Microemulsion containing glufosinate-ammonium, quizalofop-p-ethyl and fluoroglycofen as well as preparation method and application of microemulsion
By using microemulsion compounding of glufosinate, quizalofop-P-ethyl, and ethoxysulfuron-methyl, along with suspension microcapsule technology, the problems of low efficiency and high environmental pollution of existing weeding methods have been solved, achieving highly efficient, low-toxicity, and low-residue weeding effects while promoting soil health.
Patent Information
- Application Number
- CN202511009355.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-22
- Publication Date
- 2025-11-11
AI Technical Summary
Existing weeding methods suffer from problems such as low efficiency, high labor intensity, significant environmental pollution, and threats to ecosystem stability. Chemical herbicides may pollute the environment, while biological weeding is not very effective and affects biodiversity.
A microemulsion of glufosinate, quizalofop-P-ethyl, and ethoxysulfuron-methyl was formulated by combining the active ingredients in a specific mass ratio. Combined with suspension microencapsulation technology, a highly efficient, low-toxicity, and low-residue herbicide was prepared. Suspension microcapsules were then prepared using interfacial polymerization to slow-release the insecticide.
It achieves efficient weed removal while reducing environmental impact. The suspended microcapsule slow-release insecticide helps subsequent crop growth, and polyurea serves as a nitrogen source to supplement soil nitrogen.
Abstract
Description
Technical Field
[0001] This application relates to the field of herbicide technology, and more specifically, to a microemulsion containing glufosinate-ammonium phosphate, quizalofop-p-ethyl, and ethoxysulfuron, as well as its preparation method and application. Background Technology
[0002] Weed control on non-arable land has always been a crucial aspect of agricultural production. Existing weed control methods mainly include physical, chemical, and biological methods. Physical methods are relatively environmentally friendly and controllable, but they are inefficient, labor-intensive, and prone to regrowth. Biological weed control has less environmental impact, promotes biological balance, and can gradually alter the soil environment over time, making it difficult for some weeds to grow. However, the effects of biological weed control are not immediate and require a considerable amount of time, and the impact of introduced organisms on local biodiversity must be considered.
[0003] Chemical weed control primarily uses herbicides to kill or suppress weed growth. This method is highly efficient and can quickly and over large areas address weed problems. However, chemical herbicides can pollute the environment, harm non-target plants and microorganisms, and may even affect higher organisms, including humans, through the food chain. Furthermore, long-term use of chemical herbicides may alter soil structure, posing a potential threat to the stability of agricultural ecosystems. Summary of the Invention
[0004] To make herbicides both efficient and environmentally friendly, this application provides a microemulsion containing glufosinate-ammonium, quizalofop-p-ethyl, and ethoxysulfuron, as well as its preparation method and application.
[0005] In a first aspect, this application provides a microemulsion containing glufosinate-ammonium, quizalofop-p-ethyl, and ethoxysulfuron, employing the following technical solution: A microemulsion containing glufosinate, quizalofop-P-ethyl, and ethoxysulfuron-methyl comprises the following raw materials by weight percentage: 21-25% active ingredient, 16-23% emulsifier, 6-9% dispersant, 18-22% organic solvent, 4-6% suspension microcapsules, and water as the balance; wherein the active ingredient comprises glufosinate, quizalofop-P-ethyl, and ethoxysulfuron-methyl.
[0006] By adopting the above technical solutions, glufosinate has the characteristics of low toxicity, high activity, and good environmental compatibility. It can inhibit the synthesis of glutamine in plants, thereby inhibiting plant growth and causing them to gradually wither and die. It has very low toxicity to mammals and aquatic organisms and is safe for the ecological environment. Quizalofop-P-ethyl is absorbed through the stems and leaves of weeds and is translocated bidirectionally upwards and downwards in the plant, accumulating in the apical and internode meristems, inhibiting the synthesis of fatty acids in cells, causing weeds to die. It has the characteristics of high efficiency, low toxicity, and low residue. Ethyl carboxyfluoride also has the characteristics of high efficiency, low toxicity, and low residue. The effective active ingredient formed by the combination of the three has the characteristics of high efficiency, low toxicity, and environmental protection, which can effectively remove weeds while reducing the impact on the environment.
