31results about How to "No environmental toxicity" patented technology

The invention discloses a water treatment compound agent based on potassium ferrate. The water treatment compound agent comprises the following components by mass percent: 8-35 percent of potassium ferrate, 25-50 percent of polymeric ferric sulfate, 20-40 percent of diatomite, 5-20 percent of calcium hydroxide and 3-8 percent of sodium hydroxide. A preparation method of the water treatment compound agent comprises the following steps of: adding the components into a dry vessel one by one, introducing dry inert gas to carry out protection, uniformly mixing under the condition of room temperature, and storing a mixture in the inert gas environment and a sealed and dark position without water. With the adoption of the water treatment compound agent, the cost investment in the water treatment process is effectively lowered, and the water treatment effect of potassium ferrate can also be further improved; and the water treatment compound agent is wide in component source and good in biocompatibility, has low cost, does not have environmental toxicity and accords with the requirement of greening of water treatment.

The invention discloses a method for preparing a porous starch microsphere loaded potassium ferrate sewage treatment complexing agent. The porous starch microsphere loaded potassium ferrate sewage treatment complexing agent comprises the following components in percentage by mass: 50-70 percent of porous starch microsphere loaded potassium ferrate complex, 20-40 percent of polymeric ferric sulfate and 10-20 percent of diatomite, wherein the porous starch microsphere loaded potassium ferrate complex is a complex prepared by dissolving potassium ferrate in an aqueous solution of KOH with the pH of 12, adding porous starch microspheres for complexing and adsorbing. According to the novel water treatment complexing agent, a slow release effect on the oxidizing ability of the potassium ferrate is realized, and the sewage treatment capacity of the potassium ferrate is improved. In addition, due to addition of the polymeric ferric sulfate and diatomite, the complexing and adsorbing capacity of the complexing agent can be further improved, and the sewage treatment effect is improved.

The invention discloses a vegetable insecticide and a preparation method and application thereof. The insecticide is prepared from, by weight, 5-10 parts of ginkgo seed husks, 2-5 parts of metarhizium anisopliae powder, 5-10 parts of herba houttuyniae, 2-5 parts of fructus forsythiae, 10-20 parts of Chinese pyrola herb, 5-10 parts of radix arnebiae, 2-5 parts of herba eupatorii, 5-10 parts of synergist, 5-10 parts of buprofezin, 2-5 parts of spinosad and 20-50 parts of water. The insecticide is free of pollution, safe and obvious in deinsectization effect.

The invention discloses a pharmaceutical composition used for beetles. The pharmaceutical composition comprises nidus vespae extract, fructus ulmi extract, tripterygium glycosides extract, Lindera chunii Merr. extract, Caesalpinia minax extract, periostracum cicada extract, gentiana macrophylla extract, Iris tectorum Maxim. extract, radix euphorbiae lantu extract and azadirachtin. The pharmaceutical composition is capable of killing the beetles in a targeted manner, free of toxic and side effects on the natural enemies of the beetles, good in safety, good in biodegrability, free of pollution and pungent smell, free of environment toxic effect, free of residues in animal bodies, incapable of destroying ecological balance, small in influence on crop growth environments, good in permeabilityand wetting performance, capable of interfering the central nervous systems of the beetles, capable of inhibiting beetle egg development, less prone to tolerance generation, quick in action and suitable for being widely popularized and used in pest control.

The invention discloses an environment-friendly insecticide and a preparation method and application thereof. The insecticide is prepared from, by weight, 30-50 parts of the root of Chinese pulsatilla, 80-100 parts of pyrola, 10-20 parts of thunder god vine, 10-20 parts of radix euphorbiae lantu, 25-40 parts of radix arnebiae seu lithospermi, 10-20 parts of eupatorium, 5-10 parts of polysorbate, 5-10 parts of dimethyl sulfoxide, 2-5 parts of turpentine, 2-5 parts of ethyl alcohol, 1-2 parts of sorbic acid and 100-200 parts of softened water. The insecticide is free of pollution, safe and obvious in deinsectization effect.

