Application of alkyl glycoside compound

Abstract

The invention discloses application of an alkyl glycoside compound, belongs to the technical field of pesticides, particularly relates to application in insecticides, and provides a structural formula of the alkyl glycoside compound and an insecticide taking the alkyl glycoside compound as an effective component or an insecticide taking the alkyl glycoside compound and a common pesticide variety as effective components. The crop pest control effect of the pesticide preparation product is improved, and meanwhile the pesticide resistance of pests to the pesticide preparation product is slowed down.

Description

[0001] This application is a divisional application of the Chinese patent application with application number 202010431941.6, application date May 20, 2020, and invention name “Application of an alkyl glycoside compound”, in which the parent case claims the domestic priority of the Chinese application with application number 202010192137.7 and application date March 18, 2020. Technical Field

[0002] The invention belongs to the technical field of pesticides, and in particular to a new use of an alkyl glycoside compound as a main active substance for directly preventing and controlling crop diseases and insect pests. Background Art

[0003] Chemical pesticides play an important role in killing insects and fungi on crops, but some pesticides are prone to drug resistance after long-term use. Even if the dosage is increased, their insecticidal and fungicidal effects still cannot achieve the desired effect, and also lead to an increase in pesticide residues on crops. In order to avoid or delay the occurrence and development of pest resistance, protect the ecology and extend the service life of conventional pesticides, seeking alternative chemical pesticides or mixing new pesticide adjuvants with conventional pesticides is one of the effective measures currently in place.

[0004] The Chinese invention patent with the announcement date of CN102696703 provides an insecticide composition for preventing and controlling agricultural and forestry pests and its use, comprising bamboo yellow extract, fungus, stabilizer, penetrant, and solvent, wherein the penetrant contains alkyl glycoside. It is not disclosed that it has insecticidal effect.

[0005] Therefore, it is necessary to develop a new type of compound to improve the effectiveness of pesticide formulations in preventing and controlling crop diseases and pests, while slowing down the development of resistance of pests and diseases to pesticide formulations. Summary of the invention

[0006] In order to solve the above technical problems, the present invention provides an application of an alkyl glycoside compound, which can be used as an active ingredient of the pesticide and can be directly diluted with water and applied to crops; it can also be mixed with pesticide preparation products on the market and applied to crops together, which can improve the prevention effect of the pesticide preparation on pests and diseases, and reduce the resistance of pests and diseases to the pesticide preparation.

[0007] In order to achieve the above purpose, the following technical solutions are provided:

[0008] An application of an alkyl glycoside compound in a pesticide for controlling pests, wherein the alkyl glycoside compound has a structure shown in the following general formula (I):

[0009] (I) Where n = 1 ~ 5, R is C 8 ~C 16The alkyl glycoside compound is used as an active ingredient to prepare a pesticide for controlling pests.

[0010] Furthermore, the structural formula of the alkyl glycoside compound is any one of the following:

[0011] 1) Where n = 1, R = C 8 , whose structural formula is:

[0012]

[0013] Or 2) where n = 1.4, R = C 8 , whose structural formula is:

[0014]

[0015] or 3) where n = 1.6, R = C 10 , whose structural formula is:

[0016]

[0017] Or 4) where n = 1.8, R = C 12 , whose structural formula is:

[0018]

[0019] or 5) where n = 2.0, R = C 12 , whose structural formula is:

[0020]

[0021] Furthermore, the method for using the alkyl glycoside compound in pesticides for controlling pests is characterized in that the alkyl glycoside compound is used to prepare a pesticide composition or an insecticide.

[0022] The invention provides a pesticide composition, which comprises component A: 15% to 99% by weight of an alkyl glycoside compound or a combination thereof, and component B: at least one of a conventional pesticide and / or an acceptable adjuvant.

[0023] Furthermore, the conventional pesticides described in component B include amide insecticides, organophosphorus insecticides, nicotine insecticides, benzoylurea insecticides, pyrethroid insecticides, macrolide insecticides, other insecticides or acaricides.

[0024] The amide insecticide of the present invention is selected from cyclobromofenac, chlorantraniliprole, cyantraniliprole, tetrachlorantraniliprole, flubendiamide and flubendiamide.

[0025] The organophosphorus insecticide is selected from chlorpyrifos, triazophos, dichlorvos, malathion, phoxim and propylbromophos.

