69results about How to "Solve the problem of prevention and control" patented technology

The invention discloses a myopia treatment instrument through stereoscopic video stimulation and regulation, which consists of training equipment and effect evaluation equipment which are electrically connected with each other, wherein the training equipment comprises a stereoscopic display, a computer host and 3D video software; the stereoscopic display is connected with the computer host; the computer host is provided with the 3D video software; the effect evaluation equipment is connected with optometry regulation equipment; the 3D video software is provided with a plurality of different video training grades and comprises a 3D static image, a 3D motion image and a 3D video clip; the optometry regulation equipment is provided with regulation amplitude check and flexibility regulation check; the change of regulation force can be detected on the same equipment, and training can be continuously performed when the regulation force is increased; and when the regulation force is decreased, the 3D video training grade is required to be adjusted. The myopia is prevented by employing 3D video stimulation and regulation and transferring regulation storage.

The invention discloses an omnidirectional myopia prevention and treatment synthetic apparatus, comprising an omnidirectional and multi-angle prevention monitoring mechanism, a curing mechanism and a detection mechanism; a shell panel is provided with an acupuncture electrode eyepit (22) of a point instrument; the eyepit is internally provided with a red / green flashing device (25) of a split image sight enhancing instrument; one side of the eyepit is provided with an operation keyboard; the upper side of operation keyboard is provided with a loudspeaker (18), eye curing and comforting liquid (10) and a red / green indicator lamp (20) and the lower side thereof is provided with a frequency adjusting key (21) and an eye distance monitoring instrument probe (19); the panel is also provided with a pen insertion hole (16), a learning and curing synchronization lens (13) and a detection sight gauge rotation plate; a sparklet eye comforting card is arranged below the plate; the side surface of the shell is provided with a myopia prevention reinforcing frame; a drawer is internally provided with a pen holding corrector (7), a sitting position warning device and an electric control writing pen; the omnidirectional myopia prevention and treatment synthetic apparatus can omni-directionally prompt and help the youth in multi-angle to improve the external and keep good eye using habit, and has a certain effect on the prevention and treatment of the true myopia.

The invention provides a shrimp, rice and brassica rapa continuous cropping ecological circulatory farming new mode. The shrimp, rice and brassica rapa continuous cropping ecological circulatory farming new mode is characterized in that after finish of shrimp farming and shrimping in a rice field, one-season high-quality rice is planted in an organic planting mode, one-season brassica rapa is planted after harvesting of the rice, the sowing time of brassica rapa is well adjusted to ensure that brassica rapa mosses can be harvested for 1-2 times before water cray culture on parcels of the rice field in mid-March of the next year, residues left after harvesting of the brassica rapa mosses serve as cray feeds, and residues left after eating of crays serve as green manures. According to the shrimp, rice and brassica rapa continuous cropping ecological circulatory farming new mode, the resources of shrimp and rice farming and planting field parcels are fully utilized, the problem that by adoption of a common shrimp and rice farming and planting mode, the field parcels are idle for about three months from the time after rice harvesting to the time before water supply for the field parcels of the next year is solved, the field parcel resources are fully utilized and the multiple crop index is increased. The shrimp, rice and brassica rapa continuous cropping ecological circulatory farming new mode is high in benefit, low in production cost and high in field parcel utilization ratio, forms a virtuous ecological cycle, and is a green, environment-friendly and low-carbon rice and shrimp planting and farming new mode.

The invention discloses a natural gas hydrate preventing and controlling agent. The natural gas hydrate preventing and controlling agent comprises glycerol and / or a glycerol solution. The invention also discloses an application method of the natural gas hydrate preventing and controlling agent. The natural gas hydrate preventing and controlling agent can effectively solve the problem about inhibition or prevention and control of the natural gas hydrate when being applied to production as well as storage and transportation of the natural gas, can be used for exploiting the natural gas from the natural gas hydrate system or mineral resources, and also can be used for reducing the dew point of the natural gas and solving the problem that the natural gas flow channel is frozen and blocked; and the advantages and characteristics of easiness in implementation, wide application, easiness in popularization and the like are achieved.

