Insecticidal composition containing pyriproxyfen and fluxazole amide

Abstract

The invention discloses an insecticidal composition which comprises pyriproxyfen and fluxazole amide, preferably, the weight ratio of the pyriproxyfen to the fluxazole amide is (20: 1)-(1: 20), and particularly preferably, the weight ratio of the pyriproxyfen to the fluxazole amide is (10: 1)-(1: 10). The composition disclosed by the invention shows an excellent synergistic effect in preventing and treating cruciferous vegetable pests, and has a wide application prospect.

Description

Technical Field

[0001] The invention belongs to the field of pesticides, and particularly relates to an insecticide composition containing pyriproxyfen and fluoxetine, and a formulation and use thereof. Background Art

[0002] Chemical control is an important means of preventing and controlling pests in agriculture or public health. However, due to the long-term use of pesticides, many pests have developed resistance to commonly used pesticides.

[0003] The increase in pest resistance is a major problem facing chemical control. In addition, the current irrational use of pesticides has further led to the continuous increase in the resistance levels of major pests on crops, such as lepidopteran pests such as diamondback moth and mite pests, thereby prompting a vicious cycle of increasing field pesticide use, causing a series of problems such as increased pesticide residues and serious environmental pollution, which is not conducive to the sustainable development of agriculture.

[0004] To address the problem of pest resistance arising from the use of single pesticides, those skilled in the art have been using different pesticide combinations to screen for optimal combinations. This has significantly improved field control effectiveness, reduced pesticide dosage and costs, slowed the rate of resistance development, and extended the lifespan of pesticides. This has significant implications for the sustainable development of pesticides. However, those skilled in the art understand that the effects of combining two or more pesticides are unpredictable and may result in antagonistic, additive, or synergistic effects.

[0005] Pyriproxyfen, English common name: Pyriproxyfen, CAS No. 95737-68-1, molecular formula C20H19NO3. Pyriproxyfen is a phenyl ether insect growth regulator and a juvenile hormone type chitin synthesis inhibitor, which has the effect of inhibiting the pupation and emergence of mosquito and fly larvae. Mosquito and fly larvae exposed to this agent basically die in the pupal stage and cannot emerge. Pyriproxyfen also has systemic transfer activity, which can affect the larvae hidden on the back of the leaves. Pyriproxyfen was first registered for use in public health by Sumitomo Chemical Co., Ltd. of Japan in 1989, and was registered for use in agriculture in Japan in 1995. The pyriproxyfen mentioned here should be understood as a compound or isomer with the following structure:

[0006]

[0007] Fluxametamide, commonly known as Fluxametamide, CAS number 928783-29-3, with a molecular formula of C20H16C12F3N3O3, is an isoxazole insecticide developed by Nissan Chemical Co., Ltd. of Japan. It has broad-spectrum efficacy against a wide range of insect pests and is primarily used to control lepidopteran pests, whiteflies, leafminers, beetles, and other pests and mites on crops such as vegetables, fruit trees, cotton, soybeans, and tea. Fluxametamide herein refers to compounds or isomers having the following structure:

[0008]

[0009] The inventors of the present invention have conducted in-depth research on the combination of pyriproxyfen and fluoxetine. Based on a large number of indoor formulation screening tests and field efficacy tests, they found that the combination of pyriproxyfen and fluoxetine exhibits obvious synergistic effects within a certain range of compounding ratios. Summary of the Invention

[0010] The present invention provides a synergistic insecticide composition containing pyriproxyfen and fluoxetine. The composition of the present invention exhibits a good synergistic effect on relevant pests within a certain ratio range and can delay the development of drug resistance in relevant pests.

[0011] Specifically, the present invention provides an insecticide composition comprising the effective active ingredients pyriproxyfen and fluoxetine, wherein the weight ratio of pyriproxyfen to fluoxetine is 20:1-1:20. Preferably, the weight ratio of pyriproxyfen to fluoxetine is 10:1-1:10.

[0012] The insecticide composition of the present invention can also be prepared into a suitable formulation for pesticides, which can be a suspension concentrate, suspoemulsion, emulsion in water, microemulsion, dispersible oil suspension, microcapsule suspension, microcapsule suspension-suspension concentrate, wettable powder or water dispersible granules.

[0013] The insecticide composition disclosed in the present invention can be used to control crop pests. The crops are preferably vegetables. The pests are preferably one or more of the group consisting of diamondback moth, beet armyworm, thrips, whitefly, leafminer, flea beetle, red spider, and rust mite.

