possesses both physical synergistic effects and biological activity. On one hand, the plant-derived agricultural insecticide synergist can improve the wettability, spreading and penetrability of the pesticide solution, reduce the surface tension of the pesticide solution, and make it easier for the pesticide solution to spread and adhere to the target surface, thereby improving the physicochemical properties of the pesticide solution and increasing agricultural utilization. On the other hand, components such as Sophora flavescens extract, cinnamaldehyde, eucalyptol, and caryophyllene can form a synergistic effect with chemical pesticides, improving the insecticidal effect in agriculture.

[0028] The plant-derived agricultural insecticide synergist provided by this invention can improve the control effect while reducing the amount of chemical pesticides used. Because the plant-derived agricultural insecticide synergist enhances the ability of the pesticide solution to spread, penetrate, and contact the target, and exerts a synergistic effect through its plant-derived active components, it helps to significantly reduce pesticide usage during agricultural insecticide application and delays the development of pesticide resistance in pests.

[0029] The plant-derived agricultural insecticide synergist provided by this invention uses plant-derived active ingredients, which, unlike traditional chemically synthesized insecticide adjuvants, makes it green, safe, and environmentally compatible. This plant-derived agricultural insecticide synergist can reduce the environmental pressure that may result from the long-term use of chemically synthesized adjuvants, meeting the requirements of green agriculture for the safety and environmental friendliness of pesticide adjuvants.

[0030] The plant-derived agricultural insecticide synergist provided by this invention is prepared through stirring, emulsification, and high-shear emulsification. The resulting product is a homogeneous and stable water-based insecticide synergist with high stability. This plant-derived agricultural insecticide synergist can be mixed with chemical pesticides in a tank using a two-stage dilution method before spraying. It has wide compatibility, low usage threshold, and is easy to promote and apply in agricultural production. Detailed Implementation

[0031] To provide a clearer understanding of the technical features, objectives, and beneficial effects of this invention, the technical solution of this invention is described in detail below, but this should not be construed as limiting the scope of implementation of this invention. Unless otherwise specified, the methods used in this invention are conventional methods in this technical field. In this invention, materials, reagents, or instruments whose manufacturers are not specified are all conventional products that can be purchased commercially.

[0032] In one embodiment, the present invention provides a plant-derived agricultural insecticide synergist composed of the following raw materials in parts by weight: 3-12 parts cinnamaldehyde, 2-8 parts eucalyptol, 1-6 parts caryophyllene, 2-10 parts sophora flavescens extract, 0.1-1 part vanillin, 0.5-2 parts vanillyl butyl ether, 0.05-0.5 parts ethyl maltol, 4-12 parts castor oil polyoxyethylene ether EL-40, 2-6 parts fatty alcohol polyoxyethylene ether AEO-9, 0.1-0.3 parts xanthan gum, and deionized water, wherein the deionized water is made up to 100 parts, and the sophora flavescens extract contains ≥10% matrine.

[0033] In one embodiment, the present invention provides a method for preparing the above-mentioned plant-derived agricultural insecticide synergist, comprising the following steps:

[0034] Step 1: Mix cinnamaldehyde, eucalyptol, caryophyllene, vanillin and vanillyl butyl ether according to the stated weight parts, and stir until completely dissolved to obtain a uniform and transparent oil phase;

[0035] Step 2: Add castor oil polyoxyethylene ether EL-40, fatty alcohol polyoxyethylene ether AEO-9 and xanthan gum to a portion of deionized water and stir until fully dissolved to obtain an emulsion base solution;

[0036] Step 3: Under continuous stirring, slowly add the uniform and transparent oil phase to the emulsion base liquid and stir to obtain a mixed system;

[0037] Step 4: Dissolve the Sophora flavescens extract and ethyl maltol weighed according to the specified weight proportions in another portion of deionized water, add them to the mixing system, and stir to obtain a mixture.

[0038] Step 5: The mixture is processed through a high-shear emulsifier to obtain a uniform and stable water-based insecticide adjuvant.

[0039] In a preferred embodiment of the present invention, in step 2, the amount of deionized water used is 70% of the total amount of deionized water used in preparing the plant-derived agricultural insecticide synergist, and in step 4, the other part of deionized water is the deionized water other than the deionized water used in step 2 in the total amount of deionized water.

[0040] In a preferred embodiment of the present invention, in step 3, after the uniform and transparent oil phase is slowly added to the emulsion base liquid, it is stirred at 500~800 r / min for 10~20 minutes to obtain a mixed system.

