Pesticide composition containing mesoionic compound and application thereof

Abstract

The invention belongs to the technical field of pesticide disinfestation, and discloses a pesticide composition containing a mesoionic compound and application thereof.The pesticide composition comprises an active ingredient A and an active ingredient B. The active ingredient A is isoflualanam, the active ingredient B is the mesoionic compound, and the active ingredient A is isoflualanam or isoflualanam or isoflualanam or isoflualanam or isoflualanam or isoflualanam or isoflualanam or isoflualanam or isoflualanam or isoflualanam or isoflualanam. The active component B is a meso-ionic compound, the meso-ionic compound is any one of trifluorobenzene pyrimidine, dicloromezotiaz and fenmezoditiaz, and the mass ratio of the active component A to the active component B is (1: 40)-(40: 1). The pesticide composition disclosed by the invention has a remarkable synergistic effect on hemiptera pest rice planthopper, the control effect is greatly improved, and the production cost is reduced while the development of drug resistance of pests is slowed down.

Description

Technical Field

[0001] The invention belongs to the technical field of pesticide killing, and discloses a pesticide composition containing mesoionic compounds and application thereof. Background Art

[0002] Rice is widely planted in my country and is one of the main sources of income for farmers in some regions. There are many factors that affect rice yield and quality, including pests, such as rice leaf rollers and rice planthoppers. The rice planthoppers currently appearing in my country include brown planthoppers, gray planthoppers and white-backed planthoppers. Rice planthoppers suck the sap from rice leaves, affecting the transport of nutrients and water, causing the plants to grow short and slow, or even wither and die. While sucking the sap, the pests also secrete solid saliva to form a mouth needle sheath. After the wounds on the leaves appear, it is difficult to heal, affecting tissue activity, causing the rice leaves to lose moisture and turn yellow, the base will rot, and the rice plants will fall and die. Rice planthoppers can carry toothed leaf dwarf disease or grassy bushy dwarf disease viruses, and the feces they excrete can also cause sooty mold, which seriously affects the healthy growth of rice.

[0003] For many years, the main pesticides used to control rice planthoppers have been thiamethoxam and imidacloprid, in addition to carbamates and nicotine pesticides. However, long-term and large-scale use has led to a gradual increase in the resistance of rice planthoppers to pesticides, and the incidence has also tended to increase year by year. The increase in resistance has further led to a significant increase in the amount of pesticides used, an increase in the cost of control, and the control effect is not ideal, causing many problems. It is urgent to promote new pesticide compositions for killing rice planthoppers. Summary of the invention

[0004] Based on the problems existing in the prior art, the present invention provides a pesticide composition containing mesoionic compounds, which has a significant synergistic effect on the Hemiptera pest rice planthopper, can effectively delay the development of pest resistance, reduce pesticide usage, and reduce production costs.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a pesticide composition containing mesoionic compounds, wherein the active ingredients of the pesticide composition include active ingredient A and active ingredient B, the active ingredient A is isoflualanam, the active ingredient B is a mesoionic compound, the mesoionic compound is any one of triflurofen, dicloromezotiaz or fenmezoditiaz, and the mass ratio of the active ingredient A to the active ingredient B is 1:40 to 40:1.

[0006] Furthermore, the active ingredient B is trifluphenazine, and the mass ratio of the active ingredient A to the active ingredient B is 1:30 to 40:1;

[0007] The active ingredient B is dicloromezotiaz, and the mass ratio of the active ingredient A to the active ingredient B is 1:30 to 20:1;

[0008] The active ingredient B is fenmezoditiaz, and the mass ratio of the active ingredient A to the active ingredient B is 1:40 to 25:1.

[0009] Furthermore, the active ingredient B is trifluphenazine, and the mass ratio of the active ingredient A to the active ingredient B is 1:16 to 35:1;

[0010] The active ingredient B is dicloromezotiaz, and the mass ratio of the active ingredient A to the active ingredient B is 1:30 to 15:1;

[0011] The active ingredient B is fenmezoditiaz, and the mass ratio of the active ingredient A to the active ingredient B is 1:30 to 18:1.