[0014] Beneficial effects

[0015] 1. The pyriproxyfen and fluoxetine provided by the present invention are compound insecticides with different insecticidal action mechanisms, which have multiple action sites on pests and expand the insecticidal spectrum of pyriproxyfen and fluoxetine.

[0016] 2. The present invention provides a mixture of an effective amount of pyriproxyfen and fluoxetine, which has a synergistic effect, significant synergy, excellent control effect, can reduce the application dosage of each biologically active substance, reduce the cost of use, delay the development of pest resistance, and reduce harm to the environment. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Unless otherwise expressly stated, throughout the specification and claims, the term "including" or its variations such as "comprising" or "including" will be understood to include the stated components without excluding other components.

[0018] In addition, in order to better illustrate the present invention, numerous specific details are provided in the specific embodiments below. It should be understood by those skilled in the art that the present invention can also be implemented without certain specific details. In some embodiments, raw materials, methods, means, etc. well known to those skilled in the art are not described in detail in order to highlight the main purpose of the present invention.

[0019] In the present invention, percentages refer to percentages by weight unless otherwise specified.

[0020] As used herein, the term "synergistic effect" means that the insecticidal effect of the active agent combination or composition of the present invention is greater than the sum of the effects of the individual active agents, or in other words, the effect is superadditive.

[0021] First, the present invention provides an insecticide composition, which comprises effective active ingredients pyriproxyfen and fluoxetine amide, wherein the weight ratio of the pyriproxyfen and fluoxetine amide is 20:1-1:20.

[0022] Preferably, the weight ratio of pyriproxyfen to fluoxetine is 10:1-1:10.

[0023] Particularly preferably, the weight ratio of pyriproxyfen and fluoxetine is 10:1, 6:1, 4:1, 2:1, 1:1, 1:2, 1:4, 1:6, or 1:10.

[0024] The weight ratio of pyriproxyfen to fluazifop in the insecticidal composition of the present invention shows a good synergistic effect within the above range.

[0025] The insecticide composition of the present invention further contains pesticide adjuvants, wherein the pyriproxyfen and fluoxetine account for 1-99% by weight of the composition, preferably 10-90%, more preferably 20-80%.

[0026] Preferably, the pesticide adjuvant in the above insecticide composition includes one or more of an emulsifier, a solvent, a wetting agent, a dispersant, a thickener, a stabilizer, an antifreeze agent, and a defoaming agent.

[0027] The insecticide composition of the present invention can be prepared into a suitable pesticide formulation.

[0028] Preferably, the above-mentioned insecticide composition can be prepared into a dosage form selected from the group consisting of suspension concentrate, suspoemulsion, emulsion in water, microemulsion, dispersible oil suspension, microcapsule suspension, microcapsule suspension-suspension concentrate, wettable powder or water dispersible granules.

[0029] The pesticide adjuvants mentioned in the present invention include one or more of emulsifiers, solvents, wetting agents, dispersants, thickeners, stabilizers, antifreeze agents, and defoaming agents. Preferably, the adjuvants are as defined below.

[0030] The emulsifier is a mixture of calcium dodecylbenzenesulfonate and any one or more of fatty acid polyoxyethylene ether, alkylphenol polyoxyethylene ether sulfosuccinate, styrylphenol polyoxyethylene ether, nonylphenol polyoxyethylene ether, castor oil polyoxyethylene ether, fatty acid polyoxyethylene ester, polyoxyethylene fatty alcohol ether, BY-125, Ethylan NS-500LQ, Ethylan 954LQ, Berol 904, Atlas G-1096, Atlas G-5002L and Atlas G-5000 in any proportion.

[0031] The solvent is one or a mixture of two or more of xylene, toluene, chlorobenzene, dichlorotoluene, paraffin, cyclohexane, mineral oil, vegetable oil, alcohols, acetone, cyclohexanone, methyl isobutyl ketone, dimethylformamide, dimethyl sulfoxide, solvent oil S-150, isopropyl alcohol, paraffin oil, methyl oleate, water, etc.

[0032] The wetting agent is one or more of sodium lauryl sulfate, dodecylbenzenesulfonic acid, lakai powder, wetting penetrant, soapberry powder, silkworm feces and soapberry powder.