[0041] In a preferred embodiment of the present invention, in step 4, the Sophora flavescens extract dissolved in the other part of deionized water and ethyl maltol are added to the mixture, and the mixture is stirred for 5 to 10 minutes to obtain the mixture.

[0042] In a preferred embodiment of the present invention, in step 5, the high-shear emulsifier operates at a speed of 10,000 to 15,000 r / min and the processing time is 20 to 30 minutes.

[0043] In one embodiment, the present invention proposes the application of the plant-derived agricultural insecticide synergist as described above in agricultural insecticide application, wherein the plant-derived agricultural insecticide synergist is mixed with chemical pesticides, diluted with water, and then sprayed evenly.

[0044] In a preferred embodiment of the present invention, the dosage of the plant-derived agricultural insecticide synergist is 50-150 grams per mu, and the amount of water used is 15-30 kilograms per mu.

[0045] In a preferred embodiment of the present invention, the chemical pesticide is one of abamectin, lambda-cyhalothrin, imidacloprid, or emamectin benzoate.

[0046] In a preferred embodiment of the present invention, the plant-derived agricultural insecticide synergist is mixed with chemical pesticides in a tank using a two-stage dilution method before spraying.

[0047] As a preferred embodiment of the present invention, the agricultural insecticide includes the control of cotton aphids or diamondback moths.

[0048] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0049] Example 1: By weight, it is composed of the following raw materials: 3 parts cinnamaldehyde, 2 parts eucalyptol, 1 part caryophyllene, 2 parts sophora flavescens extract, 0.1 parts vanillin, 0.5 parts vanillyl butyl ether, 0.05 parts ethyl maltol, 4 parts castor oil polyoxyethylene ether EL-404, 2 parts fatty alcohol polyoxyethylene ether AEO-9, 0.1 parts xanthan gum, and 85.25 parts deionized water. The sophora flavescens extract contains ≥10% matrine.

[0050] The plant-derived agricultural insecticide synergist of this embodiment was prepared according to the following method.

[0051] Mix 3 parts cinnamaldehyde, 2 parts eucalyptol, 1 part caryophyllene, 0.1 parts vanillin and 0.5 parts vanillyl butyl ether, and stir until completely dissolved to obtain a uniform and transparent oil phase.

[0052] Four parts of castor oil polyoxyethylene ether EL-40, two parts of fatty alcohol polyoxyethylene ether AEO-9, and 0.1 parts of xanthan gum were added to a portion of deionized water and stirred until fully dissolved to obtain an emulsion base solution. The amount of the portion of deionized water was 70% of the total amount of deionized water used in the preparation of the plant-derived agricultural insecticide synergist, and the other portion of deionized water was the deionized water other than that used in the preparation of the emulsion base solution.

[0053] Under continuous stirring, the uniform and transparent oil phase is slowly added to the emulsion base liquid, and stirred at 500~800 r / min for 10~20 minutes to obtain a mixed system.

[0054] Dissolve 2 parts of Sophora flavescens extract and 0.05 parts of ethyl maltol in the other part of deionized water, then add them to the mixture and continue stirring for 5-10 minutes to obtain a mixture.

[0055] The mixture is processed by a high-shear emulsifier at a speed of 10,000 to 15,000 r / min for 20 to 30 minutes to obtain a uniform and stable water-based insecticide adjuvant.

[0056] Example 2: By weight, it is composed of the following raw materials: 7.5 parts cinnamaldehyde, 5 parts eucalyptol, 3.5 parts caryophyllene, 6 parts sophora flavescens extract, 0.55 parts vanillin, 1.25 parts vanillyl butyl ether, 0.275 parts ethyl maltol, 8 parts castor oil polyoxyethylene ether EL-40, 4 parts fatty alcohol polyoxyethylene ether AEO-9, 0.2 parts xanthan gum, and 63.725 parts deionized water. The sophora flavescens extract contains ≥10% matrine.

[0057] The plant-derived agricultural insecticide synergist of this embodiment was prepared according to the following method.

[0058] Mix 7.5 parts of cinnamaldehyde, 5 parts of eucalyptol, 3.5 parts of caryophyllene, 0.55 parts of vanillin, and 1.25 parts of vanillyl butyl ether, and stir until completely dissolved to obtain a uniform and transparent oil phase.