[0012] Furthermore, the active ingredient B is trifluphenazine, and the mass ratio of the active ingredient A to the active ingredient B is 1:8 to 25:1;

[0013] The active ingredient B is dicloromezotiaz, and the mass ratio of the active ingredient A to the active ingredient B is 1:20 to 15:1;

[0014] The active ingredient B is fenmezoditiaz, and the mass ratio of the active ingredient A to the active ingredient B is 1:18 to 18:1.

[0015] Furthermore, based on 100 wt% of the total weight of the pesticide composition, the sum of the contents of the active ingredient A and the active ingredient B in the pesticide composition is 0.5-80 wt%.

[0016] Furthermore, the pesticide composition includes adjuvants in addition to the active ingredients, and the adjuvants are selected from one or more of wetting agents, dispersants, emulsifiers, thickeners, disintegrants, antifreeze agents, defoaming agents, solvents, preservatives, stabilizers, synergists or carriers.

[0017] The wetting agent is selected from one or more of alkylbenzene sulfonate, alkylnaphthalene sulfonate, lignin sulfonate, sodium dodecyl sulfate, sodium dioctyl succinate sulfonate, α-olefin sulfonate, alkylphenol polyoxyethylene ether, castor oil polyoxyethylene ether, alkylphenol ethoxylate, fatty alcohol ethoxylate, fatty alcohol polyoxyethylene ether sodium sulfate, silkworm feces, saponin powder, soapberry powder, SOPA, detergent, emulsifier 2000 series and wetting penetrant F; and / or

[0018] The dispersant is selected from one or more of lignin sulfonate, alkylnaphthalene sulfonate formaldehyde condensate, naphthalene sulfonate, tristyrylphenol ethoxylate phosphate, fatty alcohol ethoxylate, alkylphenol polyoxyethylene ether, alkylphenol polyoxyethylene ether methyl ether condensate sulfate, fatty amine polyoxyethylene ether, glycerol fatty acid ester polyoxyethylene ether, polycarboxylates, polyacrylic acid, phosphates, EO-PO block copolymers and EO-PO graft copolymers; and / or

[0019] The emulsifier is selected from one or more of calcium dodecylbenzene sulfonate, alkylphenol formaldehyde resin polyoxyethylene ether, phenylethylphenol polyoxyethylene polyoxypropylene ether, fatty alcohol ethylene oxide-propylene oxide copolymer, styrylphenol polyoxyethylene ether, castor oil polyoxyethylene ether and alkylphenol ether phosphate; and / or

[0020] The thickener is selected from one or more of xanthan gum, organobentonite, gum arabic, sodium alginate, magnesium aluminum silicate, carboxymethyl cellulose and white carbon black; and / or

[0021] The disintegrant is selected from one or more of sodium sulfate, ammonium sulfate, aluminum chloride, sodium chloride, ammonium chloride, bentonite, glucose, sucrose, starch, cellulose, urea, sodium carbonate, sodium bicarbonate, citric acid and tartaric acid; and / or

[0022] The antifreeze agent is selected from one or more of alcohols, alcohol ethers, chlorinated hydrocarbons and inorganic salts; and / or

[0023] The defoamer is selected from C 10 -C 20 Saturated fatty acid compounds, silicone oil, silicone compounds, C8-C 10 One or more of fatty alcohols; and / or

[0024] The solvent is selected from one or more of benzene, toluene, xylene, durene, methanol, ethanol, isopropanol, n-butanol, dimethyl sulfoxide, dimethylformamide, cyclohexanone, alkylene carbonate, diesel, solvent oil, vegetable oil, vegetable oil derivatives and water; and / or

[0025] The preservative is selected from one or more of propionic acid, sodium propionic acid, sorbic acid, sodium sorbic acid, potassium sorbic acid, benzoic acid, sodium benzoic acid, sodium p-hydroxybenzoic acid, methyl p-hydroxybenzoate, kasone and 1,2-benzisothiazolin-3-one; and / or