[0026] The nicotinoid insecticide is selected from thiamethoxam, clothianidin, dinotefuran, imidacloprid, nitenpyram, acetamiprid, and thiacloprid.

[0027] The benzoylurea insecticide is selected from diflubenzuron, lufenuron, flufenoxuron, flufenoxuron, fluflumuron, fluacryluron, perflumuron, flubendiamide, and fluazifop-urea.

[0028] The pyrethroid insecticide is selected from the group consisting of highly effective cyhalothrin, highly effective cypermethrin, cyfluthrin and bifenthrin.

[0029] The macrolide insecticide is selected from avermectin and avermectin.

[0030] The other types of insecticides are selected from chlorfenapyr and pymetrozine.

[0031] The acaricide is selected from spirotetramat, spirodiclofen, etoxazole, bifenazate, triazotin, clofentezine, and propargite.

[0032] The acceptable adjuvants used in the present invention are commonly used in the field of pesticide processing, such as dispersants, emulsifiers, solvents, carriers, fillers, stabilizers, defoamers, and adhesives. Conventional pesticides and acceptable adjuvants used in the present invention are directly purchased from pesticide companies and used directly.

[0033] Furthermore, the method for using the pesticide composition is: diluting component A with water by 200-1000 times, diluting component B with water, and then mixing the diluted substances together for spraying to prevent and control crop diseases and insect pests.

[0034] The invention provides an insecticide, which is the alkyl glycoside compound or a combination thereof.

[0035] Furthermore, the method for using the insecticide is: diluting it with water 200-1000 times and then spraying it for preventing and controlling crop diseases and insect pests.

[0036] Furthermore, the insecticide is a liquid preparation or a solid preparation.

[0037] Furthermore, the liquid preparations include aqueous solutions, microemulsions, and suspensions, and the solid preparations include water-dispersible granules and wettable powders.

[0038] The present invention has the following beneficial effects:

[0039] 1. The alkyl glycoside compounds of the present invention can be used as active ingredients of insecticides; they can also be used as active ingredients of pesticides and mixed with conventional pesticides and pesticide-acceptable adjuvants during the preparation of pesticides to prepare pesticide compositions.

[0040] 2. When the alkyl glycoside compounds of the present invention are used as active ingredients of insecticides, the control effect of the compounds diluted 200-1000 times with water on crop diseases and insect pests is equivalent to that of conventional pesticide preparations.

[0041] 3. When the alkyl glycoside compounds of the present invention are used as components in pesticide compositions, they can be diluted with water and mixed with the diluted pesticide formulation for use, which not only improves the preventive effect of the pesticide formulation on pests and diseases, but also reduces the resistance of pests and diseases to the pesticide formulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 It is the general structural formula (I) of the alkyl glycoside compound of the present invention.

[0043] Figure 2 It is the structural formula of compound a in the embodiment of the present invention.

[0044] Figure 3 It is the structural formula of compound b in the embodiment of the present invention.

[0045] Figure 4 It is the structural formula of compound c in the embodiment of the present invention.

[0046] Figure 5 It is the structural formula of compound d in the examples of the present invention.

[0047] Figure 6 It is the structural formula of compound e in the embodiment of the present invention. DETAILED DESCRIPTION

[0048] The present invention is further described below in conjunction with embodiments.

[0049] 1. Indoor toxicity test

[0050] 1. Determination of the activity of alkyl glycoside compounds against cabbage aphids

[0051] Test method: Use the leaf dipping method to prepare a certain amount of compound into 1000mg / L, 500mg / L, and 250mg / L test solutions, and these test solutions are placed in a 250ml beaker. Break fresh and clean cabbage leaves into 5cm diameter discs, immerse them in each gradient solution for 15s, take them out and dry them at room temperature, then place them in a 5cm diameter culture dish with moist filter paper, repeat 4 times for each concentration, and inoculate 30 healthy, active, and uniformly sized nymphs in each dish, and place them in a constant temperature box for breeding, the temperature is (25±1)℃, and the humidity is controlled at 70%-80%. The light-dark cycle ratio L:D=14h:10h (timing controller). Raise for 48h. Repeat 4 times for each treatment. Check the results 48h after treatment and calculate the mortality rate, see Table 1. The criterion for judging the death of the test insect is: touch the insect body with a fine brush, and record death if there is no reaction.

