218 results about "Cnaphalocrocis medinalis" patented technology

The invention belongs to the field of pesticide, which mainly relates to an ultralow-volume solvent containing pleocidin or spinetoram. The ultralow-volume solvent is an active component I or an active ingredient compounded by the active component I or an active component II, and the balance is solvent and accessory ingredient, wherein the active component I is pleocidin or spinetoram; and the active component II is insecticide of the other type of action mechanism. The ultralow volume solvent is simple to process and has the advantages of water conservation, high work efficiency, long efficacy continuing period, small possibility of generating resistance to drug for a target, small environment pollution, synergy and the like. Ultralow volume spraying, low-volume spraying or low-volume electrostatic spraying is applied to effectively prevent and control various pests, such as Cnaphalocrocis medinalis, Chilo suppressalis, rice planthopper, Ostrinia nubilalis, plutella xylostella, cabbage caterpillar, Spodoptera litura, Spodoptera exigua, aphids, Lesser green leaf hopper, Icerya purchase, aleyrodid, Thrip, stinkbug, acridid, flea beetle, leafminer, looper and the like.

The invention discloses a granular formulation for a paddy pesticide fertilizer and a preparation method thereof. Chlorantraniliprole is taken as the active ingredient of the granular formulation for the paddy pesticide fertilizer provided by the invention. The granular formulation for the paddy pesticide fertilizer comprises the following raw materials by weight part: 0.05%-10% of chlorantraniliprole, 30%-60% of carrier fertilizer, 0.1%-2% of slow releasing agent, 0.1%-10% of binding agent, 0.1%-0.5% of film-wrapping agent, and the balance of filler. The raw materials are uniformly mixed, pelletized according to a film-wrapping method, dried and sieved, thereby obtaining the granular formulation for the paddy pesticide fertilizer. When the granular formulation for the paddy pesticide fertilizer provided by the invention is once applied to the paddy production, the fertilization is performed, the destructive insects, such as, cnaphalocrocis medinalis, chilo suppressalis, tryporyza incertulas, sesamia inferens, and the like, are killed, and the operation of applying pesticide and fertilizer for two or more times by a user under the condition of the prior art is overcome.

The invention provides a method for preventing and controlling rice grubs by breeding soft-shelled turtle in a rice field, comprising the following steps of: (1) breeding strong rice seedlings, and transplanting the rice seedlings to large field; (2) digging deep ditches at the periphery and the middle part of the rice field; (3) setting habitats for the soft-shelled turtle at the middle part of the rice field and at the two sides of the rice field; (4) mounting escaping (stealing)-preventing facilities; (5) selecting young soft-shelled turtles; and (6) determining breeding time and density of soft-shelled turtle and disinfecting the young soft-shelled turtles, wherein Chinese soft-shelled turtle can be bred two days after rice is transplanted, and 30-50 Chinese soft-shelled turtles with the weight of 250-300g can be bred every 667 square meters. By adopting the method provided by the invention, quantity of spiders in the rice field can be improved, the quantity of rice plant hoppers can be reduced, ratio of the spiders to the rice plant hoppers is improved by 45.23%, damage of the rice plant hoppers is obviously reduced, control effect on cnaphalocrocis medinalis is 38.89%, and dead heart rate caused by damage of borers (chilo suppressalis and sesamia inferens) is reduced by 25% compared with that of the rice field in which the soft-shelled turtles are not bred.

The invention relates to an egg laying device of cnaphalocrocis medinalis guenee and a use method. The device comprises a 500-2000ml glass container, wherein the container is provided with a bottom and an opening; a grid-shaped plastic pad is arranged at the bottom of the container and is covered by filter paper; an absorbent cotton ball dipped with 10% of hydromel is hung in a beaker; the container contains water which does not immerse the plastic pad; and two layers of gauzes for sealing the opening of the container are arranged at the opening of the container. The device is simple in production, low in cost and easy to operate and has the advantages of prolonging the lives of cnaphalocrocis medinalis guenee adults, ensuring large egg number per female, improving the egg collecting efficiency, etc.