[0026] The stabilizer is selected from one or more of disodium hydrogen phosphate, oxalic acid, succinic acid, adipic acid, borax, 2,6-di-tert-butyl-p-cresol, triethanolamine oleate, epoxidized vegetable oil, kaolin, bentonite, attapulgite, white carbon black, talc, montmorillonite and starch; and / or

[0027] The synergist is selected from synergist phosphite, synergist ether; and / or

[0028] The carrier is selected from one or more of ammonium salts, ground natural minerals, ground artificial minerals, silicates, resins, waxes, solid fertilizers, water, organic solvents, mineral oils, vegetable oils and vegetable oil derivatives;

[0029] Furthermore, the pesticide composition can be prepared into any dosage form acceptable in agriculture, and the dosage form is a solid preparation or a liquid preparation;

[0030] Furthermore, the solid preparation includes powders, granules, pellets, tablets, strips, wettable powders, oil-dispersible powders, emulsion powders, water-dispersible granules, emulsion granules, water-dispersible tablets, soluble powders, soluble tablets or soluble granules;

[0031] The liquid preparations include soluble solutions, soluble gels, oils, film-spreading oils, emulsifiable concentrates, latexes, dispersible solutions, ointments, aqueous emulsions, oil emulsions, microemulsions, lipid suspensions, microcapsule suspensions, oil suspensions, dispersible oil suspensions, suspoemulsions, microcapsule suspension-suspensions, microcapsule suspension-water emulsions or microcapsule suspension-suspoemulsions;

[0032] Furthermore, the dosage form is that the liquid preparation is a suspension, and the solid preparation is a wettable powder or a water-dispersible granule.

[0033] The invention also discloses the application of the above pesticide composition in preventing and controlling plant pests.

[0034] Furthermore, the plant pests are Hemiptera pests.

[0035] Furthermore, the Hemiptera pest is rice planthopper.

[0036] The beneficial effects of the present invention are as follows:

[0037] 1. The pesticide composition of the present invention compounds single-dose compounds with different action preparations according to a reasonable ratio, has a significant synergistic effect, and significantly improves the control effect of a single dose;

[0038] 2. The pesticide composition of the present invention effectively reduces the amount of pesticides used, thereby reducing production costs and reducing environmental pollution;

[0039] 3. The pesticide composition of the present invention has a significant control effect on rice planthoppers, while reducing the development of drug resistance in target pests and extending the service life of a single agent. DETAILED DESCRIPTION

[0040] In order to make the technical solutions, objectives and advantages of the present invention more clearly understood, the present invention is described in conjunction with the following specific embodiments, but the present invention can be implemented in various forms and should not be limited by the embodiments described herein.

[0041] Preparation Example:

[0042] Preparation Example 1: 18% isoflualanam·trifluanidine suspension (1:8)

[0043] Formula composition: 2% isoflualanam, 16% trifluanidazole, 2% alkyl aryl polyoxyethylene ether polyoxypropylene ether, 2% tristyrylphenol ethoxylate phosphate, 1% sodium lauryl sulfate, 0.25% xanthan gum, 5% glycerol, 0.1% sodium sorbate, 0.5% silicone oil, and deionized water to make up the balance;

[0044] Preparation method: According to the formula ratio, the active ingredients, surfactants and other functional additives are placed in a reactor in sequence, water is added to mix evenly, and the suspension product is obtained by high-speed shearing, wet sand grinding, and finally homogenization filtration.

[0045] Preparation Example 2: 24% isoflualanam·trifluanidazole wettable powder (7:1)

[0046] Formula composition: 21% isoflualanam, 3% trifluanidine, 2% naphthalene sulfonate formaldehyde condensate, 5% sodium alkyl polyoxyethylene ether sulfonate, 3% pull open powder BX, 5% white carbon black, kaolin makes up the balance;

[0047] Preparation method: The active ingredients, dispersants, wetting agents and fillers are mixed according to the formula ratio, uniformly stirred in a stirring kettle, and pulverized and mixed uniformly for multiple times by a jet mill to prepare the wettable powder of the composition of the present invention.