[0052] Test drugs: Alkyl glycoside compounds ae, in the order of Figure 2-6 The control group was a drug group containing the corresponding acetamiprid; the control group was a solvent group containing 0.1% Tween 80 aqueous solution containing the corresponding acetone.

[0053] Table 1 Results of the toxicity test of alkyl glycosides against cabbage aphids

[0054]

[0055] From the test results in Table 1, it can be seen that the alkyl glycoside compound ae of the present invention has different degrees of toxicity to cabbage aphids, and the lethal concentration of cabbage aphids is about LC 50 =562mg / L, its toxicity to cabbage aphids at 1000mg / L and 500mg / L is comparable to that of acetamiprid, and has good application prospects.

[0056] 2. Determination of the activity of alkyl glycoside compounds against citrus whitefly

[0057] Test method: Use the drug film method. First, soak the citrus buds in the same drug solution for 1 minute, wrap the base of the buds with cotton soaked in the same drug solution to keep them moist, and wait for the citrus buds to dry naturally to obtain the poisoned citrus buds; secondly, take a cylindrical transparent glass bottle, add 50mL of the prepared drug solution, cover the lid tightly, gently turn the bottle, and then invert it for 30 seconds to make the inner wall of the bottle sticky with the drug solution, then pour out the drug solution and let the bottle dry naturally. After the bottle is dry, put the poisoned citrus buds into the bottle for later use. Treatment of citrus whiteflies adults: The collected citrus whiteflies adults are treated with CO 2After anesthesia (8-10s), put them into the bottles of each treatment. Wrap the mouth of each bottle with double gauze and tie it with rubber rope. Repeat each treatment 3 times, with 30 adults each time. Check for dead insects after 30 minutes, and record the number of live insects before medication. Then place the bottles of each treatment in a (25±1)℃ light incubator for 24 hours, and then investigate the mortality rate. Record the results in Table 2.

[0058] Test reagents: Alkyl glycoside compounds ae, in the order of Figure 2-6 The substance with the structural formula; the drug control group was soaked with the corresponding chlorpyrifos; the solvent control group was soaked with the corresponding acetone 0.1% Tween 80 aqueous solution; the blank control group was soaked with the corresponding sterile water. (The tender shoots and the cotton wrapped around the base of the tender shoots were soaked in the control group and then dried, and placed in the bottle of the control group that was washed and dried)

[0059] Table 2 Results of the 24-hour lethal activity test of alkyl glycoside compounds against whitefly adults

[0060]

[0061]

[0062] From the test results in Table 2, it can be seen that the alkyl glycoside compounds of the present invention have different degrees of toxicity to citrus whitefly, and the lethal concentration to citrus whitefly is about LC 50 =420mg / L, among which the toxicity against citrus whitefly at 720mg / L and 360mg / L is equivalent to that of chlorpyrifos, and has good application prospects.

[0063] 3. Determination of the activity of alkyl glycoside compounds in controlling citrus red spider mites

[0064] Test method: refer to "NY / T1154.13-2008NY / T 1154.12-2008 Pesticide Indoor Bioassay Test Guidelines Insecticides Part 12: Leaf Disk Spray Method". The test results are recorded in Table 3.

[0065] Test reagents: Alkyl glycoside compounds ae, in the order of Figure 2-6 The corresponding mineral oil was used as the drug control group; the corresponding 0.1% Tween 80 aqueous solution of acetone was used as the solvent control group; and the corresponding sterile water was used as the blank control group.

[0066] Table 3 Toxicity determination of alkyl glycoside compounds to citrus red spider

[0067]

[0068] From the test results in Table 3, it can be seen that the alkyl glycoside compounds of the present invention have different degrees of toxicity to citrus red spiders, and the lethal concentration to citrus red spiders is about LC 50 =480mg / L, among which at 800mg / L, the toxic activity against citrus whitefly is equivalent to that of mineral oil. At 400mg / L and 200mg / L, the toxic activity of alkyl glycoside compounds is much higher than that of mineral oil, and has a good application prospect.

[0069] 4. Determination of the activity of alkyl glycosides against Spodoptera exigua

[0070] Test method: "NY / T1154.6-2006 Pesticide Indoor Bioassay Test Guidelines Insecticides Part 6: Insecticide Activity Test Insect Dipping Method". The test results are recorded in Table 4.

