39results about How to "Improve contact ability" patented technology

The invention discloses a pesticide spraying device which comprises a pesticide mixing tank, a main water pipe and a spraying device. Pesticide liquid is contained in the pesticide mixing tank, one end of the main water pipe is communicated to the pesticide mixing tank, and the other end of the main water pipe is connected with the spraying device through a branch water pipe and a small water pipe; the spraying device comprises a hollow supporting rod and a sliding block, the closed end of the supporting rod is provided with a plurality of spraying rods arranged to be of an umbrella-stand-shaped structure, one end of each spraying rod is connected to the closed end of the supporting rod through a soft pipe, the other end of each spraying rod is further provided with a plurality of spraying nozzles, the sliding block is arranged on the supporting rod in a sliding and sleeved mode, the middle of each spraying rod is further connected to the sliding block through a spoke, a groove is formed in the side, facing the supporting rod, of the sliding block, the supporting rod is provided with an outwards-protruding first elastic sheet and a second elastic sheet connected with the root of the first elastic sheet, and sliding of the sliding block can be accordingly limited. The pesticide spraying device can be used for spraying pesticide in a large-area crop planting area, is durable, saves labor, improves efficiency and is safe in operation.

The invention discloses an aphid removal agent for organic vegetables and a using method of the aphid removal agent. The removal agent is processed by thunder god vines and roots, stems of red-knees herb, human urine and tea-oil tree cakes which are combined, wherein the aphid removal agent is a combined mixture with the mass ratio of thunder god vines and roots, stems of red-knees herb, human urine and tea-oil tree cakes being (3.0-4.0): (1.0-2.0): (6.0-8.0): (0.5-1.0), preferably 3.5: 1.5: 7.5: 0.75; the thunder god vines and roots and stems of red-knees herb are calculated based on fresh weight, the tea-oil cakes are calculated based on weight of dry cakes which are not mildewed and absorbs moisture for 1-30 days, and the human urine is calculated based on the weight of pure urine which is not doped with excrements and the like and stored for 1-30 days; the human urine is a processing medium, the oil-tea cakes are auxiliary agents, and the combined processing liquid is a raw liquid. The combined agent is remarkable in preventing and treating effect on aphids of organic vegetables and has a synergistic effect. When the aphid removal agent is used for preventing and treating insect pests, the aphid removal agent is sprayed with 10 times of a liquid based on 5-15kg of the raw liquid per 667m<2>, so that the aphids can be quickly killed to inhibit spread of the aphids. The aphid removal agent further can be used for supplementing nutrients such as nitrogen so as to accelerate recovery of pest strains. The aphid removal agent in production is convenient to use, simple to operate, low in cost and remarkable in preventing and treating effect.

The invention relates to the technical field of pesticides, and discloses a pesticide for preventing and controlling litchi whiteflies and a preparation method thereof. The pesticide is prepared from, by weight, 12-32 parts of sisyrinchium rosulatum volatile oil, 9-19 parts of cypermethrin, 9-15 parts of a rosemary extract, 11-23 parts of bergamot oil, 6-17 parts of herba portulacae, 4-15 parts of green Chinese onions, 4-12 parts of neem tree flowers, 30-45 parts of vegetable oil, 8-15 parts of cosolvent and 6-14 parts of a surfactant. According to the pesticide, the litchi whiteflies can be effectively prevented and controlled, and the litchi yield can be effectively increased; meanwhile, the pesticide liquid residue period of the pesticide is only 8-11 days, and therefore the pesticide is safe to people and livestock. The invention further provides the preparation method of the pesticide for preventing and controlling the litchi whiteflies. The pesticide for preventing and controlling the litchi whiteflies is reasonable in compatibility, high in litchi whitefly prevention effect, short in killing time, green and nuisanceless, greatly decreases the pest cardinal numbers and has a great advantage on litchi whitefly prevention and control.