The invention discloses a formulation of an artificial feed for cnaphalocrocis medinalis guenee, a method for preparing the same and a method for breeding the cnaphalocrocis medinalis guenee, which belongs to the technical field of insect feed and breeding. The formulation of the feed comprises the following components in portion by weight: 2 to 4 portions of casein, 0 to 4 portions of yeast powder, 1.5 to 3 portions of glucose, 0.5 to 2 portions of cane sugar, 2 to 5 portions of wheat-germ powder, 0.01 to 0.02 portion of vitamin B complex, 0.2 to 0.4 portion of vitamin C, 0.01 to 0.02 portion of vitamin E, 1 to 4 portions of agar, 0 to 2 portions of cellulose, 2 to 4 portions of rice leaf dry powder (which is prepared from rice leaves of tillering stage by drying and crushing at a temperature of 60 DEG C), 0.2 to 0.4 portion of 4M potassium hydroxide, 0.1 to 0.2 portion of sorbic acid, 0 to 0.2 portion of nipalgin, and 90 to 120 portions of water. The feed is prepared simply with low cost, and is favorable for the cnaphalocrocis medinalis guenee which has normal growth and development, thereby overcoming the difficulty that the cnaphalocrocis medinalis guenee cannot be bred for a successive generation artificially, achieving the artificial scale breeding of insects, and providing a material and a method for scientific experiments, chemical medicament screening and the production of a viral pesticide.

A synergistic pesticide combination is characterized by comprising the active ingredients including flubendiamide (A) and abamectin or emamectin benzoate (B) in a weight ratio of 100:1-1:10, preferably 30:1-10:1. The total weight percent of the two active ingredients in the combination is 5-60%. The dosage form of the combination is preferably one or more of wettable powders, suspending agent, micro-emulsion, aqueous emulsion or water dispersible granules. The combination of the invention can be used for controlling cnaphalocrocis medinalis and spodoptera exigua in agriculture.

The invention discloses an insecticidal composition containing chromafenozide and amide. The insecticidal composition contains active component A and active component B. The active component A is selected from chromafenozide, the active component B is any compound selected from the following: flubendiamide, chlorantraniliprole and cyantraniliprole, and the active component A and the active component B are in a weight ratio of 1:70-70:1. The composition provided in the invention can control a plurality of pests, has an obvious synergistic effect, expands the insecticidal spectrum, and has high activity on plutella xylostella, beet armyworms, Pierisrapae Linne, tea tussock moth, Euproctis pseudoconspersa, peach fruit moths, Lithocolletis ringoniella, Olethreutidae, Archips fuscocupreana Walsingham, Pandermis heparana, cotton bollworms, Adoxophyes orana Fischervon Roslerstamm, Cnaphalocrocis medinalis Guenee, tryporyza incertulas, Chilo suppressalis and naranga aenescens moore. Also, the insecticidal composition can reduce the dosage of pesticides, reduce pesticide residue in crops, and alleviate environmental pollution.

The invention relates to a composite Fipronil and Ethofenprox insecticide comprising effective active constituents, auxiliary agent and solvent, wherein the effective active constituents include Fipronil and Ethofenprox by the weight ratio of 1-20 : 1-40. The insecticide can be used for controlling Chilo supperssalis, Laodelphax srtiatellus, Nilaparvata lugens, Sogatella furcifera and Cnaphalocrocis medinalis Guenee.

The invention relates to a spinetoram compounded insecticidal composition and belongs to the field of pesticide compounding. Active components of the spinetoram compounded insecticidal composition comprise spinetoram and chitin synthesis inhibitor compounds. A weight percentage of the spinetoram to the chitin synthesis inhibitor compounds is (1 to 90): (90 to 1), and preferably, the weight percentage is (1 to 45): (60 to 3). The spinetoram compounded insecticidal composition comprises 1 to 90% by mass of the active components, and preferably, comprises 3 to 7% by mass of the active components and the balance auxiliary ingredients which can be used in pesticides and are acceptable. The spinetoram compounded insecticidal composition can be processed into emulsion in water, microemulsion, missible oil, a suspending agent, wettable powder and water dispersible granules by known methods. The spinetoram compounded insecticidal composition has the advantage that through the active components of spinetoram and the chitin synthesis inhibitor compounds, control of lepidopterous, thysanopterous and homopterous pests such as cnaphalocrocis medinalis guenee, diamondback moth, prodenia litura, cotton bollworm, beet armyworm and thrip is realized.