[0071] Test reagents: Alkyl glycoside compounds ae, in the order of Figure 2-6 The corresponding highly effective cypermethrin was used as the drug control group; the corresponding 0.1% Tween 80 aqueous solution of acetone was used as the solvent control group; and the corresponding sterile water was used as the blank control group.

[0072] Table 4 Toxicity determination against beet armyworm larvae at 48 h

[0073]

[0074] From the test results in Table 4, it can be seen that the alkyl glycoside compounds of the present invention have different degrees of toxicity against Spodoptera exigua, and the lethal concentration for Spodoptera exigua is about LC 50 =750mg / L, among which the toxicity to beet armyworm at 1200mg / L is equivalent to that of high-efficiency cypermethrin, and has good application prospects.

[0075] 5. Indoor activity determination of alkyl glycosides mixed with conventional pesticides

[0076] Evaluation criteria: when CTC≤80, the combination exhibits an antagonistic effect; when 80<CTC<120, the combination exhibits an additive effect; when CTC≥120, the combination exhibits a synergistic effect.

[0077] According to the formula:

[0078] Measured toxicity index (ATI) = (standard agent LC 50 / Test reagent LC 50 )×100;

[0079] Theoretical toxicity index (TTI) = toxicity index of agent A × percentage of A in the mixture + toxicity index of agent B × percentage of B in the mixture;

[0080] Co-toxicity coefficient (CTC) = [actual toxicity index (ATI) of the mixture / theoretical toxicity index (TTI) of the mixture] × 100.

[0081] Test method: Use the leaf dipping method to weigh a certain amount of compound to prepare 1000mg / L, 500mg / L, 250mg / L, and 125mg / L test solutions, and these test solutions are placed in a 250ml beaker. Break fresh and clean cabbage leaves into 5cm diameter discs, immerse them in each gradient solution for 15s, take them out and dry them at room temperature, then place them in a 5cm diameter culture dish with moist filter paper, repeat 4 times for each concentration, and inoculate 30 healthy, active, and uniformly sized nymphs in each dish, and place them in a constant temperature box for breeding, the temperature is (25±1)℃, and the humidity is controlled at 70%-80%. The light-dark cycle ratio L:D=14h:10h (timing controller). Feed for 48h. Repeat 4 times for each treatment. Check the results 48h after the treatment, and the criterion for judging the death of the test insects is: touch the insect body with a fine brush, and no reaction is recorded as death.

[0082] Test drug: Compound ad, whose structural formula is as follows Figure 2-5 As shown: pymetrozine (G), thiamethoxam (H), dinotefuran (J), clothianidin (L). The combination of each group of drugs and their mass ratio are shown in Table 5, and the test results are shown in Table 5.

[0083] Table 5 Results of toxicity test on cabbage aphids

[0084]

[0085]

[0086]

[0087] From the test results in Table 5, it can be seen that when the alkyl glycoside compounds of the present invention are mixed with conventional pesticide ingredients such as pymetrozine, dinotefuran, thiamethoxam, clothianidin, etc., the co-toxicity coefficient for controlling cabbage aphids is greater than 120, and the synergistic effect is obvious.

[0088] 6. Results of indoor toxicity test of alkyl glycosides mixed with conventional pesticides to control citrus red spider mites

[0089] Test method: Refer to "NY / T1154.13-2008NY / T 1154.12-2008 Pesticide Indoor Bioassay Test Guidelines Insecticides Part 12: Leaf Disc Spray Method".

[0090] Test drugs: Compounds b and c, whose structural formulas are as follows Figure 2 , Figure 3As shown in Table 6, spirotetramat (L), spirotetramat (M). The combination of each group of drugs and their mass ratio are shown in Table 6, and the test results are shown in Table 6.

[0091] Table 6 Results of toxicity test on nymphs of citrus red spider

[0092]

[0093]

[0094] As shown in Table 6, the alkyl glycoside compound bc mixed with spirotetramat and spirodiclofen has a strong anti-citrus red spider LC 50 The co-toxicity coefficient is greater than 120, and the synergistic effect is obvious.

[0095] 2. Preparation Examples of Pesticide Formulations

[0096] Example 1

[0097] A pesticide composition of 60% compound b·c aqueous solution comprises the following raw materials in percentage by weight: 25% compound b, 35% compound c, 3% nonylphenol polyoxyethylene, 3% calcium dodecylbenzene sulfonate, and water to make up to 100%.

[0098] The preparation method is as follows: the above materials are pumped into a mixing kettle and mixed evenly to obtain a 60% aqueous solution of compound b·c.