The invention relates to a composition for controlling a diamondback moth of a brassicaceous vegetable and a preparation and application thereof. The composition contains two active components of chlorfenapyr(4-brombutyl-2-(4-chlorphenyl)-1-(ethoxymethyl)-5-(trichloromethyl)pyrrole-3-nitrile) and pyriproxyfen(4-phenoxylphenyl(RS)-2-(2-pyridyloxy)propyl ether), and the weight ratio of chlorfenapyr and pyriproxyfen is between 1:4 and 4:1. The composition preparation can be prepared from the composition with effective dosage, solid or liquid carriers, an auxiliary agent and other additives by a conventional method and used for processing the diamondback moth or a habitat thereof of the brassicaceous vegetable. The composition overcomes the defects of the prior art, expresses obvious synergy, can show optimal contact killing performance, stomach poisoning performance and ovicidal effect by processing the diamondback moth of the brassicaceous vegetable through applying smaller dosage, has long effect duration and simultaneously strengthens the rapid killing activity on the diamondback moth.

The invention discloses a vegetable insecticide and a preparing method thereof. The vegetable insecticide is prepared from, by weight, 1-2 parts of hairyvein agrimony, 3-6 parts of aloe, 2-3 parts of fructus ulmi, 10-15 parts of marigold, 3-7 parts of mint, 6-10 parts of radix sophorae flavescentis, 3-4 parts of aconitine, 7-11 parts of pericarpium granati, 8-12 parts of tea saponin, 5.6-8.7 parts of emulsifying agent, 3-5 parts of penetrant and 4-7 parts of stabilizer. Through the synergistic effect of all the raw materials, the contact killing capacity and insect repelling capacity of the insecticide can be improved; by adding hairyvein agrimony, aloe, fructus ulmi, radix sophorae flavescentis and aconitine, the insecticide has the contact killing capacity for various types of harmful insects; by adding marigold and pericarpium granati, the insecticide has the repelling capacity for various types of harmful insects; thus, the vegetable insecticide is good in insect killing effect and can be widely used for controlling fruit and vegetable harmful insects such as cabbage caterpillar, aphid, armyworm, green fruitworm, oriental tobacco budworm, cotton bollworm, leaf folder and pear psylla, the control effect of the insecticide reaches 89-98%, and harmful insects can not have drug resistance.

The invention relates to the technical field of pesticide and discloses a pesticide for preventing and controlling Sphecosesia litchivora and a preparation method thereof. The pesticide is prepared from 12 to 22 parts by weight of volatile oil of Wedelia trilobata, 8 to 17 parts by weight of dichlorvos, 8 to 14 parts by wieght of extract of Artemisia scoparia, 12 to 22 parts by weight of bergamot oil, 7 to 14 parts by weight of purslane, 4 to 13 parts by wieght of green onion, 3 to 12 parts by weight of neem flowers, 35 to 46 parts by weight of vegetable oil, 7 to 13 parts by weight of a co-solvent and 3 to 13 parts by weight of a surfactant. The pesticide can effectively prevent and control Sphecosesia litchivora so that a lychee yield is improved. The pesticide has a residue period of only 8 to 10 days and human and animal safety is guaranteed. The invention also provides the preparation method of the pesticide for preventing and controlling Sphecosesia litchivora. The pesticide has a reasonable formula, has good Sphecosesia litchivora prevention and control effects, has short killing time, is environmentally friendly and harmless, greatly reduces injurious insect base and has a great advantage in prevention and control of Sphecosesia litchivora.

The invention relates to the technical field of pesticides, and discloses a pesticide for preventing and treating litchi stinkbug and a preparation method thereof. The pesticide is prepared from the following raw materials in parts by weight: 8-17 parts of Sphagneticola trilobata volatile oil, 7-16 parts of cypermethrin, 5-12 parts of Melia azedarach extract, 11-20 parts of bergamot oil, 5-13 parts of purslane, 3-12 parts of scallion, 2-10 parts of Azadirachta indica flower, 32-42 parts of vegetable oil, 6-12 parts of cosolvent and 2-12 parts of surfactant. The pesticide can effectively prevent and treat litchi stinkbug and enhance the litchi yield. The residual life of the pesticide liquor is only 7-10 days, so the liquor is safe for people and livestock. The invention also discloses a preparation method of the pesticide for preventing and treating litchi stinkbug. The pesticide for preventing and treating litchi stinkbug has the advantages of high litchi stinkbug prevention effect, short killing time and no pollution, greatly reduces the base number of pest population, and has huge advantages in preventing and treating litchi stinkbug.