[0033] The dispersant is one or more of polycarboxylates, lignin sulfonates, alkylphenol polyoxyethylene ether formaldehyde condensate sulfates, alkylbenzene sulfonate calcium salts, naphthalenesulfonic acid formaldehyde condensate sodium salts, alkylphenol polyoxyethylene ethers, fatty amine polyoxyethylene ethers, fatty acid polyoxyethylene esters, glycerol fatty acid ester polyoxyethylene ethers, Zephrym PD 2206, Atlox 4914, Atlox 4917, Atlox Metasperse 550S, Multiwet 8269 and Morwet EFW.

[0034] The wetting agent is one of Atlox 4894, Atlas G-5002L, and Morwet EFW, or a combination of at least two of them.

[0035] The thickener is one or more of xanthan gum, hydroxymethyl cellulose, hydroxyethyl cellulose, methyl cellulose, AtloxRheostrux200, magnesium aluminum silicate and polyvinyl alcohol.

[0036] The stabilizer is one of sodium citrate and resorcinol.

[0037] The antifreeze agent is one or more of ethylene glycol, propylene glycol, glycerol and urea.

[0038] The defoaming agent is one or more of silicone oil, silicone compounds, C10-20 saturated fatty acid compounds, and C8-10 fatty alcohol compounds.

[0039] The filler used is one or more of white carbon black, kaolin, soluble starch, calcined diatomaceous earth, attapulgite, ammonium sulfate, glucose, white carbon black, washed kaolin and the like.

[0040] The present invention also provides use of the insecticide composition of the present invention in preventing and controlling crop pests.

[0041] Preferably, the crops of the present invention are vegetables. More preferably, the vegetables of the present invention are cruciferous vegetables, particularly preferably choy sum, cabbage or pakchoy.

[0042] The crop pests that can be controlled by the insecticide composition of the present invention are preferably one or more pests selected from the group consisting of diamondback moth, beet armyworm, thrips, whitefly, leafminer, flea beetle, red spider, and rust mite.

[0043] The technical solution of the present invention is further described below by way of specific embodiments. It should be understood by those skilled in the art that the embodiments are merely to help understand the present invention and should not be regarded as specific limitations of the present invention.

[0044] The raw materials in the following examples that are not otherwise specified can be purchased from the market.

[0045] 1) Preparation Example

[0046] Pharmaceutical Example 1: 20% by weight pyriproxyfen-fluoxetine suspension

[0047] Pyriproxyfen 10 wt%, fluoxetine 10 wt%, dispersant Agrilan 7885 wt%, wetting agent Morwet IP 3 wt%, xanthan gum 0.2 wt%, magnesium aluminum silicate 0.6 wt%, white carbon black 0.2 wt%, silicone defoamer 0.5 wt%, glycerol 4 wt%, water to 100 wt%.

[0048] Pharmaceutical Example 2: 20% by weight pyriproxyfen-fluoxetine amide suspension emulsion

[0049] Pyriproxyfen 10 wt%, fluoxetine 10 wt%, dispersant Morwet D-425 5 wt%, emulsifier Ethylan NS-500LQ 5 wt%, solvent oil S-150 20 wt%, xanthan gum 0.2 wt%, magnesium aluminum silicate 0.6 wt%, silicone defoamer 0.2 wt%, water to 100 wt%.

[0050] Pharmaceutical Example 3: 20% by weight pyriproxyfen-fluoxetine aqueous emulsion

[0051] Pyriproxyfen 10 wt%, fluoxetine 10 wt%, emulsifier BY-125 2 wt%, emulsifier Ethylan NS-500LQ 6 wt%, xylene 8 wt%, solvent oil S-150 10 wt%, xanthan gum 0.2 wt%, ethylene glycol 5 wt%, silicone defoamer 0.2 wt%, water to 100 wt%.

[0052] Pharmaceutical Example 4: 20 wt% pyriproxyfen-fluoxetine amide microemulsion

[0053] Pyriproxyfen 10 wt%, fluoxetine 10 wt%, emulsifier Berol 904 20 wt%, emulsifier Ethylan 954LQ 5 wt%, isopropyl alcohol 10 wt%, cyclohexanone 10 wt%, ethylene glycol 5 wt%, silicone defoamer 0.2 wt%, water to 100 wt%.