[0099] Example 2

[0100] A pesticide composition of 20% compound b aqueous solution comprises the following raw materials in percentage by weight: 20% compound b, 3% Nong Ru 2201, 2% Nong Ru 500#, and water makes up to 100%.

[0101] The preparation method is as follows: the above materials are pumped into a mixing kettle and mixed evenly to obtain a 20% compound B aqueous solution.

[0102] Example 3

[0103] A pesticide composition of 80% compound C aqueous solution comprises the following raw materials in percentage by weight: 80% compound C, 4% Nong Ru 2201, 1.5% Nong Ru 500#, and water makes up to 100%.

[0104] The preparation method is as follows: the above materials are pumped into a mixing kettle and mixed evenly to obtain an aqueous solution containing 80% of compound C.

[0105] Example 4

[0106] A pesticide composition of 50% compound a·d aqueous solution comprises the following raw materials in percentage by weight: 10% compound a, 40% compound d, 3% nonylphenol polyoxyethylene, 2% agricultural milk 500#, and water makes up to 100%.

[0107] The preparation method is as follows: the above materials are pumped into a mixing kettle and mixed evenly to obtain a 50% compound a·d aqueous solution.

[0108] Example 5

[0109] A pesticide composition of 25% compound e microemulsion comprises the following raw materials in percentage by weight: 25% compound e, 4% nonylphenol polyoxyethylene, 1% agricultural emulsion 500#, and water makes up to 100%.

[0110] The preparation method is as follows: the above materials are pumped into a mixing kettle and mixed evenly to obtain a 25% compound e microemulsion.

[0111] Example 6

[0112] A pesticide composition of 5% chlorantraniliprole ultra-low volume liquid comprises the following raw materials in percentage by weight: 20% compound B, 5% chlorantraniliprole, 10% dimethyl sulfoxide, 5% nonylphenol polyoxyethylene, 2% agricultural milk 500#, and methyl oleate making up to 100%.

[0113] The preparation method is as follows: the above materials are pumped into a mixing kettle and mixed evenly to obtain a 5% chlorantraniliprole ultra-low volume liquid.

[0114] Example 7

[0115] A pesticide composition of 25% thiamethoxam wettable powder comprises the following raw materials in percentage by weight: 15% compound C, 25% thiamethoxam, 5% alkylnaphthalene sulfonate, 1% sodium dodecyl sulfate, 2% calcium dodecylbenzene sulfonate, and kaolin making up to 100%.

[0116] The preparation method is as follows: the above materials are mixed evenly, and the mixture is crushed evenly by a jet mill to obtain 25% thiamethoxam wettable powder.

[0117] Example 8

[0118] A pesticide composition of 20% dinotefuran-chlorfenapyr suspension comprises the following raw materials in percentage by weight: 5% compound B, 10% dinotefuran, 10% chlorfenapyr, 2.5% alkylbenzene sulfonate, 4% polyoxyethylene fatty alcohol ether, 1.3% sodium lignin sulfonate, 3% ethylene glycol, 0.5% xanthan gum, and water is added to 100%.

[0119] The preparation method is as follows: the above materials are mixed, mixed evenly by high-speed shearing, and then ground in a ball mill for 2 to 3 hours to make the particle diameters meet the standard requirements, thereby obtaining a 20% dinotefuran·chlorfenapyr suspension.

[0120] Example 9

[0121] A pesticide composition of a 40% compound a suspension comprises the following raw materials in percentage by weight: 40% compound a, 3% sodium dodecyl sulfate, 4% alkylbenzene sulfonate, 1% lignin sulfonate, 0.2% xanthan gum, and water is added to 100%.

[0122] The preparation method is as follows: the above materials are mixed evenly by high-speed shearing, and then the balls are ground in a ball mill for 2 to 3 hours to make the particle diameters meet the standard requirements.

[0123] Example 10

[0124] A pesticide composition of 99% compound C aqueous solution comprises the following raw materials in weight percentage: 99% compound C and water to make up 100%.

[0125] The preparation method is as follows: the above materials are pumped into a mixing kettle and mixed evenly to obtain a 99% compound C aqueous solution.

[0126] 3. Application Examples

[0127] Application 1

[0128] Test method: Refer to "GB / T17980.9-2000 Guidelines for Field Efficacy Tests of Pesticides (I) Insecticides for Control of Lepidoptera Larvae on Cruciferous Vegetables" for the test on control of beet armyworm larvae on cruciferous vegetables.