The invention discloses a specific fertilizer with insecticidal activity. The specific fertilizer with the insecticidal activity is prepared from the following raw materials in parts by weight: 45-60parts of a nitrogen-potassium fertilizer, 35-45 parts of a biostimulant, 5-12 parts of a surfactant, and 3-5 parts of an anti-blocking agent, wherein the biostimulant is prepared from bacillus amyloliquefaciens LTBA02, and is preserved in the China Center for Type Culture Collection, and a preservation number is CCTCCNO: M2018433. A product of the specific fertilizer is a pure nutritional-type specific fertilizer, can be used as the specific fertilizer for providing nutrition for fruit trees, and used as an insecticide for preventing and treating plant diseases and insect pests in an orchard.The specific fertilizer does not contain any chemical insecticide components, has the characteristics of combination of pesticide into fertilizer, high fertilizer efficiency, stable pesticide effect,safety and no phytotoxicity, and is an efficient pollution-free green and environment-friendly new-type functional fertilizer. The invention further discloses a preparation method of a solid powder preparation prepared by the specific fertilizer. The method is simple, easy to realize industrialized production, and product quality is table.

The invention discloses a graphene hygienic disinfection wet tissue, which comprises a graphene spunlace non-woven fabric and a wet tissue liquid, and the wet tissue liquid comprises ultrapure water and isopropanol, wherein the ultrapure water accounts for 25%-60% of the weight of the wet tissue liquid, the isopropanol accounts for 40%-75% of the weight of the wet tissue liquid, and the viscose content of the graphene spunlace non-woven fabric is 10%-50%. According to the invention, because of strong permeability and sterilization and disinfection effects of isopropanol, the concentration of disinfection liquid can be reduced, a disinfectant does not need to be added, and the harm of chemical substances is avoided. The graphene has a sterilization effect, and three sterilization mechanismsof the graphene perform sterilization in a physical mode, so that the graphene has a very good sterilization effect on bacteria. The hygienic disinfection wet tissue does not contain irritant substances such as essence, does not have side effects on skin surface disinfection, has diverse uses, is convenient to carry and use, is rapid to volatilize without residues. The hygienic disinfection wet tissue of the invention has the advantages of simple production process, convenient operation and 99.9% of killing effect on Escherichia coli, Staphylococcus aureus, Candida albicans and the like.

The invention relates to the technical field of agricultural chemicals, and discloses a pesticide for preventing Arbela dea and a preparing method thereof. The pesticide is prepared from, by weight, 13-26 parts of volatile oil of Xanthium italicum Moretti, 10-18 parts of phoxim, 7-16 parts of extractive of Artemisia scoparia, 12-25 parts of bergamot oil, 6-18 parts of Portulaca oleracea L, 5-15 parts of Welsh onion, 6-13 parts of Azadirachta Indica A.Juss tree blossoms, 40-52 parts of vegetable oil, 7-14 parts of cosolvents, and 3-13 parts of surfactant. The pesticide for preventing Arbela dea can effectively prevent the Arbela dea and can improve improve litchi yield. Besides, the residual period of the pesticide is only 7-10 days, therefore the pesticide is safe to people and livestock. The preparing method of pesticide for preventing Arbela dea is also provided by the invention. The pesticide for preventing Arbela dea is characterized by having reasonable concerted application of pesticides, high controlling effects on Arbela dea, short killing time, meanwhile the pesticide is free from pollution, sharply reduces the cardinal number of the population of the pests, and has huge advantages in preventing the Arbela dea.

The invention relates to the technical field of insecticides, and particularly discloses an insecticide containing spinetoram and sulfoxaflor, a preparation method and application thereof. The insecticide containing spinetoram and sulfoxaflor is mainly prepared from the following raw materials in parts by weight: 3-25 parts of an active component A, 2-10 parts of an active component B, 1.2-3 parts of tetrabutyl ammonium hydroxide, 5-12 parts of an auxiliary agent and 50-80 parts of a solvent, wherein the active component A is composed of spinetoram and sulfoxaflor according to a mass ratio of (6-10): (1.5-4), and the active component B is composed of sodium polyphosphate, a surfactant and dimethyl sulfoxide according to a mass ratio of (7-12): (1-3). The insecticide disclosed by the invention can be used for preventing and treating pests of lepidoptera, thysanoptera, diptera and the like, and has the advantages of high infiltration capacity and good contact killing effect.