[0007] Preferably, the mass ratio of glufosinate, quizalofop-P-ethyl, and ethoxysulfuron in the effective active ingredients is (0.87-0.92):(0.68-0.73):(0.78-0.81).
[0008] By adopting the above technical solution, the herbicide formed by compounding glufosinate, quizalofop-P-ethyl, and ethoxysulfuron in a specific mass ratio has a better killing and suppressing effect on weeds, and the synergistic effect of glufosinate, quizalofop-P-ethyl, and ethoxysulfuron is optimal.
[0009] Preferably, the core of the suspended microcapsule is formed by a compound of imidacloprid, thiamethoxam, and permethrin, and the capsule wall of the suspended microcapsule is polyurea.
[0010] By adopting the above technical solution, the core of the suspended microcapsule is an insecticide formed by a compound of imidacloprid, thiamethoxam, and permethrin. Polyurea is used as the capsule wall to coat the core, so that the suspended microcapsule can enter the field along with the herbicide spraying. The suspended microcapsule can release the insecticide slowly, kill weeds and remove pests in the field at the same time, which is beneficial to the growth of subsequent crops in the field.
[0011] Preferably, the method for preparing the suspended microcapsules includes the following steps: dissolving imidacloprid, thiamethoxam, and permethrin in ethyl acetate, stirring until completely dissolved, adding diphenylmethane diisocyanate and stirring thoroughly to form solution A, adding an emulsifier to water and stirring until homogeneous to form solution B, pouring solution A into solution B, shearing and emulsifying to obtain an emulsion, adding ethylenediamine aqueous solution dropwise while stirring, and solidifying while stirring and keeping warm after the reaction is complete, centrifuging and drying to obtain suspended microcapsules.
[0012] By adopting the above technical solution, suspended microcapsules are prepared by interfacial polymerization. The core of the suspended microcapsules is an insecticide formed by a compound of imidacloprid, thiamethoxam, and permethrin, and the capsule wall is polyurea. Polyurea can decompose and release the core, and at the same time, polyurea can also serve as a nitrogen source, which is beneficial to replenishing nitrogen in the soil.
[0013] Preferably, the mass ratio of imidacloprid, thiamethoxam, permethrin, and ethyl acetate is (1.8-2.1):(2.8-3.1):(0.4-0.6):(260-300).
[0014] By adopting the above technical solution, the mass ratio between the active ingredient in the capsule and the solvent can be controlled effectively, thus controlling the interfacial polymerization reaction. When the mass ratio between the two is too high, explosive polymerization is likely to occur. When the mass ratio between the two is too low, the capsule content in the suspended microcapsules is too low, and the active ingredient content is too low.
[0015] Preferably, the mass ratio of diphenylmethane diisocyanate, ethylenediamine and ethyl acetate is (2.8-3.3):(110-118).
[0016] By adopting the above technical solution and controlling the mass ratio of diphenylmethane diisocyanate, ethylenediamine and ethyl acetate, the encapsulation rate and morphology of suspended microcapsules can be effectively controlled. If the mass ratio is too low, the suspended microcapsules will be unstable, the strength will decrease and they will rupture. If the mass ratio is too high, they will be prone to adhesion or poor morphology of suspended microcapsules.
[0017] Secondly, this application provides a method for preparing a microemulsion containing glufosinate-ammonium, quizalofop-p-ethyl, and ethoxysulfuron, using the following technical solution: A method for preparing a microemulsion containing glufosinate, quizalofop-P-ethyl, and ethylcarboxyfluoride includes the following steps: adding an emulsifier, a dispersant, a suspension capsule, glufosinate, quizalofop-P-ethyl, and ethylcarboxyfluoride to an organic solvent, stirring until homogeneous, adding water, and shearing emulsifying to obtain the microemulsion.