[0048] Preparation Example 3: 33% isoflualanam·trifluanidine water dispersible granules (10:1)

[0049] Formula composition: 30% isoflualanam, 3% trifluanidine, 5% sodium lignin sulfonate, 2% succinate sulfonate, 8% sodium polycarboxylate, 3% sodium lauryl sulfate, 10% ammonium sulfate, and starch makes up the balance;

[0050] Preparation method: according to the formula ratio, the active ingredient is added to the carrier, and the surfactant and other functional additives are added thereto, mixed, and after air flow grinding, 10-25% of water is added, and then the water-dispersible granule product is obtained by kneading, granulating, drying and sieving; or the crushed powder is sprayed with water in a boiling granulator, granulated, dried, and then sieved to obtain the product.

[0051] Preparation Example 4: 15% isoflualanam·dicloromezotiaz suspension (3:2)

[0052] Formula composition: 9% isoflualanam, 6% dicloromezotiaz, 1% isotridecyl alcohol polyoxyethylene ether, 2% castor oil polyoxyethylene ether, 2% polyoxyethylene sorbitan monooleate, 2% tristyrylphenol ethoxylate phosphate, 1% sodium salt of polycarboxylate, 1% magnesium aluminum silicate, 0.25% xanthan gum, 1% sodium benzoate, 5% ethylene glycol, 0.5% silicone oil, and deionized water to make up the balance;

[0053] Preparation method: Same as Preparation Example 1.

[0054] Preparation Example 5: 38.5% isoflualanam·dicloromezotiaz wettable powder (1:10)

[0055] Formula composition: 3.5% isoflualanam, 35% dicloromezotiaz, 6% sodium lignin sulfonate, 3% sodium alkyl polyoxyethylene ether sulfonate, 2% fatty alcohol polyoxyethylene ether sulfate, 5% white carbon black, 20% starch, and kaolin makes up the balance;

[0056] Preparation method: Same as Preparation Example 2.

[0057] Preparation Example 6: 21% isoflualanam·dicloromezotiaz water dispersible granules (6:1)

[0058] Formula composition: 18% isoflualanam, 3% dicloromezotiaz, 8% succinate sulfonate, 3% pull open powder BX, 2% sodium dodecylbenzene sulfonate, 6% sodium lignin sulfonate, 5% white sugar, kaolin makes up the balance;

[0059] Preparation method: Same as Preparation Example 3.

[0060] Preparation Example 7: 22.5% isoflualanam·fenmezoditiaz suspension (8:1)

[0061] Formula composition: 20% isoflualanam, 2.5% fenmezoditiaz, 1% tristyrylphenol polyoxyethylene ether, 1% alkane fatty alcohol polyoxyethylene ether sulfate, 5% styrylphenol polyoxyethylene ether phosphate, 2% isomeric tridecanol polyoxyethylene ether, 0.25% xanthan gum, 1% magnesium aluminum silicate, 5% glycerol, 0.1% sodium benzoate, 0.5% silicone oil, and deionized water to make up the balance;

[0062] Preparation method: Same as Preparation Example 1.

[0063] Preparation Example 8: 38% isoflualanam·fenmezoditiaz wettable powder (1:18)

[0064] Formula composition: 2% isoflualanam, 36% fenmezoditiaz, 6% lignin sulfonate, 4% naphthalene sulfonate formaldehyde condensate, 3% sodium lauryl sulfate, 20% starch, kaolin makes up the balance;

[0065] Preparation method: Same as Preparation Example 2.