[0059] Eight parts of castor oil polyoxyethylene ether EL-40, four parts of fatty alcohol polyoxyethylene ether AEO-9, and 0.2 parts of xanthan gum were added to a portion of deionized water and stirred until fully dissolved to obtain an emulsion base solution. The amount of the portion of deionized water was 70% of the total amount of deionized water used in the preparation of the plant-derived agricultural insecticide synergist, and the other portion of deionized water was the deionized water other than that used in the preparation of the emulsion base solution.

[0060] Under continuous stirring, the uniform and transparent oil phase is slowly added to the emulsion base liquid, and stirred at 500~800 r / min for 10~20 minutes to obtain a mixed system.

[0061] Dissolve 6 parts of Sophora flavescens extract and 0.275 parts of ethyl maltol in the other part of deionized water, then add them to the mixture and continue stirring for 5-10 minutes to obtain a mixture.

[0062] The mixture is processed by a high-shear emulsifier at a speed of 10,000 to 15,000 r / min for 20 to 30 minutes to obtain a uniform and stable water-based insecticide adjuvant.

[0063] Example 3: By weight, it is composed of the following raw materials: 12 parts cinnamaldehyde, 8 parts eucalyptol, 6 parts caryophyllene, 10 parts sophora flavescens extract, 1 part vanillin, 2 parts vanillyl butyl ether, 0.5 parts ethyl maltol, 12 parts castor oil polyoxyethylene ether EL-40, 6 parts fatty alcohol polyoxyethylene ether AEO-9, 0.3 parts xanthan gum, and 42.2 parts deionized water. The sophora flavescens extract contains ≥10% matrine.

[0064] The plant-derived agricultural insecticide synergist of this embodiment was prepared according to the following method.

[0065] Mix 12 parts of cinnamaldehyde, 8 parts of eucalyptol, 6 parts of caryophyllene, 1 part of vanillin and 2 parts of vanillyl butyl ether, and stir until completely dissolved to obtain a uniform and transparent oil phase.

[0066] 12 parts of castor oil polyoxyethylene ether EL-40, 6 parts of fatty alcohol polyoxyethylene ether AEO-9, and 0.3 parts of xanthan gum were added to a portion of deionized water and stirred until fully dissolved to obtain an emulsion base solution. The amount of the portion of deionized water was 70% of the total amount of deionized water used in the preparation of the plant-derived agricultural insecticide synergist, and the other portion of deionized water was the deionized water other than that used in the preparation of the emulsion base solution.

[0067] Under continuous stirring, the uniform and transparent oil phase is slowly added to the emulsion base liquid, and stirred at 500~800 r / min for 10~20 minutes to obtain a mixed system.

[0068] Dissolve 10 parts of Sophora flavescens extract and 0.5 parts of ethyl maltol in the other part of deionized water, then add them to the mixture and continue stirring for 5-10 minutes to obtain a mixture.

[0069] The mixture is processed by a high-shear emulsifier at a speed of 10,000 to 15,000 r / min for 20 to 30 minutes to obtain a uniform and stable water-based insecticide adjuvant.

[0070] To further illustrate the application effect of the above-mentioned plant-derived agricultural insecticide synergist in agricultural insecticide control, synergistic effect tests on the control of cotton aphids and field trials on the control of diamondback moths were conducted using the plant-derived agricultural insecticide synergist of this invention. Specific tests are as follows:

[0071] Experimental Example 1: A synergistic effect test was conducted on the control of cotton aphids using the plant-derived agricultural insecticide synergist prepared in the above-described embodiments.

[0072] The experiment included four treatment groups: Treatment group 11 was 10% imidacloprid wettable powder, with a recommended dosage of 20 g / mu; Treatment group 12 was a single agent of plant-derived agricultural insecticide synergist, with a dosage of 100 ml / mu; Treatment group 13 was a mixture of plant-derived agricultural insecticide synergist and half-dosage imidacloprid, with the dosage of plant-derived agricultural insecticide synergist being 50 ml / mu and the dosage of imidacloprid being 10 g / mu; Treatment group 14 was a blank control, treated with water.

[0073] The number of live aphids was investigated 3 and 7 days after application. The results showed that treatment group 13 had a control efficacy of 91.5% 3 days after application and 93.8% 7 days after application; treatment group 11 had a control efficacy of 78.2% 3 days after application and 74.6% 7 days after application. These results indicate that when plant-derived agricultural insecticide adjuvants are mixed with half-strength imidacloprid, the control efficacy against cotton aphids can still be improved while reducing the amount of imidacloprid used, and no phytotoxicity symptoms were observed.