The invention belongs to the field of pesticides and particularly relates to insecticide composition for controlling nematode and mite pests. The insecticide composition is prepared from components asfollows: 0.5%-5% of abamectin and 70%-90% of diatomite, wherein the fineness of the diatomite is 325-500 meshes. The composition has good slow release effects, combines chemical and physical insecticidal mechanisms and can effectively control agricultural pests and provide multiple microelements required by plant growth.

An insecticide composition comprises the following components in part by weight: 10-15 parts of ethylene glycol dimethyl ether, 5-10 parts of dimethylbenzene, 2-5 parts of cyclohexane dichloromethane, 10-15 parts of ethyl acetate, 15-20 parts of methyl ethyl ketone, 3-9 parts of N, N-dimethyl acetamide, 3-5 parts of phoxim, 1-5 parts of hexaflumuron, 4-10 parts of sorbic acid, 2-8 parts of agar, 7-12 parts of sodium alkyl benzene sulfonate, 3-5 parts of cypermethrin, 1-4 parts of borax, 1-3 parts of ammonium molybdate and 1-3 parts of molybdenum oxide. The insecticide composition provided by the invention has the advantage that the contact injury and stomach toxicity of the composition to rice leaf roller larvae are obviously enhanced.

The invention belongs to the field of the agricultural technology, and discloses a mildew preventive special for wood. The mildew preventive comprises, by weight, 15-30 parts of copper chloride, 15-25parts of boric acid, 30-40 parts of carbendazim, 10-18 parts of phoxim emulsion, 30-50 parts of plant extract, 2-3.5 parts of a defoaming agent and 1,000-1,200 parts of ethyl alcohol. The mildew preventive special for the wood is good in mildew prevention effect and low in toxicity. A preparation method of the mildew preventive is provided.

The invention relates to a composition for controlling cnaphalocrocis medinalis, and the composition has contact killing property, stomach toxicity and ovicidal action, and comprises the following two active ingredients: abamectin and pyriproxyfen, wherein the weight ration of the abamectin to the pyriproxyfen is (1: 3) to (1: 14). Effective dose of the abamectin and the pyriproxyfen, a solid or liquid carrier, auxiliaries and other additives are used, the composition preparation is prepared by the conventional method, the composition preparation is used for treating the cnaphalocrocis medinalis or a habitat thereof, and the weight ratio of the abamectin to the pyriproxyfen in the composition preparation is (1: 3) to (1: 14). The composition can be used for overcoming the defect of short lasting period in the prior art, and shows significant synergy; and the application of the smaller dose of the composition for processing the cnaphalocrocis medinalis can show excellent contact killing property, stomach toxicity and ovicidal effect. The lasting period of the composition is long, and the quick killing activity for the cnaphalocrocis medinalis can be simultaneously enhanced.

The invention discloses an organic vegetable root watering agent and a using method thereof, the organic vegetable root watering agent is a compatible mixture prepared by compatibility of fresh leaves of thunder god vine, fresh leaves of red-knees herb, and tea seed meal, wherein the mass ratio of the fresh leaves of thunder god vine, the fresh leaves of red-knees herb and the tea seed meal is 2.0-3.0:1.0-2.0:0.5-1.0, and is preferably 2.5:1.5:0.75, the fresh leaves of thunder god vine and the fresh leaves of red-knees herb are weighed freshly, the tea seed meal is weighed according to the 1 to 30-day non-mildewed and non-moistened dry cake weight, the tea seed meal is first prepared into a tea seed meal fermented liquid by adding water in the proportion of tea seed meal to water of 1:10, the tea seed meal fermented liquid is used both as an assistant and an infusion medium, and the compatible infusion liquid is the concentrate liquid. This compatible agent has remarkable control effect on organic vegetable root knot nematode, and has synergic effect. Before and during the outbreak of the root knot nematodes in vegetables, 15 times of 5-15 kg per 667 m<2> of the concentrate liquid are applied by watering, the root knot nematodes can be quickly killed, the spread is prevented, the plant recovery is speeded up, and the organic vegetable root watering agent is easy to produce and use, simple to operate, low in cost, and remarkable in control effect.