[0018] By adopting the above technical solution, emulsifiers, dispersants, suspension capsules, glufosinate, quizalofop-P-ethyl, and ethylcarboxyfluoride are mixed with organic solvents, and then water is added to obtain microemulsions through phase inversion.
[0019] Thirdly, this application provides a method for preparing a microemulsion containing glufosinate-ammonium, quizalofop-p-ethyl, and ethoxysulfuron-methyl, and the microemulsion obtained is used as a herbicide, employing the following technical solution: A method for preparing a microemulsion containing glufosinate, quizalofop-P-ethyl, and ethoxysulfuron-methyl. When used as a herbicide, the microemulsion is sprayed once on the stems and leaves during the vigorous growth period of weeds. The dosage of the microemulsion is 200-400 mL per acre, with an effective active ingredient content of 690-1380 g / ha.
[0020] By adopting the above technical solutions, controlling the dosage of microemulsions and the content of effective active ingredients, weeds can be effectively killed while reducing herbicide residues.
[0021] In summary, this application has the following beneficial effects: 1. Since this application uses glufosinate, quizalofop-P-ethyl, and ethoxysulfuron as the effective active ingredients, the herbicide formed by the combination of glufosinate, quizalofop-P-ethyl, and ethoxysulfuron in a specific mass ratio has a better killing and suppressing effect on weeds, and the synergistic effect of glufosinate, quizalofop-P-ethyl, and ethoxysulfuron is optimal.
[0022] 2. In this application, suspended microcapsules are preferred. The core of the suspended microcapsules is an insecticide formed by a compound of imidacloprid, thiamethoxam, and permethrin. Polyurea is used as the capsule wall to encapsulate the core, so that the suspended microcapsules can enter the field along with the herbicide spraying. The suspended microcapsules can release the insecticide slowly, killing weeds and removing pests in the field, which is beneficial to the growth of subsequent crops in the field.
[0023] 3. In this application, suspended microcapsules are prepared by interfacial polymerization. The core of the suspended microcapsules is an insecticide formed by a compound of imidacloprid, thiamethoxam and permethrin, and the capsule wall is polyurea. Polyurea can decompose and release the core, and at the same time, polyurea can also serve as a nitrogen source, which is beneficial to replenishing nitrogen in the soil. Detailed Implementation
[0024] The present application will be further described in detail below with reference to the embodiments.
[0025] Preparation Examples of Suspension Microcapsules 1-6 Preparation Example 1 The preparation method of the suspended microcapsules includes the following steps: Imidacloprid, thiamethoxam, and permethrin are dissolved in 300 mL of ethyl acetate, with a mass ratio of 1.8:2.8:0.4:260. After stirring until completely dissolved, diphenylmethane diisocyanate is added and stirred thoroughly to form solution A. Span30 is added to 560 mL of water and stirred until homogeneous to form solution B. Solution A is poured into solution B, and emulsification is performed to obtain an emulsion. While stirring, 6 wt% ethylenediamine aqueous solution is added dropwise, with a mass ratio of diphenylmethane diisocyanate, ethylenediamine, and ethyl acetate of 2.8:0.7:110. After the reaction is complete, the mixture is kept at 50°C for 3 hours while stirring and then centrifuged and dried to obtain the suspended microcapsules.
[0026] Preparation Example 2 The preparation method of the suspended microcapsules includes the following steps: Imidacloprid, thiamethoxam, and permethrin are dissolved in 290 mL of ethyl acetate, with a mass ratio of 2.1:3.1:0.6:300. After stirring until completely dissolved, diphenylmethane diisocyanate is added and stirred thoroughly to form solution A. SP7123 is added to 540 mL of water and stirred until homogeneous to form solution B. Solution A is poured into solution B, and emulsification is performed to obtain an emulsion. While stirring, 5 wt% ethylenediamine aqueous solution is added dropwise, with a mass ratio of diphenylmethane diisocyanate, ethylenediamine, and ethyl acetate of 3.3:0.8:118. After the reaction is complete, the mixture is kept at 55°C for 2.8 h while stirring and then dried by centrifugation to obtain the suspended microcapsules.