[0066] Preparation Example 9: 30% isoflualanam·fenmezoditiaz water dispersible granules (2:1)

[0067] Formula composition: 20% isoflualanam, 10% fenmezoditiaz, 3% fatty alcohol polyoxyethylene ether, 10% naphthalene sulfonate formaldehyde condensate, 3% styrene phenol polyoxyethylene ether sulfate, 2% sodium lignin sulfonate, 10% ammonium sulfate, and starch makes up the balance;

[0068] Preparation method: Same as Preparation Example 3.

[0069] Example 1: Indoor bioactivity assay of rice brown planthopper

[0070] Test target: Brown planthopper (Nilaparvata lugens), 3rd instar nymph.

[0071] Experimental drugs: trifluanid technical, diclomezotiaz technical, fenmezoditiaz technical, isoflualanam technical.

[0072] Test method: Take healthy, uniformly growing rice seedlings about 10 cm long, 15 plants as a group, wash and dry in a cool place for later use. Dissolve the test agent in a suitable solvent to prepare a mother solution of a certain concentration, and then dilute the mother solution with a 0.1% Tween-80 aqueous solution to 5 series. Soak the rice seedlings in the solution for 30 seconds, take them out and dry them, wrap the roots of the rice seedlings with absorbent cotton, soak the bottom in water and put them in a disposable plastic cup, inoculate each cup with about 30 standard 3rd instar mid-term nymphs and seal them with gauze, repeat each treatment 4 times, and use a 0.1% Tween-80 aqueous solution as a blank control. After inoculation, place them in an intelligent artificial climate box with a temperature of (28±1)℃, a relative humidity of 75%±5%, and a photoperiod of 16L:8D. Check the death after 48 hours, touch the insect body with a No. 0 brush, and those that are completely motionless are considered dead.

[0073] Calculation method:

[0074] According to the survey data, calculate the mortality rate of each treatment. Calculate as follows:

[0075]

[0076] Where:

[0077] P——mortality rate, in percentage (%);

[0078] K——indicates the number of dead insects, in units of heads;

[0079] N——represents the total number of insects treated, in heads.

[0080]

[0081] Where:

[0082] P1——adjusted mortality rate, in percentage (%);

[0083] P t ——Treatment mortality rate, expressed as percentage (%);

[0084] P0——blank control mortality rate, in percentage (%).

[0085] If the control mortality rate is less than 5%, no correction is required; if the control mortality rate is between 5% and 20%, correction should be made according to the correction mortality formula; if the control mortality rate is greater than 20%, the test needs to be repeated.

[0086] Analyze with statistical analysis system to obtain toxicity regression equation, correlation coefficient and LC 50 Value, to evaluate the activity of the test agent on the biological test material.

[0087] The co-toxicity coefficient (CTC value) of the mixture is calculated as follows:

[0088]

[0089] Where:

[0090] ATI——Actual Toxicity Index of Mixture;

[0091] S——LC of standard pesticide 50 , the unit is milligrams per liter (mg / L);

[0092] M——LC of the mixture 50 , the unit is milligrams per liter (mg / L).

[0093] TTI=TI A ×P A +TI B ×P B

[0094] Where:

[0095] TTI – Theoretical Toxicity Index of Mixtures;

[0096] TI A ——A: toxicity index of the agent;

[0097] P A ——The percentage of agent A in the mixture, in percentage (%);

[0098] TI B ——Toxicity index of agent B;

[0099] P B ——The percentage of agent B in the mixture, in percentage (%).

[0100]

[0101] Where:

[0102] CTC – Co-toxicity coefficient;

[0103] ATI——Actual Toxicity Index of Mixture;

[0104] TTI - Theoretical Toxicity Index of Mixture.