The invention discloses a medium-low temperature SCO denitration catalyst and a preparation method thereof, and relates to a two-step method and a three-step method. A catalyst material is solid powder and comprises the following substances in percentage by weight: 40 to 60 percent of manganese oxide, 40 to 60 percent of iron oxide and 0.0003 to 0.005 percent of graphene. The two-step method comprises the following steps: (1) mixing potassium permanganate, concentrated hydrochloric acid, ultrapure water and reduced graphene oxide, and carrying out a reaction to obtain an intermediate product;and (2) filtering, washing and drying a product obtained after a hydrothermal reaction of the product obtained in the previous step, manganese acetate, ferric nitrate, polyethylene glycol 1000 and potassium permanganate to obtain the catalyst. According to the three-step method, on the basis of the two-step method, the product in the previous step is subjected to a hydrothermal reaction with manganese acetate, ferric nitrate, polyethylene glycol 1000 and potassium permanganate, and the product is filtered, washed and dried. The catalytic oxidation efficiency of the two-step catalyst to NO at 200 DEG C reaches 50%, and the catalytic oxidation efficiency of the three-step catalyst can reach 80% or above. Compared with an existing ferromanganese catalyst, the low-temperature catalytic efficiency of the catalyst is higher, the industrial requirement can be better met, and the catalyst has great potential application prospects in the field of low-temperature denitration.

The invention discloses an insecticide and a preparation method thereof. The insecticide is prepared by using the following raw materials in the weight ratio: 10-20 parts of calla lily, 50-60 parts of deer's grass, 5-10 parts of vine vine, mother-in-law 5-10 parts of grass, 20-30 parts of comfrey, 5-10 parts of Perrin, 0.5-5 parts of polysorbate, 0.5-5 parts of dimethyl sulfoxide, 1-3 parts of turpentine, 1-3 parts of ethanol, flower 0.5-1 part of catallic acid and 50-100 parts of demineralized water. The insecticide of the present invention is pollution-free, safe and has obvious insecticidal effect.

The invention relates to a beta-type-hydroxyl-ferric-oxide-loaded natural-cellulose-modified functional material and a preparing method and application thereof, and belongs to the technical field of industrial wastewater treatment.The preparing method of the material includes the steps of preparing natural cellulose, modifying the natural cellulose and loading beta-type hydroxyl ferric oxide.The prepared functional material has more adsorption point locations and multiple adsorption performances, other ions and salt in water can be adsorbed, and the problem of strong brine treatment generated during deep treatment of arsenious wastewater at present is solved.The functional material is high in adsorption capability, the concentration of discharged treated arsenious wastewater is lower than 0.05 mg / L, selective desorption can be carried out according to different adsorption modes, and the function material is easy to degrade, free of environmental toxicity and easy to apply and popularize.

The present invention discloses a mole cricket killer uneasily causing drug resistance. The mole cricket killer includes common knotgrass herb extract, borneol extract, bigleaf beautyberry leaf extract, fennel extract, milkwort root extract, roof iris rhizome extract, honeysuckle stem extract, ciderage extract, long-nosed pit viper extract and monocrotophos. The medicinal composition described inthe present invention can kill mole cricket specifically, has no toxic or side effects on natural enemies of mole cricket, has good safety, good biodegradation, no pollution or irritating odor, no environmental toxicity, and no residues in animals, does not destroy ecological balance, generates little impact on crop growth environment, has good permeability and wettability, interferes with the central nervous system of the inset bodies, inhibits egg synthesis and development, uneasily generates drug resistance, is good in quick-acting effect, and is suitable for widespread promotion and application in pest control.