The invention relates to a pesticide composition in the field of pesticide combination, wherein the effective ingredients thereof are spinetoram and one of three pyrethroid compounds, the ratio of the two effective ingredients by weight percent is 1 to 80:40 to 0.1, and preferably 3 to 45: 20 to 0.1; the total mass percent of the effective ingredients in the pesticide composition is 1% to 90%, preferably 3% to 50%, the balance is assistant ingredients allowable and acceptable in pesticide preparation, and aqueous emulsion, particle, micro-emulsion, emulsifiable concentrate, suspension, soluble liquid, wettable powder, microcapsule suspension or water dispersible granule can be prepared using known methods; the pesticide combination of the invention can be used for preventing and controlling homopteran and thysanoptera pests such as cnaphalocrocis medinalis guenee, diamondback moth, prodenia litura, cotton bollworm or beet armyworm, thrip, etc.

The invention relates to a rynacypyr and dursban insecticidal composition, belonging to an insecticidal composition with enhancement effect. The rynacypyr and dursban insecticidal composition is a mixture of a compound (A) and a compound (B), and can effectively prevent and treat rice stem borers, tryporyza incertulas, cnaphalocrocis medinalis guenees, rice planthopper and injurious insects on various plants, such as wheat, cotton, soybeans, fruit trees, tea trees, vegetables and the like. The invention has higher prevention effect than singly using the compound (A) or the compound (B).

The invention belongs to the field of pesticide compositions, and in particular relates to an oil-suspending agent disinfestation composition which takes spinosyns and emamectin benzoate as effective components. The oil-suspending agent disinfestations composition is mainly applied to prevention and treatment of damages caused by insects including rice cnaphalocrocis medinalis, vegetable plutella xylostella, beet armyworm and the like. The oil-suspending agent disinfestations composition is characterized in that: (1) the composition comprises effective components of the spinosyns and the emamectin benzoate, and the rest components are acceptable auxiliary components which are allowed to be used in the pesticide; and (2) the mass proportion of the spinosyns to the emamectin benzoate is 1:50-50:1, preferably 1:4-4:1; and the effective components account for 1-50 percent, preferentially 2.5-35 percent, by weight percentage in the preparation. The oil-suspending agent disinfestations composition has the advantages that the drug characteristics are complementary to each other in advantages, and one drug can prevent and treat various kinds of crop insect damages so as to be convenient for farmers to apply the drug; the drug resistance of destructive insects are retarded, which is of significance to the resistance and the comprehensive treatment to destructive insects; and the composition has the advantages of synergy, favorable permeability, strong adhesivity, evaporation resistance, storage resistance and the like, reduces the dosage and improves the disinfestation effect.

The invention provides a Cry2Aa# gene which is a codon optimized Cry2Aa gene. The Cry2Aa# gene has a sequence as shown in an SEQ ID No:1 and can be used for coding polypeptides having the lethal activity for insects such as Lepidoptera. In addition, the invention also provides a recombinant vector and a crop resistance changing method. The recombinant vector is characterized in that the Cry2Aa# gene is inserted in the recombinant vector which can enable the inserted Cry2Aa# gene to be expressed. The crop resistance changing method is characterized in that the recombinant vector is transformed so as to enter into crops, so that the gene inserted in the recombinant vector is expressed in the crops. Through the technical scheme, the expression quantity of insecticidal proteins is obviously increased, and the high resistance on rice pests such as cnaphalocrocis medinalis can be provided for rice.

The invention discloses a blending preparation of a chemical pesticide and a biological pesticide and an application thereof. In the blending preparation, the chemical pesticide is dimehypo, and the biological pesticide is one or more of Azadirachtin missible oil, rotenone missible oil, bacillus thuringiensis and Jinggangmycin. The blending preparation of the invention can obviously reduce the dosage of the chemical pesticide, increases the pesticide effect of the pesticides, reduces pesticide residues, lightens environment pollution and can enhance the resistance of rice so as to reach the purposes for increasing the yield of the rice and improving the quality of the rice, and the blending preparation can be mainly used for preventing and treating Cnaphalocrocis medinalis, Chilo suppressalis, tryporyza incertulas or banded sclerotial blight of the rice.