[0105] The co-toxicity coefficient of the compound is CTC ≥ 120, which shows a synergistic effect; CTC ≤ 80 shows an antagonistic effect; 80 < CTC < 120 shows an additive effect. The results of the indoor test are shown in the following table:

[0106] Table 1 Results of indoor biological activity test of isoflualanam and trifluanid against rice brown planthopper

[0107]

[0108]

[0109] The results of the indoor test show that the combination of isoflualanam and triflufenazine has a significant synergistic effect on rice brown planthoppers at an appropriate mass ratio. The mass ratio of isoflualanam to triflufenazine is 1:30-40:1, and the co-toxicity coefficient to brown planthoppers is greater than 120, showing a synergistic effect; the mass ratio of isoflualanam to triflufenazine is 1:16-35:1, and the co-toxicity coefficient is greater than 130, showing a significant synergistic effect; the mass ratio of isoflualanam to triflufenazine is 1:8-25:1, and the co-toxicity coefficient is greater than 140, showing a significant synergistic effect.

[0110] Table 2 Results of indoor bioactivity test of isoflualanam and fenmezoditiaz against rice brown planthopper

[0111]

[0112] The results of indoor biological activity tests show that the combination of isoflualanam and fenmezoditiaz has a significant synergistic effect on rice brown planthoppers at an appropriate mass ratio. The co-toxicity coefficient of isoflualanam and fenmezoditiaz at a mass ratio of 1:40-25:1 on brown planthoppers is greater than 120, showing a synergistic effect; the mass ratio of isoflualanam and fenmezoditiaz is 1:30-18:1, the co-toxicity coefficient is greater than 130, and the synergistic effect is obvious; the mass ratio of isoflualanam and fenmezoditiaz is 1:18-18:1, the co-toxicity coefficient is greater than 140, and the synergistic effect is significant.

[0113] Table 3 Results of indoor biological activity test of isoflualanam and dicloromezotiaz on brown planthopper

[0114]

[0115]

[0116] The results of the indoor test showed that the compounding of isoflualanam and dicloromezotiaz at the appropriate mass ratio had a significant synergistic effect on brown planthoppers. The mass ratio of isoflualanam to dicloromezotiaz was 1:30-20:1, and the co-toxicity coefficient against rice planthoppers was greater than 120, showing a synergistic effect; the mass ratio of isoflualanam to dicloromezotiaz was 1:30-15:1, and the co-toxicity coefficient was greater than 130, showing a significant synergistic effect; the mass ratio of isoflualanam to dicloromezotiaz was 1:20-15:1, and the co-toxicity coefficient was greater than 140, showing a significant synergistic effect.

[0117] Example 2: Field test on efficacy of controlling rice planthoppers

[0118] Test location: The test site is located in Group 3, Xifeng Village, Simaqiao Town, Dao County, Yongzhou City, Hunan Province. The soil fertility of the test site is above average, and drainage and irrigation are convenient.

[0119] Experimental crops: Rice (Taiyou 2068).

[0120] Test target: Rice planthopper.

[0121] Experimental design: The experiment was repeated 4 times, with a total of 32 plots and a plot area of ​​63m 2 The plots are arranged in random blocks (7m×9m) and separated by mud ridges, with protective rows of more than 1m around them.

[0122] When applying pesticides, a 3WBD-16 backpack electric sprayer was used to spray evenly, with a spray volume of 657kg / hm 2 When applying the pesticide, keep a 3-5 cm water layer in the field and maintain it for 1 week after applying the pesticide.

[0123] Experimental investigation: The field was investigated 4 times in total. The pesticide was applied on September 12, 2023. The insect population base was investigated before the pesticide was applied, and the number of live insects was investigated 7d, 14d, and 21d after the pesticide was applied.

[0124] Survey method: 10 points were surveyed in each plot using the parallel jumping method, with 2 clusters at each point. The survey time was fixed at 8:00-10:00 AM. Fixed investigators were used for each survey (to reduce survey errors). During the survey, an enamel tray was placed under the rice and slapped 3 times in the direction of the enamel tray to make the rice planthoppers fall into the enamel tray, and the number of live insects was counted.

[0125] The pesticide damage survey is carried out every day to record whether the rice plants in each plot have pesticide damage symptoms such as leaf blight, plant dwarfing, leaf deformity, etc. caused by pesticide application.

