阅读说明：本技术 一种含四唑虫酰胺的杀虫剂组合物 (insecticide composition containing tebuconazole amide ) 是由 陈超 操海群 廖敏 蒋兴川 高全 任学祥 于 2018-07-18 设计创作，主要内容包括：本发明专利为一种含四唑虫酰胺、联苯菊酯或溴氰菊酯的杀虫剂组合物,属于化学防治领域,由有效成分四唑虫酰胺、联苯菊酯或溴氰菊酯及其助剂组成,对防治鳞翅目害虫尤其是稻纵卷叶螟有很好的增效作用。所述的杀虫剂组合物室内生测对稻纵卷叶螟的增效比为20:1~1:20。本发明专利具有增效作用显著,防效好,用药量低,对环境及靶标生物安全,一药多治等特点,本组合物可以兼治其他同翅目害虫(如稻飞虱、烟粉虱等),对减缓稻纵卷叶螟对药剂的抗药性有很好的作用。(The invention discloses insecticide compositions containing tebuconazole, bifenthrin or deltamethrin, which belong to the field of chemical prevention and control, comprise effective components of tebuconazole, bifenthrin or deltamethrin and auxiliary agents thereof, and have good synergistic effect on preventing and controlling lepidoptera pests, particularly rice leaf rollers, wherein the synergistic ratio of indoor bioassay of the insecticide compositions to the rice leaf rollers is 20: 1-1: 20.)

1, pesticide compositions containing tebuconazole amide are characterized by comprising effective components A and B and auxiliary components, wherein A is tebuconazole amide, B is bifenthrin or deltamethrin, and the total weight percentage of the effective components is 1% -90%.

2. The pesticidal composition of claim 1, wherein: the mass ratio of A to B in the pesticide composition is 20: 1-1: 20.

3. The pesticidal composition of claim 1, wherein: the mass ratio of A to B in the pesticide composition is 5: 1-1: 5.

4. The pesticidal composition of claim 1, wherein: the pesticide composition is in the dosage forms of missible oil, suspending agent, water dispersible granule, wettable powder, aqueous emulsion and microcapsule suspending agent.

Technical Field

The invention belongs to the field of chemical prevention and control of pests, and particularly relates to compound insecticides for preventing and controlling lepidoptera pests, in particular to rice leaf rollers.

Background

The rice leaf rollers (Cnaphalocrocis medinalis Guenee) are called as the leaf rollers, white leaf worms, bracteoles and the like, which is the main pests in China rice production areas are widely distributed in each rice area, besides damaging rice, crops such as barley, wheat, sugarcane, millet and the like, barnyard grass, Leersia hexandra, ditch millet, paspalum, double-ear paspalum, digitaria sanguinea, green bristlegrass, thatch, reed and the like can be eaten by larvae, the leaves are studded into longitudinal bractes, the upper epidermis and leaf pulp are eaten in the longitudinal bractes, only white lower epidermis is left, the normal growth and even withering of the rice are influenced in the seedling stage, the tillering stage is damaged to the jointing stage, the tillering is reduced, the plants are shortened, the growth stage is delayed, particularly, the damage of sword leaves in the heading stage after booting is finished, the empty hull rate is improved, the thousand seed weight is reduced, and the rice leaf rollers can be damaged and prevented and flowery in China if the rice production stage is not reasonably and effectively controlled.

The tebuconazole amide is kinds of novel efficient pesticide, has the characteristics of super high efficiency, low toxicity, low residue and no public hazard, and has extremely high activity on lepidoptera larvae and other pests.

Bifenthrin is kinds of high-efficiency synthetic pyrethrin insecticide acaricide, has good contact poisoning and stomach poisoning effects, does not move in soil, is relatively safe to environment, and has long residual effect period.

Deltamethrin is with the highest toxicity in pyrethroid insecticides, has the effects of contact killing and stomach toxicity, quick contact killing and strong knockdown force.

So far, no report on the control of cnaphalocrocis medinalis by using the pesticide composition of tebuconazole, bifenthrin and deltamethrin is found.

Disclosure of Invention

The invention aims to provide pesticide compositions for preventing and treating cnaphalocrocis medinalis, which are prepared into pesticide by mixing teflufen and bifenthrin or deltamethrin, are used for preventing and treating the cnaphalocrocis medinalis, have good effect and low dosage, and can well delay the resistance of the cnaphalocrocis medinalis to medicaments.

The technical scheme adopted by the invention is as follows:

insecticide composition containing tebuconazole amide is characterized by consisting of active ingredients A and B and auxiliary material components, wherein A is tebuconazole amide, B is bifenthrin or deltamethrin, and the total weight percentage of the active ingredients is 1% -90%.

The pesticidal composition of claim 1, wherein: the mass ratio of A to B in the pesticide composition is 20: 1-1: 20.

The pesticidal composition of claim 1, wherein: the mass ratio of A to B in the pesticide composition is 10: 1-1: 5.

The pesticidal composition of claim 1, wherein: the pesticide composition is in the dosage forms of missible oil, suspending agent, water dispersible granule, wettable powder, aqueous emulsion and microcapsule suspending agent.