The invention discloses an insecticidal composition containing sulfoxaflor and carbamates. The insecticidal composition comprises an active ingredient A and an active ingredient B, wherein the active ingredient A is the sulfoxaflor; the active ingredient B is any of the following insecticides: carbaryl, indoxacarb, metolcarb, fenobucarb, and isoprocarb; and the weight ratio of the active ingredient A to the active ingredient B is 1-50 percent:1-80 percent. The composition can control various insect pests, has a remarkable synergistic effect, widens a bactericidal spectrum, and has relatively high activity on cotton bollworms, aphids, rice planthoppers, rice leafhoppers, and Cnaphalocrocis medinalis as well as Plutella xylostella, cabbage caterpillars and beet armyworms on cruciferous vegetables; the using amount of pesticides is reduced, the residual amount of the pesticides on crops is reduced, and the environmental pollution is reduced; and the insecticidal composition is safe to people and livestock, has high environmental compatibility, and ensures that pests cannot produce the pesticide resistance easily.

The invention discloses a pesticide composition and application thereof in agriculture. The effective components of the composition contain methoxyfenozide and organophosphorus pesticide, and the massratio of methoxyfenozide and organophosphorus pesticide is 100:1 to 1:100. The pesticide composition has the advantages of synergism, quick action and long effect, can reduce the use amount and savelabor, and is also good for delaying the development of resistance. The pesticide composition can be used for preventing and treating pests in plants, and is particularly suitable for preventing and treating lepidoptera pests such as spodoptera exigua, prodenia litura, cnaphalocrocis medinalis guenee, chilo suppressalis and cotton bollworm.

The invention provides a method for continuously propagating a large amount of Cnaphalocrocis medinalis in field, which comprises the following steps: (1) building a nylon net room which is 40 meters long and 8 meters wide in a field, dividing the nylon net room into four parts transversely, and continuously sowing seeds or transplanting rice seedlings in the independent divided parts every 25 to 30 days; (2) performing normal field management; (3) inoculating adults of Cnaphalocrocis medinalis into the first isolated part in a high tillering period of rice, and finally allowing 10 to 20 percent of senile larvae or pupae to propagate in the first part; and (4), in the peak emergence period of adults, opening a second isolated nylon net adjacent to the first isolated part for keeping the Cnaphalocrocis medinalis population in the net room going. Thus, larvae of the same age used for doing experiments can be bred continuously and in large amount and supplied continuously.

The invention discloses a method for improving the resistance of rice plants to rice case worms by applying the transgenic technology, and belongs to the technical field of the plant gene engineering breeding. The method comprises the following steps: Rubisco specific promoters RubS and insect-resistant genes Cry1A(b) are constructed to a pPZP201 expression plasmid carrier; the Cry1A(b) genes are integrated into a rice genome by using the method of co-transformation mediated by agrobacterium tumefaciens; the homomycin resistance genes in the self-bred progenies are rejected. The Cry1A(b) insect-resistant genes in the transgenic rice present specific high-expression, present low-expression in seeds, and have no expression in roots, thus obviously improving the resistance of the rice plants to the rice case worms, greatly reducing the pesticide application amount, reducing the production cost and improving the plant profit; simultaneously, the expression of the insect-resistant protein in rice seeds, pollen and roots is decreased, and the worry of people to the rice security is reduced.

The invention discloses a pesticide in particular for the prevention and cure of rice borer, including Chilo Suppressaeis Walker, Tryporyza incertulas, Sesamia inferens, Cnaphalocrocis medinalis Guenee and cotton bollworm, Red Spiders, Linnaeus, its active ingredients include Indoxacarb and acetamiprid, it has stable medicinal effect and and good wide spectrum property.

The invention discloses a pesticide composition containing nitenpyram, which comprises two active ingredients: A is the nitenpyram, and B is one selected from chlorpyrifos-methyl, chlorantraniliproleand metaflumizone; and based on the parts by weight of the two active ingredients, the proportion between the components A and B is 1:20-20:1. The pesticide composition can be prepared into missible oil, wetting powder, emulsion in water, microemulsion, suspending agent and water dispersible granules, wherein the weight percentage content of the active ingredients is 5-85%. The pesticide composition has the function(s) of synergy and / or expansion of prevention and treatment spectrum, and can be used for controlling pests such as rice planthopper of rice, cnaphalocrocis medinalis guenee, chilosuppressalis, tryporyza incertulas, rice skipper butterfly and the like as well as aphid, white fly, thrips palmi karny, flea beetle, prodenia litura, spodoptera exigua and the like of commercial crops such as cotton, vegetables and the like.