The invention provides a chlorfenapyr suspension containing a semen pharbitidis methanol extract and application of the chlorfenapyr suspension in preventing and controlling crop pests. The chlorfenapyr suspension comprises the semen pharbitidis methanol extract and chlorfenapyr, wherein the mass ratio of the semen pharbitidis methanol extract to the chlorfenapyr is (1:65)-(1:1). The chlorfenapyrsuspension has the advantages that the semen pharbitidis methanol extract and the chlorfenapyr are compounded, the semen pharbitidis methanol extract can improve the excitability of insects, the excitation of the respiratory action of insect mitochondria is facilitated, the action of the chlorfenapyr on a target site is promoted, and a synergistic effect is ahiceved on target pests in a certain range; the semen pharbitidis methanol extract comprises fatty oil components, has wide biological activity, has a certain permeability to the insect epidermis, and can enhance the contact killing effectof the chlorfenapyr; the control effect is better than a single agent, and the service life of the chlorfenapyr can be prolonged; the pesticide dosage is reduced, the crop residual quantity is reduced, the environmental pollution is reduced; the pesticide-resistant development of various insect pests is retarded; the resistance to rain erosion is achieved.

The invention discloses compound gelatinization pyrethrin for desert green planting and a preparation method thereof. The pyrethrin is divided into two components A and B. Taking ethelene glycol monophenyl ether, pyridine, ammonium bicarbonate aqueous solution with a mass concentration of 10%, nickel powder, deionized water, trans-dichlorochrysanoyl chloride and perfluoropolyether oil as raw materials and taking toluene, diluted hydrochloric acid with a mass concentration of 10% and calcium hydroxide solution with a mass concentration of 10% as process auxiliary materials, the component A is finally obtained through two-stage polycondensation, extraction, alkali washing, pickling, neutralization and dehydration. Taking corn starch and rice bran as raw materials, the component B is obtainedby filtering out solid content after fermentation under the action of a bacillus licheniformis; and the pyrethrin is a pectin-based gel peptone finally obtained by mixing the components A and B and then reacting with calcium ions in the component A through nicandra seed grinding. The compound gelatinization pyrethrin has the advantages of being specially suitable for desert environment, performing double killing of adults and larvae, having a long-lasting effect, performing fundamental solution to target pests, having a moisture slow release function and having a nutritional supplement function.

The invention discloses a pyrethrin and biological fungus intermixing mosquito-killing agent and a manufacturing method thereof. Taking ethelene glycol monophenyl ether, pyridine, ammonium bicarbonateaqueous solution with a mass concentration of 10%, nickel powder, deionized water, trans-dichlorochrysanoyl chloride and perfluoropolyether oil as raw materials and taking toluene, diluted hydrochloric acid with a mass concentration of 10% and sodium hydroxide solution with a mass concentration of 10% as process auxiliary materials, the component A is finally obtained through two-stage polycondensation, extraction, alkali washing, pickling, neutralization and dehydration. The component B is potato starch where Guiyang pythium fungi with a concentration of 1*10<7> cfu / g-1*10<8> cfu / g are preserved. The pyrethrin and biological fungus intermixing mosquito-killing agent has the advantages of no obvious poison to the human body, double killing of adults and larvae, lasting pesticide effect and fundamental solution to target pests.

The invention relates to the technical field of pesticides, and discloses a pesticide for preventing and treating litchi spotted cerambycid and a preparation method thereof. The pesticide is prepared from the following raw materials in parts by weight: 14-29 parts of Sisyrinchium rosulatum volatile oil, 9-19 parts of malathion, 11-22 parts of Melia azedarach extract, 10-22 parts of bergamot oil, 8-17 parts of purslane, 6-15 parts of scallion, 5-13 parts of Azadirachta indica flower, 41-55 parts of vegetable oil, 6-12 parts of cosolvent and 3-14 parts of surfactant. The pesticide can effectively prevent and treat litchi spotted cerambycid and enhance the litchi yield. The residual life of the pesticide liquor is only 8-11 days, so the liquor is safe for people and livestock. The invention also discloses a preparation method of the pesticide for preventing and treating litchi spotted cerambycid. The pesticide for preventing and treating litchi spotted cerambycid has the advantages of high litchi spotted cerambycid prevention effect, short killing time and no pollution, greatly reduces the base number of pest population, and has huge advantages in preventing and treating litchi spotted cerambycid.