The invention discloses a pesticidal composition for killing root-knot nematode. The pesticidal composition comprises a pumpkin seed extract, an arsenolite extract, a semen pharbitidis extract, a radish stem-and-leaf extract, a radish seed extract, a Stellera chamaejasme extract, a Polygonum perfoliatum extract, a Caesalpinia minax extract, a Ficus microcarpa extract and veratridine. The pesticidal composition provided by the invention has the following advantages: capability of targetedly killing the root-knot nematode, no toxic and side effects to natural enemies of the root-knot nematode, good safety, good biodegradation, no pollution and irritating odor, no environmental toxicity, no residues in animals, no damage to ecological balance, little influence on the growth environment of crops, good permeability and wettability, interference to the central nervous system of a midge body, inhibition of combination and development of midge eggs, insusceptibility to generation of pesticideresistance, good fast-acting property, and applicability to extensive popularization and application in the fields of prevention and treatment of pests.

The present invention discloses a radish killing agent suitable for large-scale production. Extract, Cinnamon Extract, Qingming Willow Extract and Indoxacarb. The pharmaceutical composition described in the present invention can specifically kill the burdock mud, and has no toxic and side effects on the natural enemies of the burdock mud, has good safety, good biodegradation, no pollution and irritating smell, and no environmental toxicity. There is no residue in the animal body, does not destroy the ecological balance, and has little impact on the crop growth environment; it has good permeability and moisture, interferes with the nervous system of the insect body, inhibits the synthesis and development of insect eggs, and is not easy to develop drug resistance; quick-acting Well, it is suitable for widespread application in pest control.

The invention discloses a preparation method of a pesticide composition for killing cotton bollworms. The preparation method comprises the following steps: 1) preparing raw materials; 2) adding waterto decoct semen hydnocarpi, fructus ulmi and cortex pseudolaricis twice, obtaining a pesticide liquid for later use; 3) adding water to decoct rhizome of canereed spiralflag, herba houttuyniae, flowerbelge, salix magnifica, radix curcumae and iris tectorum twice, filtering, concentrating a filtrate to the relative density of 1.15; 4) combining pesticide liquid; 5) regulating the pH value of a solution; 6) performing filtration, filling, and sterilization to obtain the pesticide composition. The pesticide composition kills the cotton bollworms in a targeted manner, is good in safety and biological degradation, is pollution-free, has no pungent smell, no environmental toxic effect and no residue in an animal, does not destroy the ecological balance, has low effects on the growing environmentof a crop, is relatively good in permeability and wettability, kills the central nervous system of an insect, inhibits the formation and development of a worm egg, does not cause drug resistance easily, is good in fast-acting property, and is suitable for extensive popularization and application in the field of pest control.

The invention discloses a medicinal composition for killing rice vertebrae. Chinensis extract, Xinyi extract and cypermethrin. The pharmaceutical composition described in the present invention can kill rice plants in a targeted manner, has no toxic and side effects on the natural enemies of rice plants, has good safety, good biodegradation, no pollution and irritating odor, and has no environmental toxicity. There is no residue in the animal body, does not destroy the ecological balance, and has little impact on the growing environment of crops; it has good permeability and wettability, interferes with the nervous central system of the parasite, inhibits the synthesis and development of the eggs, and is not prone to drug resistance; fast-acting Good, suitable for widespread application in pest control.

The invention discloses a preparation method of a pharmaceutical composition for killing beet armyworm. The preparation method comprises the following steps: 1) preparing raw materials; (2) adding water into radix stemonae, nidus vespae and fructus quisqualis, and decocting twice to obtain medicinal liquor for later use; 3) adding water into semen raphani, fennel, long-noded pit viper, radix flemingiae philippinensis, herba kummerowiae striatae and herba teucrii viscidi, decocting for twice, filtering, and concentrating the filtrate till the relative density is 1.15; 4) mixing the medicinal liquor; 5) regulating the pH value of the solution; 6) filtering, filling and sterilizing to obtain the pharmaceutical composition. The pharmaceutical composition disclosed by the invention can be usedfor specifically killing the beet armyworm, has the advantages of high safety, high biodegradability, freeness from pollution and pungent smell, freeness from environmental toxicity, no residues in animals, no damage to biological balance, low influence on the crop growing environment, higher permeability, higher moistening property, capabilities of interfering the central nervous system of the beet armyworm and restraining synthetic development of worm eggs, non-tendency to pesticide resistance and high fast-acting property, and is suitable for being widely popularized and applied on the aspect of pest prevention and control.