[0054] Pharmaceutical Example 5: 20% by weight of pyriproxyfen-fluoxetine dispersible oil suspension

[0055] Pyriproxyfen 10% by weight, fluoxetine 10% by weight, dispersant Zephrym PD 22064% by weight, dispersant Atlox 49142% by weight, emulsifier Atlas G-109615% by weight, thickener Atlox Rheostrux 2000.5% by weight, paraffin oil 10% by weight, methyl oleate to 100% by weight.

[0056] Pharmaceutical Example: 6: 20% by weight pyriproxyfen-fluoxetine microcapsule suspension

[0057] Pyriproxyfen 10% by weight, fluoxetine 10% by weight (of which the weight fraction of the free active ingredient accounts for 8% by weight of the total active ingredient weight fraction), dispersant Atlox 49175% by weight, emulsifier Atlas G-5002L 5% by weight, xanthan gum 0.15% by weight, magnesium aluminum silicate 0.5% by weight, silicone defoamer 0.2% by weight, and water to 100% by weight.

[0058] Pharmaceutical Example 7: 30% by weight pyriproxyfen·fluoxetine amide microcapsules-microcapsule suspension

[0059] Pyriproxyfen 15% by weight, fluoxetine 15% by weight (wherein, pyriproxyfen is in the form of microcapsules, and the weight fraction of the free active ingredient accounts for 8% by weight of the total active ingredients), dispersant Atlox 49135% by weight, wetting agent Atlox 48940.5% by weight, emulsifier Atlas G-50003% by weight, xanthan gum 0.15% by weight, magnesium aluminum silicate 0.5% by weight, silicone defoamer 0.2% by weight, and water is supplemented to 100% by weight.

[0060] Pharmaceutical Example 8: 60% by weight pyriproxyfen-fluoxetine wettable powder

[0061] Pyriproxyfen 30% by weight, fluoxetine 30% by weight, dispersant Atlox Metasperse 550S 10% by weight, Multiwet 8269 3% by weight, polyvinyl pyrrolidone 10% by weight, kaolin to 100% by weight.

[0062] Pharmaceutical Example 9: 40% by weight pyriproxyfen-fluoxetine water dispersible granules

[0063] Pyriproxyfen 20% by weight, fluoxetine 20% by weight, dispersant Morwet D-425 10% by weight, dispersant Atlox Metasperse 550S 5% by weight, Morwet EFW 2% by weight, soluble starch 5% by weight, calcined diatomaceous earth 15% by weight, and water-washed kaolin to 100% by weight.

[0064] 2) Indoor toxicology test

[0065] The co-toxicity coefficient (CTC) was calculated using the Sun YP method to evaluate the mixed effect of the two active ingredients in the insecticide composition of the present invention.

[0066] Evaluation criteria: When CTC ≥ 120, it shows a synergistic effect; when CTC ≤ 80, it shows an antagonistic effect; 80 < CTC < 120, it shows an additive effect.

[0067] Calculation formula:

[0068] Co-toxicity coefficient (CTC) = [actual toxicity index (ATI) of the mixture / theoretical toxicity index (TTI) of the mixture] × 100 Actual toxicity index (ATI) of the mixture = (LC of the standard agent) 50 LC of mixture 50 )×100

[0069] Theoretical Toxicity Index (TTI) of mixture = TI of agent A × the content of A in the active ingredient of the mixture + TI of agent B × the content of B in the active ingredient of the mixture

[0070] Toxicity index (TI) = (LC of standard drug 50 / LC of the test agent 50 )×100 (one of the A and B agents is used as the standard agent)

[0071] Agent A and Agent B are two mixed active ingredients, and the mixture is the mixture of Agent A and Agent B.

[0072] Test Example 1

[0073] Test target: Diamondback moth, collected from the Chinese cabbage field in Yonghan Town, Longmen County, Huizhou City, Guangdong Province, and fed with un-pesticide-treated Chinese cabbage leaves grown indoors for 3 hours, and healthy 3rd-4th instar larvae were selected for use.

[0074] Test conditions: temperature: 24-26°C, humidity: RH60-80%, light intensity L:D = (14:10) h.

[0075] Test method: Refer to the "Agricultural Industry Standard of the People's Republic of China NY / T1154.7-2006" and adopt the immersion method.