[0074] Experimental Example 2: A field trial was conducted to control diamondback moth using the plant-derived agricultural insecticide synergist prepared in the above-described embodiments.

[0075] The experiment was set up with three treatment groups: treatment group 21 was 5% abamectin EC, with a recommended dosage of 30 ml / mu; treatment group 22 was a mixture of plant-derived agricultural insecticide synergist and half a dose of abamectin, with the dosage of plant-derived agricultural insecticide synergist being 80 ml / mu and the dosage of abamectin being 15 ml / mu; and treatment group 23 was a water control.

[0076] The number of live insects was assessed 3 and 7 days after application. The results showed that treatment group 22 had a control efficacy of 87.2% 3 days after application and 89.5% 7 days after application; treatment group 21 had a control efficacy of 70.1% 3 days after application and 68.3% 7 days after application. These results indicate that the combination of plant-derived agricultural insecticide adjuvants and half-strength abamectin can improve the control efficacy against diamondback moth.

[0077] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A plant-derived agricultural insecticide synergist, characterized in that, The product is composed of the following raw materials in parts by weight: 3-12 parts cinnamaldehyde, 2-8 parts eucalyptol, 1-6 parts caryophyllene, 2-10 parts sophora flavescens extract, 0.1-1 part vanillin, 0.5-2 parts vanillyl butyl ether, 0.05-0.5 parts ethyl maltol, 4-12 parts castor oil polyoxyethylene ether EL-40, 2-6 parts fatty alcohol polyoxyethylene ether AEO-9, 0.1-0.3 parts xanthan gum, and deionized water, wherein the deionized water is made up to 100 parts, and the sophora flavescens extract contains ≥10% matrine.

2. A method for preparing a plant-derived agricultural insecticide synergist as described in claim 1, characterized in that, Includes the following steps: Step 1: Cinnamaldehyde, eucalyptol, caryophyllene, vanillin and vanillyl butyl ether are mixed according to the weight parts described in claim 1 and stirred until completely dissolved to obtain a uniform and transparent oil phase; Step 2: Add castor oil polyoxyethylene ether EL-40, fatty alcohol polyoxyethylene ether AEO-9 and xanthan gum to a portion of deionized water and stir until fully dissolved to obtain an emulsion base solution; Step 3: Under continuous stirring, slowly add the uniform and transparent oil phase to the emulsion base liquid and stir to obtain a mixed system; Step 4: Dissolve the Sophora flavescens extract and ethyl maltol weighed according to the weight parts of claim 1 in another part of deionized water, add them to the mixing system, and stir to obtain a mixture. Step 5: The mixture is processed through a high-shear emulsifier to obtain a uniform and stable water-based insecticide adjuvant.

3. The preparation method according to claim 2, characterized in that, In step 2, the amount of deionized water used is 70% of the total amount of deionized water used in preparing the plant-derived agricultural insecticide synergist. In step 4, the other part of the deionized water is the deionized water other than the deionized water used in step 2.

4. The preparation method according to claim 2, characterized in that, In step 3, after slowly adding the uniform and transparent oil phase to the emulsion base liquid, stir at 500~800 r / min for 10~20 minutes to obtain a mixed system.

5. The preparation method according to claim 2, characterized in that, In step 4, the Sophora flavescens extract dissolved in the other part of deionized water and ethyl maltol are added to the mixture, and the mixture is stirred for 5 to 10 minutes to obtain the mixture.

6. The preparation method according to claim 2, characterized in that, In step 5, the high-shear emulsifier operates at a speed of 10,000 to 15,000 r / min and a processing time of 20 to 30 minutes.

7. The application of a plant-derived agricultural insecticide synergist as described in claim 1 in agricultural insecticide application, characterized in that, The plant-derived agricultural insecticide synergist is mixed with chemical pesticides, diluted with water, and then sprayed evenly.

8. The application according to claim 7, characterized in that, The dosage of the plant-derived agricultural insecticide synergist is 50-150 grams per mu, and the amount of water used is 15-30 kilograms per mu.

9. The application according to claim 7, characterized in that, The chemical pesticide is one of abamectin, lambda-cyhalothrin, imidacloprid, or emamectin benzoate. The plant-derived agricultural insecticide synergist is mixed with chemical pesticides in a tank using a two-stage dilution method before spraying.

10. The application according to claim 7, characterized in that, The agricultural insecticides mentioned include those for controlling cotton aphids or diamondback moths.