The invention discloses a preparation method of a medicinal composition for killing wheat aphids, which comprises the following steps: 1) preparing raw materials; 2) decocting gentleman, soap alum, and dry lacquer charcoal with water for two times, and preparing the medicinal liquid for later use; 3) ) Eupatorium, small thistle, green fruit, berberine, green bark, and banyan tree must be decocted twice, filtered, and the filtrate is concentrated to a relative density of 1.15; 4) Combine the liquid medicine; 5) Adjust the pH value of the solution; 6) Filter and pour Pack, sterilize, and get ready. The pharmaceutical composition described in the present invention can kill wheat aphids in a targeted manner, has good safety, good biodegradation, no pollution and irritating odor, no environmental toxicity, no residue in animals, and no damage to ecological balance. It has little impact on the crop growth environment; it has good permeability and wetness, interferes with the nervous system of insects, inhibits the synthesis and development of insect eggs, and is not easy to develop drug resistance; it has good quick effect and is suitable for widespread application in pest control.

The invention discloses a pharmaceutical composition for killing Spodoptera litura, which comprises extracts of sage fruit, torreya seed extract, pomegranate husk extract, Xiaofeiyang extract, Qingfengteng extract, banyan beard extract, and dichwheat extract , Qingdai Extract, Coptis Rhizoma Extract and Indoxacarb. The pharmaceutical composition described in the present invention can kill Spodoptera litura in a targeted manner, has no toxic and side effects on natural enemies of Spodoptera litura, has good safety, good biodegradation, no pollution and pungent smell, and no environmental toxicity , there is no residue in the animal body, does not destroy the ecological balance, and has little impact on the crop growth environment; it has good permeability and moisture, interferes with the nervous system of the insect body, inhibits the synthesis and development of insect eggs, and is not easy to develop drug resistance; It has good quick effect and is suitable for wide popularization and application in pest control.

The invention discloses a preparation method of a pharmaceutical composition for rapidly killing green fruitworms. The method comprises the following steps: 1) preparing raw materials; 2) adding waterinto camphor, polygonum aviculare and cyrtomium fortune to decoct twice, thereby obtaining medicinal liquor for later use; 3) adding water into groundsel, bete pepper, euphorbia lathyris, paniculateswallowwort root, kummerowia striata and callicarpa nudiflora to decoct twice, filtering, and concentrating filtrate until the relative density is 1.8; 4) merging the medicinal liquor; 5) regulating the pH value of the solution; and 6) filtering, filling and sterilizing, thereby obtaining the pharmaceutical composition. The pharmaceutical composition disclosed by the invention is capable of killing green fruitworms in a targeted manner, is high in safety, excellent in biological degradability and free of pollution and pungent smell, does not have any environmental toxic effect, does not have any residue in animal bodies, does not destroy the ecological balance and has slight influence on a crop growth environment. Moreover, the pharmaceutical composition has excellent permeability and wetting property, is capable of interfering with the central nervous systems of worms and inhibiting growth and development of worm eggs, is less prone to drug tolerance, and is high in quick-acting property, thus being worthy of being widely popularized and used in the pest control aspect.

The invention discloses a preparation method of a pharmaceutical composition for beetles, comprising the following steps: 1) preparing raw materials; 2) adding water to decoct ababa, tripterygium wilfordii, and aloe for two times, and preparing the medicinal liquid for later use; 3) cinnamon, Add water to decoct Qianda hammer, saponins, magnolia, gourd tea, and spicy Polygonum twice, filter, and concentrate the filtrate to a relative density of 1.8; 4) combine the liquid medicine; 5) adjust the pH value of the solution; 6) filter, pour Pack, sterilize, and get ready. The pharmaceutical composition described in the present invention can kill beetles in a targeted manner, has good safety, good biodegradation, no pollution and irritating odor, no environmental toxicity, no residue in animals, and no damage to ecological balance. The crop growth environment has little impact; it has good permeability and wetness, interferes with the central nervous system of insects, inhibits the synthesis and development of insect eggs, and is not easy to develop drug resistance; it has good quick effect and is suitable for widespread application in pest control.