[0027] Preparation Example 3 The difference between Preparation Example 3 and Preparation Example 1 is that the mass ratio of imidacloprid, thiamethoxam, permethrin, and ethyl acetate is 1.5:3.5:0.8:240.
[0028] Preparation Example 4 The difference between Preparation Example 4 and Preparation Example 1 is that the mass ratio of imidacloprid, thiamethoxam, permethrin, and ethyl acetate is 3.4:2.1:0.2:280.
[0029] Preparation Example 5 The difference between Preparation Example 5 and Preparation Example 1 is that the mass ratio of diphenylmethane diisocyanate, ethylenediamine and ethyl acetate is 2.4:0.5:90.
[0030] Preparation Example 6 The difference between Preparation Example 6 and Preparation Example 1 is that the mass ratio of diphenylmethane diisocyanate, ethylenediamine and ethyl acetate is 3.8:1.5:130. Example
[0031] Example 1 A microemulsion containing glufosinate, quizalofop-P-ethyl, and ethyl carboxyfluoride comprises the following raw materials in weight percentages: 21% active ingredient, 23% emulsifier, 6% dispersant, 22% organic solvent, 4% suspension microcapsules, and water as the balance; wherein the active ingredient comprises glufosinate, quizalofop-P-ethyl, and ethyl carboxyfluoride, the mass ratio of glufosinate, quizalofop-P-ethyl, and ethyl carboxyfluoride is 0.92:0.73:0.81, the emulsifier is Span 60, the dispersant is alkyl glycoside sulfosuccinate, the organic solvent is propylene glycol methyl ether, and the suspension microcapsules are those prepared in Preparation Example 1.
[0032] The preparation method of the above-mentioned microemulsion containing glufosinate-quizalofop-p-ethyl and ethylcarboxyfluoride includes the following steps: adding emulsifier, dispersant, suspension capsule, glufosinate-p-ethyl, quizalofop-p-ethyl and ethylcarboxyfluoride into an organic solvent, stirring evenly, adding water, and shearing emulsifying to obtain the microemulsion.
[0033] The microemulsion prepared by the above method containing glufosinate-ammonium-quizalofop-p-ethyl and ethoxysulfuron-methyl is used as a herbicide. When applied as a herbicide, it is sprayed once on the stems and leaves during the vigorous growth period of weeds. The dosage of the microemulsion is 200 mL per mu (667 square meters), with an effective active ingredient of 690 g / ha.
[0034] Example 2 A microemulsion containing glufosinate, quizalofop-P-ethyl, and ethyl carboxyfluoride comprises the following raw materials in weight percentages: 25% active ingredient, 16% emulsifier, 9% dispersant, 18% organic solvent, 6% suspension microcapsules, and water as the balance; wherein the active ingredient comprises glufosinate, quizalofop-P-ethyl, and ethyl carboxyfluoride, the mass ratio of glufosinate, quizalofop-P-ethyl, and ethyl carboxyfluoride is 0.87:0.68:0.78, the emulsifier is Span 80, the dispersant is ethylene oxide-propylene oxide block ether, the organic solvent is ethylene glycol, and the suspension microcapsules are those prepared in Preparation Example 2.
[0035] The preparation method of the above-mentioned microemulsion containing glufosinate-quizalofop-p-ethyl and ethylcarboxyfluoride includes the following steps: adding emulsifier, dispersant, suspension capsule, glufosinate-p-ethyl, quizalofop-p-ethyl and ethylcarboxyfluoride into an organic solvent, stirring evenly, adding water, and shearing emulsifying to obtain the microemulsion.