The invention discloses an insecticidal composition containing metaflumizone, which comprises effective constituents of a component A and a component B, wherein the component A is the metaflumizone, and the component B is any one of chlorphrifos, phoxim, triazophos, profenofos, diazinon, cidial and pyridaphethione; the component A and the component B have the weight ratio of 80:1-1:80; and the accumulated weight percent of the effective constituents is 1-80 percent. The insecticidal composition has the advantages of synergistic effect and obviously improved pest control effect and can reduce drug amount and delay the development of the drug resistance of pests. The insecticidal composition can control the pests on crops and particularly be applied to control cnaphalocrocis medinalis, riceborer, cotton bollworms, spodoptera litura and spodoptera exigua.

The invention provides an efficient pest trapping device which comprises a sex pheromone mounting structure and a bottom ponding container. The trapping device is provided with a bracket; the bracket comprises an upper mounting ring and a lower mounting ring which are coaxial; the sex pheromone mounting structure is placed in a region defined by the upper mounting ring and lower mounting ring, and is provided with a ceiling; the ceiling is mounted on the bracket; the trapping device is also provided with 3-10 stop wing plates which are mounted on the upper mounting ring and lower mounting ring and uniformly distributed in a radial manner; and the vertical projections of the mounting rings and the stop wing plates are positioned in the bottom ponding container. The efficient pest trapping device provided by the invention is convenient to use, improves the trapping efficiency of the trapper by trapping pests based on a method combining a stop structure and a sex attraction structure, can be used for trapping and killing pests such as rice chilo suppressalis, Cnaphalocrocis medinalis, vegetable Spodoptera litura, beet armyworm, plutella xylostella, Bactrocera dorsalis and the like and for monitoring the major pests of rice, vegetables and fruit trees, and has the advantages of wide application range and good effect.

The invention belongs to the technical field of compound pesticides, and particularly relates to a compound pesticide of chlorantraniliprole and chlorpyrifos. The compound pesticide is compounded reasonably according to respective characteristics of the chlorantraniliprole and the chlorpyrifos, a combination ratio with obvious synergic action is screened out through a series of indoor biological tests and field experiments, and the compound pesticide comprises the following components in percentage by weight: 0.5 to 2.5 percent of the chlorantraniliprole, and 32.5 to 35 percent of the chlorpyrifos. The compound pesticide of the chlorantraniliprole and the chlorpyrifos has the optimal cooperative and synergistic action, has the co-toxicity coefficient to chilo suppressalis of 310.4 to 518.0, has the advantages of wide insecticidal spectrum, quick response and good lasting effect, greatly reduces the production and using costs of the pesticide, reduces the cost per acre by about 30 to 40 percent compared with that of the single use of the chlorantraniliprole, has good effects of controlling rice insect pests such as the chilo suppressalis, brown planthoppers, cnaphalocrocis medinalis and the like, and has no untoward effect on the growth development of rice.

The invention relates to a pesticide composition containing emamectin benzoate and a nereistoxin insecticide, wherein a weight ratio of the emamectin benzoate to the nereistoxin insecticide is 1:0.05-20, and the nereistoxin insecticide is selected from Cartap. The pesticide composition has characteristics of stable insect disinfestation property and significant complementary synergy, and provides a synergy effect for target pests. Particularly the emamectin benzoate and Cartap compounded composition can provide a synergy effect during cnaphalocrocis medinalis guene prevention and control, wherein the pesticide amount can be reduced, and pesticide resistance of pests due to one of the pesticides can be eliminated. In addition, the compounded composition containing the emamectin benzoate and the Cartap is prepared into a preparation, especially wettable powder, such that good prevention effect and good yield effect can be achieved.

The invention relates to a pesticidal composition in the field of pesticide compounding, and discloses a binary mixed pesticidal composition containing active ingredients of a novel quinazoline pyrifluquinazon and indoxacarb. The weight percentage ratio of the novel quinazoline pyrifluquinazon to the indoxacarb is (1-90):(90-1), and (3-50):(60-5) preferably; the sum of the active ingredients is 1 to 90 mass percent of the pesticidal composition, and 5 to 60 percent preferably, and the balance is acceptable auxiliary elements allowed to be used in pesticides; and the pesticidal composition can be prepared into emulsion in water, microemulsion, an emulsifiable solution, a suspending agent, wettable powder and water dispersible granules. The pesticidal composition is mainly used for controlling injurious insects such as cnaphalocrocis medinalis, plutella xylostella, prodenia litura, cotton bollworm, beet armyworm and the like.