The invention discloses a pharmaceutical composition for killing liriomyza sativae, containing common carpesium fruit extract, pharbitis seed extract, garlic extract, radix gentianae extract, houttuynia cordata extract, fructus nelumbinis root extract, notopterygium incisum extract, myristica fragrans extract, radix aristolochiae extract and cnidium lactone. The pharmaceutical composition disclosed by the invention can kill liriomyza sativae in a targeted manner, has no toxic or side effect to the natural enemy of liriomyza sativae, is good in safety and good in biodegradation, does not have pollution or pungent smell, does not have environmental toxic effect, does not have residues in an animal body, cannot damage ecological balance, and is slight in influence on growth of crops, has goodpermeability and wettability, disturbs the nerve center system of the insect body, can inhibit the synthesis and development of eggs, and does not generate drug resistance easily, and is good in fast-acting property and suitable for being widely popularized and applied in the aspect of pest control.

The invention discloses a leaf-roller killing agent without polluting an environment. The leaf-roller killing agent is prepared from a honeycomb extract, an aloe extract, a radix tripterygii wilfordiiextract, a folium raphani extract, a herba houttuyniae extract, a radix euphorbiae ebracteolatae extract, a herba gendarussae extract, a radix et caulis opuntiae dillenii extract, a fructus canarii extract and osthole. A medicinal composition provided by the invention can be used for killing a leaf roller in a targeting manner, further, has no any toxic and side effects on a natural enemy of theleaf roller, is good in safety and good to biodegrade, has no pollution and pungent smells, has no environmental toxic effect, has no residue in an animal body, does not destroy ecological equilibrium, slightly influences the growth environment of a crop, has better permeability and wettability, interferes the central nervous system of polypide, inhibits the synthesis and the development of an ovum, is good in fast-acting property, and is suitable for being widely popularized and applied in the aspect of pest control, and the drug tolerance is difficultly generated.

The invention discloses a preparation method of a medicinal composition for killing red spider mites, which comprises the following steps: 1) preparing raw materials; 2) decocting alum, veratrum, and pomegranate peel with water for two times, and the medicinal liquid for later use; 3) soap Add water to decoct the horned thorn, cumin, small Huanhun, Qingming willow, yarrow, and magnolia twice, filter, and concentrate the filtrate to a relative density of 1.15; 4) Merge the liquid medicine; 5) Adjust the pH value of the solution; 6) Filter, Filling, sterilization, that is. The pharmaceutical composition described in the present invention can kill spider mite in a targeted manner, has good safety, good biodegradation, no pollution and irritating odor, no environmental toxicity, no residue in animals, and no damage to ecological balance. It has little impact on the crop growth environment; it has good permeability and wetness, interferes with the nervous system of insects, inhibits the synthesis and development of insect eggs, and is not easy to develop drug resistance; it has good quick effect and is suitable for widespread application in pest control.

The invention discloses a preparation method of a medicinal composition for poisoning and killing leafhoppers, comprising the following steps: 1) preparing raw materials; 2) adding water to decoct ababa, tripterygium wilfordii, and aloe for two times, and preparing the medicinal liquid for later use; 3) cassia cinnamon . Filling, sterilization, that is. The pharmaceutical composition described in the present invention can kill leafhoppers in a targeted manner, has good safety, good biodegradation, no pollution and irritating odor, no environmental toxicity, no residue in animals, and no damage to ecological balance. It has little impact on the crop growth environment; it has good permeability and wetness, interferes with the nervous system of insects, inhibits the synthesis and development of insect eggs, and is not easy to develop drug resistance; it has good quick effect and is suitable for widespread application in pest control.