The invention discloses a root-watering agent for organic vegetables and a method for using the root-watering agent. The root-watering agent is composed of fresh leaves of Tripterygium wilfordii, fresh leaves of Polygonum capericum and tea seed dregs. The fresh leaves of Tripterygium wilfordii and fresh leaves of Polygonum pepper , The mass ratio of tea seed meal is a compatible mixture of 2.0~3.0:1.0~2.0:0.5~1.0, the preferred ratio is 2.5:1.5:0.75. Based on the weight of dry cakes that are not mildewed and hygroscopic for 1 to 30 days, tea seed meal needs to be added with water at a ratio of 1:10 to make tea seed meal fermentation liquid, which is used as an auxiliary agent and also as a brewing medium , this compatible brewing solution is the stock solution. The compatibility agent has remarkable control effect on organic vegetable root-knot nematode and has synergistic effect. Before or during the outbreak of vegetable root-knot nematode, watering with 15 times of stock solution per 667m25-15kg can kill root-knot nematode quickly, prevent the spread and speed up the recovery of plants. The root watering agent is easy to use in production, simple to operate, low in cost and remarkable in control effect.

The invention discloses an organic vegetable aphid control agent and a use method thereof. The control agent is brewed from Tripterygium wilfordii root, Polygonum stalk, human urine and Camellia oleifera cake. , The mass ratio of Camellia oleifera cake is a compatible mixture of 3.0~4.0:1.0~2.0:6.0~8.0:0.5~1.0, the preferred ratio is 3.5:1.5:7.5:0.75, Tripterygium wilfordii root and Polygonum oleifera stem are calculated by fresh weight, Camellia oleifera cake The calculation is based on the weight of dry cakes that are not moldy and hygroscopic for 1 to 30 days, and the weight of human urine is based on the weight of pure urine that has not been mixed with feces for 1 to 30 days. Human urine is the brewing medium and oil tea cake is the auxiliary agent. The solution is the stock solution. The compatibility agent has remarkable control effect on organic vegetable aphids and has synergistic effect. For the control of pests, spray 5-15kg stock solution 10 times per 667m2, which can quickly kill aphids, prevent the spread of pests, and supplement nitrogen and other nutrients to speed up the recovery of pest-infested plants. The control agent is easy to use in production, simple to operate, low in cost and remarkable in control effect.

The invention discloses a humic acid contained water soluble fertilizer with insecticidal activity. The humic acid contained water soluble fertilizer with the insecticidal activity is prepared from the following raw materials in parts by weight: 25-35 parts of a nitrogen-potassium fertilizer, 45-60 parts of a biostimulant, 5-12 parts of a surfactant, and 3-5 parts of an anti-blocking agent, wherein the biostimulant is prepared from bacillus amyloliquefaciens LTBA02, and is preserved in the China Center for Type Culture Collection, and a preservation number is CCTCCNO: M2018433. A product of the humic acid contained water soluble fertilizer is a pure nutritional-type humic acid contained water soluble fertilizer, can be used as the humic acid contained water soluble fertilizer for providingnutrition for fruit trees, and used as an insecticide for preventing and treating plant diseases and insect pests in an orchard. The humic acid contained water soluble fertilizer does not contain anychemical insecticide components, has the characteristics of combination of pesticide into fertilizer, high fertilizer efficiency, stable pesticide effect, safety and no phytotoxicity, and is an efficient pollution-free green and environment-friendly new-type functional fertilizer. The invention further discloses a preparation method of a solid powder preparation prepared by the humic acid contained water soluble fertilizer. The method is simple, easy to realize industrialized production, and product quality is table.