[0036] The microemulsion prepared by the above method containing glufosinate-ammonium-quizalofop-p-ethyl and ethoxysulfuron-methyl is used as a herbicide. When applied as a herbicide, it is sprayed once on the stems and leaves during the vigorous growth period of weeds. The dosage of the microemulsion is 400 mL per mu (667 square meters), with an effective active ingredient of 1380 g / ha.
[0037] Example 3 The difference between Example 3 and Example 1 is that the suspended microcapsules in Example 3 are the same as those prepared in Preparation Example 3.
[0038] Example 4 The difference between Example 4 and Example 1 is that the suspended microcapsules in Example 4 are the same as those prepared in Preparation Example 4.
[0039] Example 5 The difference between Example 5 and Example 1 is that the suspended microcapsules in Example 5 are the same as those prepared in Preparation Example 5.
[0040] Example 6 The difference between Example 6 and Example 1 is that the suspended microcapsules in Example 6 are the same as those prepared in Preparation Example 6.
[0041] Example 7 The difference between Example 7 and Example 1 is that in Example 7, the mass ratio of glufosinate, quizalofop-P-ethyl, and ethoxysulfuron is 0.56:0.86:0.91.
[0042] Example 8 The difference between Example 8 and Example 1 is that in Example 8, the mass ratio of glufosinate, quizalofop-P-ethyl, and ethoxysulfuron is 1.2:0.62:0.28.
[0043] Comparative Example Comparative Example 1 The difference between Comparative Example 1 and Example 1 is that Comparative Example 1 includes the following raw materials by mass percentage: 30% active ingredient, 15% emulsifier, 10% dispersant, 10% organic solvent, 4% suspended microcapsules and water as the balance.
[0044] Comparative Example 2 The difference between Comparative Example 2 and Example 1 is that Comparative Example 2 uses an equal amount of water instead of suspended microcapsules.
[0045] Detection methods Microemulsions were prepared according to the raw materials and preparation methods of Examples 1-8 and Comparative Examples 1-2. The above microemulsions, 200 g / L glufosinate aqueous solution (purchased from Shandong Lvba Chemical Co., Ltd., 500 mL per mu), 20% quizalofop-P-ethyl EC (purchased from Hunan Nongda Haite Agricultural Chemical Co., Ltd., 45 mL per mu), and 20% flufenacet acetate EC (purchased from Qiaochang Modern Agriculture Co., Ltd., 25 mL per mu) were used to calculate the plant control efficacy and fresh weight control efficacy of the herbicides according to the "Guidelines for Field Efficacy Testing of Pesticides" GB / T 17980.51-2000 and SOP-TM-001a "Herbicide Testing". The results are recorded in Table 1.
[0046] Control efficacy (%) per plant / fresh weight = (number of weeds / fresh weight in the water control area - number of weeds / fresh weight in the pesticide-treated area) / (number of weeds / fresh weight in the water control area) Five plants of the same variety and with similar growth conditions were selected from the water control area and the pesticide treatment area as reference samples for pest control effect. The control effect of microemulsion on pests and diseases was calculated based on the killing effect on wireworms, and the results were recorded in Table 1.