The invention discloses an apple pesticide and a preparation method thereof, and belongs to the field of pesticides. The pesticide is prepared from the following raw materials in parts by weight: 15-25 parts of benzalkonii bromidum, 0.01-5 parts of didoctyl dimethyl ammonium chloride, 2-4 parts of emamectin benzoate, 30-40 parts of folium artemisiae argyi, 15-25 parts of flos caryophylli and 50-60parts of luffa pericarp. The pesticide is free of pollution, is safe and is obvious in deinsectization effect.

The invention discloses a pharmaceutical composition for killing aphids. The pharmaceutical composition is prepared from a folium callicarpae formosanae extract, an arsenolite extract, a bud of hairyvein agrimony extract, a salix magnifica extract, a caulis lonicerae extract, an alpine yarrow herb extract, a cortex cinnamomi extract, a radix dipsaci extract, a red-knees herb extract and chlorbenzuron. The pharmaceutical composition disclosed by the invention can be used for specifically killing the aphids, has the advantages of freeness from toxic and side effects on natural enemies of the aphids, high safety, high biodegradability, freeness from pollution and pungent smell, freeness from environmental toxicity, no residues in animals, no damage to biological balance, low influence on thecrop growing environment, higher permeability, higher moistening property, capabilities of interfering the central nervous system of the aphids and restraining synthetic development of worm eggs, non-tendency to pesticide resistance and high fast-acting property, and is suitable for being widely popularized and applied on the aspect of pest prevention and control.

The invention discloses a preparation method of a mole cricket killing agent unlikely to cause pesticide resistance. The method includes the following steps of preparing raw materials; decocting beehives, quispualis indica and pericarpium granati with water twice to obtain pesticide liquid for use; decocting notopterygium roots, curcuma aromatica, euphorbia hypericifolia, polygonatum sibiricum, moleplant seeds and aconitum gymnandrum maxim with water twice, conducting filtration to obtain a filtrate, and then concentrating the filtrate till the relative density is 1.8; mxing all pesticide liquid; adjusting the pH value of the mixed liquid; conducting filtration, filling and sterilization to obtain the finished product. The pesticide composition can specifically kill mole crickets and is high in safety, excellent in bio-degradation, free of pollution, pungent smell, a toxic effect on the environment, residues in the bodies of animals and damage to the ecological balance, less in influence on the growth environment of crops, great in permeability and wettability, capable of disturbing the neural center systems of the mole crickets and inhibiting the generation and growth of eggs of the mole crickets, unlikely to cause the pesticide resistance, great in fast-acting property, and suitable for wide application and popularization in prevention and control of pests.

The invention discloses a pharmaceutical composition for killing whitefly, which comprises extracts of leeches, extracts of veratrum, extracts of Cranegrass buds, extracts of xuejianchou, extracts of Qiannianjian, extracts of banyan tree whiskers, Flower Extract, Gorgon Seed Extract, Cotton Root Extract and Monocrotophos. The pharmaceutical composition described in the present invention can kill whitefly in a targeted manner, and has no toxic or side effects on natural enemies of whitefly, has good safety, good biodegradation, no pollution and irritating smell, and no environmental toxicity. There is no residue in the animal body, does not destroy the ecological balance, and has little impact on the crop growth environment; it has good permeability and moisture, interferes with the nervous system of the insect body, inhibits the synthesis and development of insect eggs, and is not easy to develop drug resistance; quick-acting Well, it is suitable for widespread application in pest control.