[0129] Preparation of test reagents:

[0130] Agent 1: dilute the 5% chlorfenapyr ultra-low volume liquid of Example 6 with water 400 times.

[0131] Agent 2: The 20% compound b aqueous solution of Example 2 was diluted 200 times with water, and then the 5% chlorfenapyr ultra-low volume liquid (registration number PD20183948, manufacturer: Guangxi Tianyuan Biochemical Co., Ltd.) was also diluted 200 times with water, and then the two were mixed together in a 1:1 volume ratio, stirred evenly and set aside.

[0132] Agent 3: The 20% aqueous solution of compound b prepared in Example 2 was diluted 400 times with water.

[0133] Control agent 1: Dilute the commercially available 35% chlorantraniliprole water dispersible granules (PD20172200, manufacturer: Yanhua Yongle (Leting) Biotechnology Co., Ltd.) with water 2800 times.

[0134] Control agent 2: Dilute the commercially available 5% chlorantraniliprole ultra-low volume liquid (registration number PD20183948, manufacturer: Guangxi Tianyuan Biochemical Co., Ltd.) with water 400 times.

[0135] Test results: 3 days after the application, the control effects of Agent 1, Agent 2, Agent 3, Control Agent 1 and Control Agent 2 on beet armyworm larvae were 91.33%, 93.51%, 71.6%, 82.80% and 81.57%, respectively. The test results show that compound b can be used in the preparation of insecticides, and can also be used alone as an insecticide to control beet armyworms. Secondly, it can be diluted with water and mixed with pesticide preparations on the market such as 5% chlorfenapyr ultra-low volume liquid (registration certificate number PD20183948, manufacturer: Guangxi Tianyuan Biochemical Co., Ltd.) and other agents, and diluted with water for use. It has a wide range of applications and an ideal effect in controlling pests.

[0136] Application 2

[0137] Test method: Refer to "NY / T1464.51-2014 Pesticide Field Efficacy Test Guidelines Part 51: Insecticides for Control of Citrus Aphids".

[0138] Preparation of test reagents:

[0139] Agent 4: The 80% aqueous solution of compound c in Example 3 was diluted 1000 times with water.

[0140] Agent 5: Dilute the 80% compound c aqueous solution of Example 3 500 times with water, and then dilute the 25% thiamethoxam wettable powder (registration number PD20172724, manufacturer: Guangxi Tianyuan Biochemical Co., Ltd.) 500 times with water, and then mix the two together in a volume ratio of 1:1, stir evenly and set aside.

[0141] Agent 6: dilute the 25% thiamethoxam wettable powder of Example 7 with water 1000 times.

[0142] Control agent 3: dilute 25% thiamethoxam wettable powder (registration number PD20172724, manufacturer: Guangxi Tianyuan Biochemical Co., Ltd.) with water 1000 times.

[0143] Control agent 4: dilute 25% thiamethoxam wettable powder (registration number PD20181979, manufacturer: Henan Xifunong Biotechnology Co., Ltd.) with water 1000 times.

[0144] Test results: 5 days after the application, the control effects of agent 4, agent 5, agent 6, control agent 3 and control agent 4 on citrus aphids were 76.21%, 94.55%, 96.17%, 93.43% and 95.3%, respectively. The test results show that compound c can be used in the preparation of insecticides, and can also be used alone as an insecticide to control crop pests. Secondly, it can be diluted with water and mixed with pesticide preparations on the existing market, such as 25% thiamethoxam wettable powder (registration certificate number PD20172724, manufacturer: Guangxi Tianyuan Biochemical Co., Ltd.) and 25% thiamethoxam wettable powder (registration certificate number PD20181979, manufacturer: Henan Xifunong Biotechnology Co., Ltd.) after dilution. It has a wide range of applications, and the effect of controlling pests alone is ideal, and it can delay the development of pesticide resistance in the existing market and improve the control effect.

[0145] 4. Field efficacy test:

[0146] 1. Field efficacy test for controlling pests of cruciferous vegetables

[0147] Test method: "NY / T 1464.27-2010 Guidelines for Field Efficacy Tests of Pesticides. Part 27: Insecticides for Control of Aphids on Cruciferous Vegetables".