[0076] Preparation: In this test example, Agent A is the original drug of pyriproxyfen (95%), and Agent B is the original drug of fluoxetine (98%). Agent A is selected as the standard agent. Agents A and B are prepared into the following mixture based on the weight of their respective active ingredients:

[0077] Mixture 1 (A:B=50:1) Mixture 2 (A:B=40:1) Mixture 3 (A:B=30:1) Mixture 4 (A:B=20:1) Mixture 5 (A:B=10:1) Mixture 6 (A:B=6:1) Mixture 7 (A:B=4:1) Mixture 8 (A:B=2:1) Mixture 9 (A:B=1:1) Mixture 10 (A:B=1:2) Mixture 11 (A:B=1:4) Mixture 12 (A:B=1:6) Mixture 13 (A:B=1:10) Mixture 14 (A:B=1:20) Mixture 15 (A:B=1:30) Mixture 16 (A:B=1:40) Mixture 17 (A:B=1:50)

[0078] The above 17 mixtures were accurately weighed respectively, each mixture was prepared into a mother liquor with acetone, and the mother liquor was diluted with distilled water to form a series of reagents with a certain concentration gradient.

[0079] Treatment: Wash and dry cabbage leaves, then cut them into circular pieces approximately 8 cm in diameter. Soak them in each concentration of chemical solution for 10 seconds, remove them, dry them, and place them in 9 cm diameter Petri dishes. Seed 10 diamondback moth larvae per dish, with four replicates per treatment. Check for live and dead insects 48 hours after seeding.

[0080] The data were processed using the probability value analysis method. The statistical data were processed using DPS software to calculate the LC of the toxicity regression line of each mixture. 50 The co-toxicity coefficient (CTC) was calculated using the Sun YP method. The results are shown in Table 1.

[0081] Table 1 Bioassay data of the insecticide composition of the present invention on the 3rd instar larvae of diamondback moth

[0082]

[0083]

[0084] As can be seen from Table 1, the insecticidal composition of the present invention has a good control effect on Plutella xylostella, and shows a synergistic effect when the weight ratio of pyriproxyfen to fluoxetine is in the range of 20:1-1:20, especially when the weight ratio is 10:1, 6:1, 4:1, 2:1, 1:1, 1:2, 1:4, 1:6, and 1:10, it has a higher co-toxicity coefficient.

[0085] Test Example 2

[0086] Test target: Beet armyworm larvae, collected from Chinese cabbage fields in Longtian Town, Longmen County, Huizhou City, Guangdong Province, and fed with untreated Chinese cabbage leaves grown indoors for 3 hours. Healthy 3rd-4th instar larvae were selected for use.

[0087] Test conditions: temperature: 24-26°C, humidity: RH60-80%, light intensity L:D = (14:10) h.

[0088] Test method: Refer to the "Agricultural Industry Standard of the People's Republic of China NY / T1154.7-2006" and adopt the immersion method.

[0089] Preparation of medicine: same as in Experimental Example 1.

[0090] Chemical treatment: Wash and dry cabbage leaves, then cut them into circular pieces approximately 8 cm in diameter. Soak them in each concentration of chemical solution for 10 seconds, remove them, dry them, and place them in 9 cm diameter Petri dishes. Seed 10 beet armyworms per dish, with four replicates per treatment. Check for dead and live insects 48 hours after seeding.

[0091] The data were processed using the probability value analysis method. The statistical data were processed using DPS software to calculate the LC of the toxicity regression line. 50 The co-toxicity coefficient was calculated using the Sun Yunpei method. The results are shown in Table 2.

[0092] Table 2 Bioassay effects of the insecticidal composition of the present invention on 3rd-4th instar larvae of beet armyworm

[0093] Test drug <![CDATA[LC 50 (mg / L)]]> TI ATI TTI Co-toxicity coefficient (CTC) Pyriproxyfen (A) 15.29 100 / / / Fluoxetine amide (B) 9.47 161.46 / / / Mixture 1 (A:B=50:1) 18.92 / 80.81 101.21 79.84 Mixture 2 (A:B=40:1) 16.47 / 92.84 101.50 91.47 Mixture 3 (A:B=30:1) 14.62 / 104.58 101.98 102.55 Mixture 4 (A:B=20:1) 11.35 / 134.71 102.93 130.88 Mixture 5 (A:B=10:1) 10.81 / 141.44 105.59 133.95 Mixture 6 (A:B=6:1) 9.69 / 157.79 108.78 145.05 Mixture 7 (A:B=4:1) 8.64 / 176.97 112.29 157.60 Mixture 8 (A:B=2:1) 7.05 / 216.88 120.49 180.00 Mixture 9 (A:B=1:1) 6.21 / 246.22 130.73 188.34 Mixture 10 (A:B=1:2) 6.08 / 251.48 140.97 178.39 Mixture 11 (A:B=1:4) 6.19 / 247.01 149.17 165.59 Mixture 12 (A:B=1:6) 6.57 / 232.72 152.68 152.42 Mixture 13 (A:B=1:10) 6.86 / 222.89 155.87 143.00 Mixture 14 (A:B=1:20) 7.27 / 210.32 158.53 132.67 Mixture 15 (A:B=1:30) 8.53 / 179.25 159.48 112.40 Mixture 16 (A:B=1:40) 9.46 / 161.63 159.96 101.04 Mixture 17 (A:B=1:50) 12.83 / 119.17 160.25 74.37