The invention relates to a method for breeding a rice sterile line with resistance to Chilo suppressalis, Scirpophaga incertulas and Cnaphalocrocis medinalis. The method comprises the following steps: C22-113 containing insect-resistant genes with resistance to Chilo suppressalis, Scirpophaga incertulas and Cnaphalocrocis medinalis and containing three-line sterile genes is taken as a parent and hybridizes with a three-line maintainer line I with excellent agronomic characters and good flowering habits; a hybrid is taken as a breeding material and subjected to multi-generation self-cross selective breeding with resistance to Chilo suppressalis, Scirpophaga incertulas and Cnaphalocrocis medinalis as the standard under the condition of high incidence of stem borers, and a strain II with resistance to Chilo suppressalis, Scirpophaga incertulas and Cnaphalocrocis medinalis is obtained; a three-line sterile line III as a female parent hybridizes with the strain II as a male parent, a sterile plant in the hybrids is subjected to continuous backcross with the male parent strain II as a recurrent parent, the rice sterile line A with resistance to Chilo suppressalis, Scirpophaga incertulas and Cnaphalocrocis medinalis is bred, and the corresponding recurrent parent is the corresponding maintainer line B. The method has no safety dispute, improves a field natural insect luring identification method and improves the accuracy of identification results.

The invention discloses an insecticide combination containing indoxacarb and belongs to the technical field of chemical prevention of pests. An active ingredient A of the insecticide combination is indoxacarb, an active ingredient B of the insecticide combination is silafluofen, and the weight ratio between the ingredient A and the ingredient B is (1:20)-(20:1). Besides the active ingredients, the insecticide combination further comprises an additive and fillers, the active ingredient A and B account for 15%-50% of the total weight of the insecticide, the additive accounts for 20%-30% of the total weight of the insecticide, and the balance is the fillers. The insecticide combination can be made into wettable powder, a suspending agent and the like. The insecticide combination has good control effect on rice plant hopper, aphid, vegetable bemisia tabaci, cnaphalocrocis medinalis and stem borer and the like. Compared with a conventional control insecticide, the insecticide combination can be reduced in dosage, reduces environmental pollution and agricultural product residues, can delay insecticide resistance of a single insecticide, has the advantage of being long in lasting time, and can reduce cost in comparison with the single insecticide.

The invention discloses an agricultural insecticidal composition containing active ingredients, namely indoxacarb and 3-chloro-N1-(2-methyl-4-heptafluoroisopropyl phenyl)-N2-(1-methyl-1-cyanoethyl)phthalimide which are in the weight ratio of (1-50): (20-1). The insecticidal composition disclosed by the invention is suitable for preventing and treating destructive insects, such as spodoptera litura, beet armyworm, diamondback moth, cnaphalocrocis medinalis and cotton bollworm, of crops. According to the agricultural insecticidal composition, the quick acting performance and effect lasting performance are better than those of single agents, and the dosage and medicating cost of insecticide are reduced, so that the environmental protection and comprehensive treatment on agricultural insects are facilitated.

The invention relates to a water emulsion used for controlling cnaphalocrocis medinalis, and pertains to the technical field of pesticides. The water emulsion is composed of the following components by weight percentage: 10 to 40 percent of chlorpyrifos, 0.2 to 5 percent of emamectin benzoate, 5 to 15 percent of emulsity agent, 1 to 10 percent of antifreezing agent, 10 to 30 percent of solvent and water for the rest supplement. Compared with the existing agents for controlling cnaphalocrocis medinalis, the water emulsion has the following advantages that: 1. as alkylbenzene sulfonate metal salt is taken as the emulsity agent, the decomposition of the emamectin benzoate in the water can be retarded and the pesticide application effect is improved; 2. the water emulsion has obvious synergy to the rice fulgorid; 3. the water emulsion can replace riskiest pesticides (acephatemet and the like), reduce the dosage and the usage amount of the organic solvent, and reduce the environment pollution and the farm product remain; 4. the water emulsion can retard the drug resistance of the cnaphalocrocis medinalis and improve the desinsection speed.