The invention relates to the technical field of agricultural chemicals, and discloses a pesticide for preventing litchi geometrid moths and a preparing method thereof. The pesticide is prepared from, by weight, 18-30 parts of volatile oil of A. conyzoides, 8-17 parts of quinalphos, 8-15 parts of extractive from Duranta repens, 12-22 parts of bergamot oil, 7-14 parts of Cnidium monnieri(L.)Cuss, 4-13 parts of Welsh onion, 4-13 parts of Azadirachta Indica A.Juss tree blossoms, 28-40 parts of vegetable oil, 6-12 parts of cosolvent, and 4-14 parts of surfactant. The pesticide for preventing litchi geometrid moth can effectively prevent litchi geometrid moths and improve litchi yield. Besides, the residual period of the pesticide is only 8-11 days, therefore the pesticide is safe to people and livestock. The preparing method of pesticide for preventing litchi geometrid moths is also provided by the invention. The pesticide for preventing litchi geometrid moths is characterized by having reasonable concerted application of pesticides, high controlling effects on litchi geometrid moths, short killing time, meanwhile the pesticide is free from pollution, sharply reduces the cardinal number of the population of the pests, and has huge advantages in preventing the litchi geometrid moths.

The invention discloses a wheat pesticide and a preparation method thereof. The pesticide is prepared from the following raw materials, by weight, 4-8 parts of stipa sibirica lam, 5-7 parts of pokeberry roots, 2-4 parts of schisandra chinensis, 10-15 parts of lonicera japonica, 4-5 parts of crofton weeds, 7-10 parts of mint, 6-10 parts of sophora flavescens, 3-4 parts of aconitine, 6-11 parts of tea saponin, 6.3-9.4 parts of emulgators, 3.2-5.5 parts of penetrants and 6.5-9.6 parts of stabilizers. By using a synergistic effect of the above raw materials, the wheat pesticide has improved abilities of killing pests in a contact mode and repelling pests, the raw materials have no wheat phytotoxicity and residue in wheat, and the wheat pesticide has the advantages of being safe for people and livestock and free of pollution; due to the addition of stipa sibirica lam, pokeberry roots, schisandra chinensis, lonicera japonica, sophora flavescens and aconitine, the wheat pesticide has the ability of killing multiple kinds of pests in the contact mode; due to the addition of crofton weeds, the wheat pesticide has the ability of repelling several kinds of pests; therefore, the wheat pesticide has a good effect of killing pests, and the pests cannot produce resistance to the wheat pesticide.

The invention discloses a preparation method of an efficient biological insecticide, and belongs to the technical field of pesticide preparation. The method includes the steps: performing magnetization pretreatment on deionized water to stimulate the spore production performance of bacillus thuringiensis, aschersonia and Moller bacteria; wrapping food and digestive enzyme to enter an intestinal tract to be digested and absorbed; destroying and penetrating an intestinal membrane to prevent insects from normally molting and transfiguring to kill the insects. Methyl polyethylene glycol and succinic anhydride serves as raw materials, enzyme production active centers are protected, insect killing performance is improved, L-canavanine, cinnamic acid and P-cumaric acid are added, penetration of insect killing active components is facilitated, nutrient substances for inducing injurious insects are added, the grazing rate of the injurious insects for the insecticide is increased, Congo red is added, ultraviolet light is absorbed, active bacterium agents are protected, and contact killing effect is enhanced. The efficient biological insecticide solves the problems that a current insecticideis poor in insect killing efficiency and short in insect killing effective time, and the injurious insects can generate drug resistance when the current insecticide is used.

The invention relates to a composition for killing rice leaf rollers, having touch-out property, stomach poison property and ovicidal function and comprising two active components of emamectin benzoate and pyriproxyfen, wherein the weight ratio of the emamectin benzoate to the pyriproxyfen is between 1:4 and 1:24, the preparation of the composition can be prepared from effective dose of emamectin benzoate and pyriproxyfen in the presence of a solid or liquid carrier, an addition agent and other additives by a conventional method and is used for processing the rice leaf rollers or habitats thereof, and the weight ratio of the active components of the emamectin benzoate and the pyriproxyfen is between 1:4 and 1:24 in the composition preparation. The composition overcomes the defect of short lasting period in the prior art, shows obvious synergy, can display better touch-out property, stomach poison property and ovicidal effect on rice leaf rollers at smaller dose, has a long lasting period and increases quick killing activity for the rice leaf rollers.