The invention discloses a preparation method of a drug composition for killing out sitodiplosis mosellana. The method comprises the following steps of (1) preparing raw materials; (2) adding water fordecocting herba agrimoniae, camphor and calomel for twice, and obtaining a medicine liquor for standby use; (3) adding water for decocting herba lycopi, fructus crataegi, ginseng, caulis sinomenii, caesalpinia minax and rhizoma seu radix notopterygii for twice, filtering, and concentrating a filter liquor until the relative density is 1.15; (4) merging the medicine liquors; (5) adjusting a pH value of the solution; (6) filtering, filling, and sterilizing to obtain the drug composition. The drug composition provided by the invention can be specifically used for killing out the sitodiplosis mosellana, has good safety, good biodegradation, no pollution and pungent smell, no environmental toxicity, and no residue in animals, does not damage ecological balance, and has less influence on a cropgrowth environment; has better permeability and wettability, interferes nerve center systems of polypide, inhibits worm egg synthesis development, and is not easy to occur tolerance; has a good fast-acting property, and is suitable to be widely popularized and applied in pest control.

The invention discloses a preparation method of a medicinal composition for killing corn borer, comprising the following steps: 1) preparing raw materials; 2) decocting Torreya japonica, Tripterygium wilfordii and aloe vera with water for two times, and the medicinal liquid is ready for use; 3) saffron, Sophora japonica rice, Huangguo eggplant, wolf poison, cucumber kernel grass, and Polygonatum japonica were boiled twice with water, filtered, and the filtrate was concentrated to a relative density of 1.15; 4) Combine the medicinal liquids; 5) Adjust the pH value of the solution; 6) Filter , filling, sterilization, that is. The pharmaceutical composition described in the present invention can kill the corn borer in a targeted manner, has good safety, good biodegradation, no pollution and irritating odor, no environmental toxicity, no residue in animals, and no damage to ecological balance. It has little impact on the growing environment of crops; it has good permeability and wettability, interferes with the nervous central system of the insect body, inhibits the synthesis and development of eggs, and is not prone to drug resistance; it has good quick-acting properties and is suitable for widespread application in pest control.

The invention discloses a preparation method of a pharmaceutical composition for killing whiteflies. The method comprises the following steps of 1, preparing raw materials; 2, decocting radix stemonae, dry lacquer resin and buds of hairyvein agrimony with water twice, and reserving pesticide liquid for use; 3, decocting bunge cherry seeds, radix euphorbiae lantu, gentiana macrophylla, flemingia philippinensis, notopterygium and teucrium viscidum with water twice, filtering the mixture, and concentrating filtrate until the relevant density reaches 1.15; 4, mixing the pesticide liquid; 5, adjusting a pH value of a solution; 6, filtering, filling and sterilizing the pesticide liquid to obtain a pharmaceutical composition. The pharmaceutical composition can be used for eradicating the whiteflies in a targeted way, is good in security and biodegradation and free of pollutants, pungent odor and environmental toxicity effect, does not break ecological balance and has a small influence on thecrop growth environment, and no residue remains in animals. The pharmaceutical composition interferes with central nervous systems of the whiteflies, restrains the formation and development of whitefly eggs, is not prone to drug resistance and is good in permeability, wettability and fast-acting property and suitable for broad application and promotion in insect pest prevention and controlling.

The invention discloses a preparation method of a drug composition for killing out prodenia litura. The method comprises the following steps of (1) preparing raw materials; (2) adding water for decocting hydnocarpus anthelmintica, semen cucurbitae and Sichuan pepper for twice, and obtaining a medicine liquor for standby use; (3) adding water for decocting herba swertiae davidi, inula flower, radixscrophulariae, semen euryales, obscured homalomena rhizome and bete pepper for twice, filtering, and concentrating a filter liquor until the relative density is 1.15; (4) merging the medicine liquors; (5) adjusting a pH value of the solution; (6) filtering, filling, and sterilizing to obtain the drug composition. The drug composition provided by the invention can be specifically used for killingout the prodenia litura, has good safety, good biodegradation, no pollution and pungent smell, no environmental toxicity, and no residue in animals, does not damage ecological balance, and has less influence on a crop growth environment; has better permeability and wettability, interferes nerve center systems of polypide, inhibits worm egg synthesis development, and is not easy to occur tolerance;has a good fast-acting property, and is suitable to be widely popularized and applied in pest control.