When the invention is missible oil, the weight percentage of each component is as follows:

tetrazolium amide: 1 to 45 percent

Bifenthrin/deltamethrin: 1-10%

Solvent: 3 to 30 percent

Emulsifier: 5 to 15 percent of

The pesticide composition missible oil comprises the following specific processing steps: according to the formula, the tebuconazole and the bifenthrin/deltamethrin are dissolved by a solvent, the emulsifier is added, and the mixture is uniformly stirred in a stirring kettle to prepare the missible oil preparation of the composition.

When the wettable powder is wettable powder, the components have the following weight percentage content:

bifenthrin/deltamethrin 1-70%

1 to 10 percent of tebuconazole

3 to 10 percent of dispersant

1 to 8 percent of wetting agent

The filling is filled to 100 percent

The wettable powder of the pesticide composition comprises the following specific processing steps: the bifenthrin/deltamethrin and the teflufen are mixed with the dispersant, the wetting agent and the filler according to the formula, evenly stirred in a stirring kettle and evenly mixed after passing through an air flow pulverizer, and the wettable powder of the composition can be prepared.

When the water dispersible granule is a water dispersible granule, the weight percentage of each component is as follows:

bifenthrin/deltamethrin 1-55%

1 to 10 percent of tebuconazole

2 to 8 percent of dispersant

2 to 8 percent of wetting agent

2 to 4 percent of disintegrating agent

The filling is filled to 100 percent

The water dispersible granule of the pesticide composition comprises the following specific processing steps: uniformly mixing bifenthrin/deltamethrin, teflufen, a dispersing agent, a wetting agent, a disintegrating agent and a filler according to the formula, crushing by using an ultramicro jet mill, kneading, adding into a fluidized bed granulation dryer for granulation, drying, screening, and then sampling and analyzing to prepare the water dispersible granule of the pesticide composition.

When the suspending agent is a suspending agent, the components have the following weight percentage:

bifenthrin/deltamethrin 1-40%

1 to 40 percent of tebuconazole

3 to 6 percent of dispersant

1 to 4 percent of wetting agent

0.5 to 4 percent of antifreezing agent

0.1 to 3 percent of thickening agent

0.1 to 1 percent of defoaming agent

The water is supplemented to 100 percent

The processing steps of the suspending agent of the pesticide composition are as follows: the auxiliary agents are mixed, uniformly mixed through high-speed shearing, added with the original bifenthrin/deltamethrin and tebuconazole, and ground in a sand mill for 3-4 hours to ensure that the particle size of particles is below 5 mu m, so that the pesticide composition suspending agent is prepared.

When the invention is an aqueous emulsion, the weight percentage of each component is as follows:

bifenthrin/deltamethrin 1-55%

1 to 10 percent of tebuconazole

2 to 6 percent of emulsifier

3 to 5 percent of solvent

1 to 3 percent of antifreeze agent

0.1 to 5 percent of thickening agent

0.1 to 1 percent of defoaming agent

The water is supplemented to 100 percent

The processing steps of the pesticide composition aqueous emulsion are that the bifenthrin/deltamethrin and the teflufen, the solvent and the emulsifier are added in to be dissolved into even oil phase, the water, the antifreeze and the like are mixed in to be even water phase, the water phase is added into the oil phase at the same time under high speed stirring, and the oil-in-water type aqueous emulsion is formed after high speed shearing for 5 to 10min, thus obtaining the pesticide composition aqueous emulsion.

When the microcapsule suspension agent is used, the weight percentage of the components is as follows:

bifenthrin/deltamethrin 1-40%

1 to 10 percent of tebuconazole

Capsule shell material 0.5-4%

1 to 3 percent of solvent

1 to 4 percent of dispersant

2 to 4 percent of emulsifier

1 to 2 percent of thickening agent

0 to 2 percent of pH regulator

The water is supplemented to 100 percent

(1) Dissolving bifenthrin/deltamethrin and tebuconazole in a solvent, adding a capsule shell material, and uniformly stirring to obtain an oil phase; (2) adding an emulsifier and an auxiliary agent into water, and uniformly stirring to obtain a water phase; (3) adding the water phase into the oil phase, and homogenizing at high speed to form an oil-in-water emulsion; (4) under the condition of 450 r/min rotation speed, adding polyamine to take part in interfacial polymerization reaction, raising the reaction temperature to 25-70 ℃, keeping for 2-24 hours, and curing to form capsules; (5) adding dispersant and thickener, and stirring to obtain microcapsule suspension.

The emulsifier is or more of alkyl benzene naphthalene sulfonate, alkylphenol polyoxyethylene phosphate, diphenyl phenol polyoxyethylene polyoxypropylene ether, styrene phenol polyoxyethylene ether, alkylphenol polyoxyethylene formaldehyde condensate, diphenyl phenol polyoxyethylene polyformaldehyde condensate, castor oil ethylene oxide adduct, NNO, NP, agricultural emulsion 500, agricultural emulsion 600, Tween-80 and polyvinyl alcohol.