[0126] Calculation method of drug efficacy:

[0127]

[0128]

[0129] The results of field control efficacy are as follows:

[0130] Table 4 Results of field trials on efficacy of pesticides for controlling rice planthoppers

[0131]

[0132]

[0133] After applying the pesticides, the entire process was recorded and compared, and it was found that the rice grew well after spraying each compound preparation, the spraying drug dosage was within a safe range, did not affect the growth of the plants, and had an ideal control effect on rice planthoppers, ensuring the healthy growth of rice.

[0134] In summary, through indoor toxicity determination and field efficacy test, it can be seen that the pesticide composition of the present invention has a good control effect on rice planthoppers, is safe for target crops, has significant control effect, and is superior to a single agent in delaying the development of resistance and prolonging the lasting effect.

[0135] Although the application describes specific embodiments in detail by means of examples, the disclosure of the application may adopt various modifications and alternative forms. However, it should be understood that the disclosure of the application is not limited to the disclosed specific forms. On the contrary, the disclosure of the application covers all modifications, equivalents and alternative forms within the scope of the disclosure of the application, and the scope of the application is limited by the attached claims and their legal equivalents.

Claims

1. A pesticide composition containing an interionic compound, characterized in that: The active ingredients of the pesticide composition include active ingredient A and active ingredient B, wherein the active ingredient A is isoflualanam, and the active ingredient B is an interionic compound, wherein the interionic compound is any one of triflurofen, dicloromezotiaz or fenmezoditiaz, and the mass ratio of the active ingredient A to the active ingredient B is 1:40 to 40:

1.

2. The pesticide composition according to claim 1, characterized in that The active ingredient B is trifluphenazine, and the mass ratio of the active ingredient A to the active ingredient B is 1:30 to 40:1; The active ingredient B is dicloromezotiaz, and the mass ratio of the active ingredient A to the active ingredient B is 1:30 to 20:1; The active ingredient B is fenmezoditiaz, and the mass ratio of the active ingredient A to the active ingredient B is 1:40 to 25:

1.

3. The pesticide composition according to claim 2, characterized in that The active ingredient B is trifluphenazine, and the mass ratio of the active ingredient A to the active ingredient B is 1:16 to 35:1; The active ingredient B is dicloromezotiaz, and the mass ratio of the active ingredient A to the active ingredient B is 1:30 to 15:1; The active ingredient B is fenmezoditiaz, and the mass ratio of the active ingredient A to the active ingredient B is 1:30 to 18:

1.

4. The pesticide composition according to claim 3, characterized in that The active ingredient B is trifluphenazine, and the mass ratio of the active ingredient A to the active ingredient B is 1:8 to 25:1; The active ingredient B is dicloromezotiaz, and the mass ratio of the active ingredient A to the active ingredient B is 1:20 to 15:1; The active ingredient B is fenmezoditiaz, and the mass ratio of the active ingredient A to the active ingredient B is 1:18 to 18:

1.

5. The pesticide composition according to claim 1, characterized in that Based on the total weight of the pesticide composition being 100 wt %, the sum of the contents of the active ingredient A and the active ingredient B in the pesticide composition is 0.5 to 80 wt %.

6. The pesticide composition according to claim 1, characterized in that The pesticide composition includes adjuvants in addition to the active ingredients, and the adjuvants are selected from one or more of wetting agents, dispersants, emulsifiers, thickeners, disintegrants, antifreeze agents, defoamers, solvents, preservatives, stabilizers, synergists or carriers.

7. The pesticide composition according to claim 1, characterized in that The pesticide composition can be prepared into any dosage form acceptable in agriculture, and the dosage form is a solid preparation or a liquid preparation; Preferably, the dosage form is a liquid preparation or a suspension, and the solid preparation is a wettable powder or a water dispersible granule.

8. Use of the pesticide composition according to any one of claims 1 to 7 in controlling plant pests.

9. The use according to claim 7, characterized in that: The plant pests are Hemiptera pests.

10. The use according to claim 8, characterized in that: The hemiptera pest is rice planthopper.

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