[0047] Table 1. Herbicidal and insecticidal effects of microemulsions project Plant control effect / % Fresh weight efficacy / % Insect control efficacy / % Example 1 91.4 93.8 92.2 Example 2 97.1 98.1 91.6 Example 3 91.5 93.4 83.6 Example 4 92.0 93.1 84.6 Example 5 91.7 92.9 83.9 Example 6 90.9 93.7 84.5 Example 7 86.1 84.6 90.9 Example 8 84.2 83.2 91.5 Comparative Example 1 83.9 79.6 84.6 Comparative Example 2 91.5 92.9 76.2 glufosinate aqueous solution 95.3 96.6 64.9 Quizalofop-P-ethyl emulsifiable concentrate 15.8 10.2 35.9 flufenacetate emulsifiable concentrate 31.4 44.1 54.9 Based on Table 1, Examples 1-2, and comparisons with glufosinate-ammonium aqueous solution, quizalofop-P-ethyl EC, and flufenoxuron EC, it can be seen that Examples 1-2 exhibit superior control efficacy per plant and per fresh weight compared to glufosinate-ammonium aqueous solution, quizalofop-P-ethyl EC, and flufenoxuron EC. This indicates that the effective active ingredient formed by the combination of glufosinate-ammonium, quizalofop-P-ethyl, and flufenoxuron has a better effect on weed eradication and control. Furthermore, Examples 1-2 demonstrate good control efficacy against pests and diseases. Glufosinate-ammonium is characterized by low toxicity, high activity, and good environmental compatibility, and can inhibit the growth of plant pathogens. Glutamine synthesis inhibits plant growth, leading to gradual death. Quizalofop-P-ethyl is absorbed through the stems and leaves of weeds, inhibiting fatty acid synthesis in cells and causing weed necrosis. It is characterized by high efficiency, low toxicity, and low residue. Ethyl carboxyfluoride also exhibits high efficiency, low toxicity, and low residue. There is a synergistic effect between glufosinate, quizalofop-P-ethyl, and ethoxyfluoride. The combined active ingredient is more effective at removing weeds than single-ingredient herbicides, while also possessing high efficiency, low toxicity, and environmental friendliness, reducing environmental impact.
[0048] Compared with Example 1, Comparative Example 2 showed a decrease in insecticidal effect. Since no suspended microcapsules were added in Comparative Example 2, this indicates that suspended microcapsules can improve the insecticidal effect of microemulsions. The capsule core of the suspended microcapsules is an insecticide formed by a combination of imidacloprid, thiamethoxam, and permethrin. There is a synergistic effect among imidacloprid, thiamethoxam, and permethrin. The synergistic effect is optimal and the insecticidal effect is better when the combination is performed according to the mass ratio of Examples 1-2. Polyurea acts as the capsule wall to coat the capsule core, making the insecticidal effect of imidacloprid, thiamethoxam, and permethrin more persistent. While eliminating weeds, polyurea can decompose and serve as a nitrogen source, providing nitrogen for vegetation and soil.
[0049] Compared with Example 1, the insecticidal effect of Examples 3-4 was reduced. In the preparation of suspended microcapsules in Examples 3-4, the mass ratio of imidacloprid, thiamethoxam, permethrin, and ethyl acetate was adjusted, indicating that the mass ratio of imidacloprid, thiamethoxam, permethrin, and ethyl acetate affects the performance of suspended microcapsules. The mass ratio between the active ingredient in the capsule and the solvent can effectively control the interfacial polymerization reaction. If it is too high, it is easy to cause explosive polymerization, affecting the morphology and coverage of the suspended microcapsules. If it is too low, the content of the active ingredient in the suspended microcapsules will be too low, affecting the function of the active ingredient in the suspended microcapsules.
[0050] Compared with Example 1, the insecticidal effect of Examples 5-6 was reduced. In the preparation of suspended microcapsules in Examples 5-6, the mass ratio of diphenylmethane diisocyanate, ethylenediamine and ethyl acetate was adjusted, indicating that the mass ratio of diphenylmethane diisocyanate, ethylenediamine and ethyl acetate has an impact on the performance of suspended microcapsules. Controlling the mass ratio between the capsule wall and the solvent can effectively control the encapsulation rate and morphology of suspended microcapsules, forming suspended microcapsules with better morphology, good strength, and resistance to breakage and adhesion. Too high or too low a ratio will affect the morphology and strength of the suspended microcapsules, thus affecting the effect of the suspended microcapsules.