[0094] As can be seen from Table 2, the insecticidal composition of the present invention has a good control effect on beet armyworm, and shows a synergistic effect when the weight ratio of pyriproxyfen to fluazifop is in the range of 20:1-1:20, especially when the weight ratio is 10:1, 6:1, 4:1, 2:1, 1:1, 1:2, 1:4, 1:6, and 1:10, the co-toxicity coefficient is relatively high.

[0095] (3) Field efficacy test

[0096] The experiment included 12 treatments, namely the 9 agents mentioned above, 1 blank control (i.e., no agent was applied), and 2 comparative examples. The 2 comparative examples are as follows:

[0097] Comparative Example 1: The preparation was carried out according to the formula of Example 1, except that the active ingredient was pyriproxyfen.

[0098] Comparative Example 2: The preparation was carried out according to the formula of Example 1, except that the active ingredient was fluoxetine.

[0099] The dosage of each agent is 1.0g / mu based on the active ingredient.

[0100] The experiment was conducted in a farmer's contracted field in Changning Town, Boluo County, Huizhou City, Guangdong Province. The test field was planted with cabbage, and the soil had a pH of 7.5 and medium fertility. The main pests were leafminers, spider mites, and diamondback moths. The base insect population was surveyed before application and again 3, 7, 14, and 30 days after application, for a total of five surveys. The control efficacy was calculated based on the base insect population before application and the residual insect counts on each day after application. The population reduction rate and control efficacy were calculated as follows:

[0101]

[0102]

[0103] The calculation results are shown in Table 4.

[0104]

[0105] Table 3 Field control effect of the insecticide composition of the present invention

[0106] As shown in Table 3, the insecticide composition of the present invention has a better control effect than single insecticides.

[0107] The preferred embodiments of the present invention have been described above. However, the present invention is not limited to the specific details of the aforementioned embodiments. The technical solutions of the present invention may be combined and improved in various suitable ways without contradiction. Such improvements, if they fall within the scope of the technical concept of the present invention, shall fall within the scope of protection of the present invention.

Claims

1. An insecticidal composition, characterized in that The invention comprises effective active ingredients pyriproxyfen and fluoxetine amide, wherein the weight ratio of the pyriproxyfen and fluoxetine amide is 20:1-1:

20.

2. The insecticidal composition according to claim 1, characterized in that The weight ratio of pyriproxyfen and fluoxetine is 10:1-1:

10.

3. The insecticidal composition according to claim 1 or 2, characterized in that The composition also contains pesticide adjuvants, wherein the pyriproxyfen and fluoxetine account for 1-99% by weight of the composition.

4. The insecticidal composition according to claim 3, characterized in that The auxiliary agent includes one or more of an emulsifier, a solvent, a wetting agent, a dispersant, a thickener, a stabilizer, an antifreeze agent, and a defoaming agent.

5. The insecticidal composition according to claim 4, characterized in that The invention can be made into suitable dosage forms for pesticides.

6. The insecticidal composition according to claim 5, characterized in that The dosage form is one of suspension, suspoemulsion, aqueous emulsion, microemulsion, dispersible oil suspension, microcapsule suspension, microcapsule suspension-suspension, wettable powder or water-dispersible granule.

7. Use of the insecticide composition according to any one of claims 1 to 6 in controlling crop pests.

8. The use according to claim 7, characterized in that The crops are vegetables.

9. The use according to claim 7 or 8, characterized in that The vegetables are cruciferous vegetables, preferably choy sum, cabbage, and pakchoy.

10. The use according to any one of claims 7 to 9, characterized in that: The pests are one or more of the group consisting of diamondback moth, beet armyworm, thrips, whitefly, leafminer, flea beetle, red spider and rust mite.

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