The dispersing agent is or more of lignosulfonate, fatty amide N-methyl taurinate sodium salt, alkylphenol polyoxyethylene ether sulfate, polyoxyethylene polyoxypropylene block copolymer, alkylphenol polyoxyethylene and fatty alcohol polyoxyethylene ether.

The wetting agent is selected from or more of sodium dodecyl sulfate, calcium dodecyl benzene sulfonate, nekal BX, sodium alkyl benzene sulfonate, polyoxyethylene triphenyl ethylene phenyl phosphate and Chinese honeylocust powder.

The disintegrating agent is or more selected from bentonite, urea, ammonium sulfate, aluminum chloride, citric acid, succinic acid and sodium bicarbonate.

The filler is selected from or more of kaolin, diatomite, bentonite, attapulgite, white carbon black, starch and light calcium carbonate.

The thickening agent is or more of magnesium aluminum silicate, xanthan gum, hydroxymethyl cellulose, gum arabic and polyvinylpyrrolidone.

The antifreezing agent is or more selected from ethylene glycol, propylene glycol, glycerol and polyethylene glycol.

The defoaming agent is selected from or more of silicone oil, silicone compounds, C10-20 saturated fatty acid compounds, C8-10 fatty alcohol compounds and polyoxyethylene glycerol ether.

The capsule shell material is or more of tolyl isocyanate, polymethylene poly-toluene isocyanate, diphenylmethane diisocyanate and urea-formaldehyde resin.

The solvent is or more of toluene, xylene, ethanol, N-dimethylformamide, chloroform, cyclohexanone, cyclohexane and acetone.

The pH regulator of the invention mainly comprises of hydrochloric acid, glacial acetic acid, citric acid, sodium hydroxide, ammonia water, ethylenediamine, triethanolamine and triethylamine.

Compared with the prior art, the pesticide composition of the invention has the following beneficial effects: (1) compared with a single agent, the composition has obvious synergy on rice leaf rollers, obviously improves the control effect and obviously reduces the medication cost; (2) can slow down the drug resistance of the rice leaf roller to the medicament and prolong the service life of the medicament; (3) the composition has quick-acting and long-acting functions on the rice leaf rollers; (4) the field dosage can be greatly reduced, and the environmental pollution and pesticide residue are effectively reduced; (5) reducing toxicity to other non-target organisms.

Experimental data

test reagents including teflufen, bifenthrin, deltamethrin

II, testing pests: rice leaf roller (3 years)

Thirdly, a determination method:

a method combining indoor toxicity measurement and field test is adopted.

The co-toxicity coefficient of the compound agent with different proportions to rice leaf roller is obtained by indoor toxicity measurement, the prevention and treatment effect is determined by field efficacy tests, and the formula proportion and the optimal dosage of the compound agent are determined.

And (3) measuring indoor toxicity, namely, adopting an insect immersion method, calculating the dosage of a raw medicine according to effective components, preparing a mother solution, adding clear water to dilute the mother solution to 5-7 gradient concentrations, treating the mother solution as a control by using the clear water, repeating the treatment for 3 times, selecting 20 larvae with the growth state of basically , putting the larvae into an experimental barrel containing liquid medicine, covering a gauze (preventing and escaping), placing the larvae into a constant temperature box at 25 ℃, investigating the death situation after 24 hours, recording the number of dead insects, and processing data by using DPS statistical software.

The field effect is as follows: the formula with synergistic effect obtained by indoor bioassay is prepared into missible oil (EC), a suspending agent (SE), Wettable Powder (WP), a Water Dispersible Granule (WDG), an emulsion in water (EW) and a microcapsule suspending agent (CS) for testing. After the cell spraying agent is set, the control effect is checked and the appropriate dosage of the agent is determined.

The results of toxicity measurement of 3 medicaments and mixed medicaments on rice leaf roller are shown in tables 1 and 2;

as can be seen from tables 1 and 2, the tebuconazole, the bifenthrin and the deltamethrin show good indoor toxicity effect on the rice leaf rollers, and LC₅₀The pesticide composition is 0.117mg/L, 3.336 mg/L and 2.034 mg/L respectively, the co-toxicity coefficient of the bifenthrin and the tebuconazole is more than 120 in the range of 20: 1-1: 20, and the good synergistic effect is shown; the co-toxicity coefficient of the deltamethrin and the tebuconazole is more than 120 for the rice leaf roller within the range of 20: 1-1: 20, and the good synergistic effect is shown.

TABLE 1 toxicity of bifenthrin and tebuconazole in different proportions to cnaphalocrocis medinalis (3 years old)

TABLE 2 toxicity of deltamethrin and tebuconazole mixed in different proportions to cnaphalocrocis medinalis (age 3)

Detailed Description

The invention is explained in detail by the following embodiments, bifenthrin/deltamethrin and teflufen are processed into dosage forms according to the proportion of 20: 1-1: 20, and the percentage in the embodiments is weight percentage; the invention is not so limited.