[0051] Compared with Example 1, the weed control effect of Examples 7-8 was reduced. Examples 7-8 adjusted the mass ratio of glufosinate, quizalofop-P-ethyl, and ethoxysulfuron, indicating that there is a synergistic effect among glufosinate, quizalofop-P-ethyl, and ethoxysulfuron. In addition, the mass ratio of glufosinate, quizalofop-P-ethyl, and ethoxysulfuron in Example 1 made the synergistic effect among the three better, and could better control and suppress weeds.
[0052] Compared with Example 1, Comparative Example 1 showed a decrease in weed control and pest control, indicating that the microemulsion prepared by the mass percentage of each raw material in Example 1 can more effectively exert the effects of glufosinate, quizalofop-P-ethyl, and ethoxysulfuron, as well as the insecticidal effect of the suspended microcapsules.
[0053] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.
Claims
1. A microemulsion containing glufosinate-ammonium, quizalofop-p-ethyl, and ethoxysulfuron, characterized in that: The raw materials include the following weight percentages: 21-25% active ingredients, 16-23% emulsifiers, 6-9% dispersants, 18-22% organic solvents, 4-6% suspension microcapsules, and water as the balance; among which the active ingredients include glufosinate, quizalofop-P-ethyl, and ethoxysulfuron.
2. The microemulsion containing glufosinate-ammonium-quizalofop-p-ethyl-methyl as described in claim 1, characterized in that: The mass ratio of glufosinate, quizalofop-P-ethyl, and ethoxysulfuron in the effective active ingredients is (0.87-0.92):(0.68-0.73):(0.78-0.81).
3. The microemulsion containing glufosinate-ammonium-quizalofop-p-ethyl-methyl as described in claim 1, characterized in that: The core of the suspended microcapsules is formed by a compound of imidacloprid, thiamethoxam, and permethrin, and the capsule wall of the suspended microcapsules is polyurea.
4. The microemulsion containing glufosinate-ammonium, quizalofop-p-ethyl, and ethoxysulfuron as described in claim 3, characterized in that: The method for preparing the suspended microcapsules includes the following steps: dissolving imidacloprid, thiamethoxam, and permethrin in ethyl acetate, stirring until completely dissolved, adding diphenylmethane diisocyanate and stirring thoroughly to form solution A, adding an emulsifier to water and stirring until homogeneous to form solution B, pouring solution A into solution B, shearing emulsification to obtain an emulsion, adding ethylenediamine aqueous solution dropwise while stirring, and solidifying while stirring and keeping warm after the reaction is complete, centrifuging and drying to obtain suspended microcapsules.
5. The microemulsion containing glufosinate-ammonium, quizalofop-p-ethyl, and ethoxysulfuron according to claim 4, characterized in that: The mass ratio of imidacloprid, thiamethoxam, permethrin, and ethyl acetate is (1.8-2.1):(2.8-3.1):(0.4-0.6):(260-300).
6. The microemulsion containing glufosinate-ammonium-quizalofop-p-ethyl-methyl as described in claim 4, characterized in that: The mass ratio of diphenylmethane diisocyanate, ethylenediamine, and ethyl acetate is (2.8-3.3):(0.7-0.8):(110-118).
7. The method for preparing the microemulsion containing glufosinate-ammonium-quizalofop-p-ethyl and ethoxysulfuron as described in any one of claims 1-6, characterized in that: The process includes the following steps: adding emulsifier, dispersant, suspension capsule, glufosinate, quizalofop-P-ethyl and ethylcarboxyfluoride into an organic solvent, stirring until homogeneous, adding water, and shearing emulsification to obtain a microemulsion.
8. The microemulsion prepared by the method of claim 7 containing glufosinate-ammonium-quizalofop-p-ethyl-methylfluoride, and its application as a herbicide, characterized in that: Spray the stems and leaves once during the vigorous growth period of weeds. The dosage of microemulsion is 200-400 mL per acre, with an effective active ingredient content of 690-1380 g / hectare.