[0148] Control agent 5: 15% acetamiprid emulsifiable concentrate (registration number PD20131102, manufacturer: Guangxi Tianyuan Biochemical Co., Ltd.) The agents used are shown in Table 7, and the test results are shown in Table 7.

[0149] Table 7 Test results for controlling aphids on cruciferous vegetables

[0150]

[0151] As can be seen from Table 7, the alkyl glycoside compound ae of the present invention has a control effect on aphids of cruciferous vegetables at a dosage of 200 g / mu and that of acetamiprid at a dosage of 30 g / mu, indicating that the alkyl glycoside compound of the present invention has considerable application prospects.

[0152] Although the above describes the specific implementation mode of the present invention in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art on the basis of the technical solution of the present invention without creative work are still within the scope of protection of the present invention.

Claims

1. An alkyl glycoside compound used as an active ingredient in preparing a pesticide for controlling pests, wherein the alkyl glycoside compound has a structure shown in the following general formula (I): (I) Where n = 1 ~ 5, R is C8 ~ C 16 A straight or branched saturated or unsaturated alkane chain.

2. The alkyl glycoside compound as an active ingredient for preparing a pesticide for controlling pests according to claim 1, characterized in that: The structural formula of the alkyl glycoside compound is any one of the following: 1) In the formula, n=1, R=C8, and its structural formula is: Or 2) wherein n=1.4, R=C8, and its structural formula is: Or 3) where n = 1.6, R = C 10 , whose structural formula is: Or 4) where n = 1.8, R = C 12 , whose structural formula is: or 5) where n = 2.0, R = C 12 , whose structural formula is:

3. A pesticide composition, characterized in that: The invention comprises: component A: the alkyl glycoside compound according to claim 1 or 2 or a combination thereof; component B: conventional pesticides, wherein the conventional pesticides are pymetrozine, thiamethoxam, dinotefuran, clothianidin, spirotetramat and spirodiclofen; and the weight ratio of component A to component B is a synergistic effective amount.

4. The pesticide composition according to claim 3, characterized in that The weight ratio of component A to component B is 80:1-1:

60.

5. The pesticide composition according to claim 4, characterized in that Component A is the alkyl glycoside compound 2) according to claim 2, wherein n=1.4, R=C8, and its structural formula is: Component B is pymetrozine, and the weight ratio of component A to component B is 70:1-1:50; or, Component A is the alkyl glycoside compound 1) according to claim 2, wherein n=1, R=C8, and its structural formula is: Component B is thiamethoxam, and the weight ratio of component A to component B is 50:1-1:60; or, Component A is the alkyl glycoside compound according to claim 2, wherein n=1.8, R=C 12 , whose structural formula is: Component B is dinotefuran, and the weight ratio of component A to component B is 50:1-1:60; or, Component A is the alkyl glycoside compound according to claim 2 3) wherein n=1.6, R=C 10 , whose structural formula is: Component B is clothianidin, and the weight ratio of component A to component B is 50:1-1:50; or, Component A is the alkyl glycoside compound 2) according to claim 2, wherein n=1.4, R=C8, and its structural formula is: Component B is spirotetramat, and the weight ratio of component A to component B is 80:1-1:50; or, Component A is the alkyl glycoside compound according to claim 2 3) wherein n=1.6, R=C 10 , whose structural formula is: Component B is spirodiclofen, and the weight ratio of component A to component B is 70:1-1:

50.

6. A pesticide composition, characterized in that: The pesticide composition comprises: component A: 15% to 99% by weight of the alkyl glycoside compound or a combination thereof according to claim 1 or 2, or the pesticide composition according to any one of claims 3 to 5; and component B: an acceptable adjuvant.

7. The pesticide composition according to claim 6, characterized in that: The pesticide composition is a liquid preparation or a solid preparation.

8. The pesticide composition according to claim 7, characterized in that: The liquid preparations include aqueous solutions, microemulsions, and suspensions, and the solid preparations include water-dispersible granules and wettable powders.

9. Use of the alkyl glycoside compound according to any one of claims 1 to 2 in pesticides for controlling pests, wherein the pests include cabbage aphids, citrus whiteflies, citrus red spiders, beet armyworms, etc.

10. The use according to claim 9, wherein the alkyl glycoside compound according to any one of claims 1 to 2 is diluted 200 to 1000 times with water and then sprayed for preventing and controlling crop diseases and insect pests.

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