The invention discloses an aid for preventing and controlling a natural gas hydrate. The aid comprises a prevention and control agent and / or aqueous solution of the prevention and control agent, wherein the prevention and control agent is any one or a mixture of two or more of urea, disilicate, thiourea, dehydrogenated acetate and lactate according to any proportion. The aid can be used for the production and transportation of natural gas to solve the restraining or prevention and control problem of the natural gas hydrate effectively, and can be used for exploiting the natural gas from a natural gas hydrate system or mineral resources and lowering the dew point of the natural gas and solve the problems of freezing and blocking of a natural gas flow channel. The aid has the advantages of easy implementation, safety, reliability, low cost, easy popularization and the like.

The invention discloses a device for efficiently separating beneficial and harmful insects. The device comprises an insect collecting box, a device base and an internal box, wherein the top of the insect collecting box is provided with a funnel-shaped insect inlet, the wall of the insect collecting box is encircled by a netlike object, and the wall of the internal box is also encircled by a netlike object; the internal box is fixed on the device base in the center of the insect collecting box; and the bottom of the insect collecting box is connected with the upper part of the device base, and a plurality of natural enemy escape holes are formed at the connected position. According to the device, the aims of killing pests and separating beneficial insects are fulfilled by the way that the pests are eaten by natural enemies of the pests, so that the survival rate of the beneficial insects is greatly improved; and eggs laid by lepidoptera insects provide hosts for the propagation of trichogramma, so that the cost of indoor bee propagation is reduced to a great degree. The natural enemy number of the pests in fields is remarkably increased, so that the number of the pests in the fields is effectively controlled, and the use of chemical agents is reduced and even eliminated; and the device is an indispensable professional insect attracting facility for the development of ecological agriculture.

The invention discloses a method for cultivating super rice accurately, lightly and simply. The method for cultivating the super rice accurately, lightly and simply is characterized by comprising the following steps: step 1, variety characteristics of the super rice are determined and specified as one of wide application type super rice, multi-spike type super rice and large-spike type super rice; step 2, a fertilization technology is determined according to the variety characteristics, determined in the step 1, of the super rice, the demands of different super rice varieties on different nutrient elements and the nutrient fertility condition of local soil; and step 3, a pesticide application technology is determined according to the variety characteristics, determined in the step 1, of the super rice and the incidence rates of the different super rice varieties to pests, weeds and diseases. According to the method for cultivating the super rice accurately, lightly and simply, only one-time fertilization and one-time pesticide application are needed in the whole growing process of the super rice according to the variety characteristics of the different hybrid super rice, the demands of the super rice on fertilizers and the key points of pest and disease prevention, the fertilization requirements of the super rice in the whole growing process can be met basically, the pest and disease prevention problem in the whole growing process can be solved, and therefore labor is saved, the yield is increased, and the method for cultivating the super rice accurately, lightly and simply is safe and environmental friendly.

The chelating state micronutrient fertilizer with the insecticidal function comprises trace elements and chelating agents and also comprises botanical pesticides and dispersion agents; the chelating state micronutrient fertilizer is shaped like powder; chelating agents are selected from tetrasodium iminodisuccinate salt and or EDTA (Ethylene Diamine Tetraacetic Acid); the botanical pesticides comprise Cynanchum komarovii Al. extracts and also comprise Stellera chamaejasme extracts and Ageratina adenophora extracts. According to the chelating state micronutrient fertilizer with the insecticidal function, the trace elements are added, trace elements and other nutrients brought by a plant source which serves as the pesticides are contained, the trace elements and the other nutrients can be chelated into the chelating state micronutrient fertilizer, the botanical pesticides are also contained, and accordingly the formula is reasonable, the synergistic effect is obvious, the utilization rate of effective components is high, the pest killing effect is good through due to the double insecticidal mechanism for damaging protective enzyme systems and nervous systems of nematodes and the fumigation action of multiple ingredients, and the botanical pesticides are free of pest resistance. The invention also relates to a production method of the chelating state micronutrient fertilizer with the insecticidal function.

The invention relates to an application of a tree peony bark extract to preparation of a medicament for treating depression, which can be used for effectively solving the problems of prevention and treatment of depression. According to the technical scheme for solving the problem, the tree peony bark extract is obtained by the following steps of: smashing a Chinese medicine, i.e., tree peony bark; and performing reflux extraction by using any solvent selected from water, 20-95 percent ethanol, acetone, ethyl acetate, petroleum or petroleum ether according to the conventional method. The extract prepared from the Chinese medicine, i.e., tree peony bark is used for preparing a medicament for treating depression. According to the application, the problems of prevention and treatment of depression are solved, and a novel application of the tree peony bark to prevention and treatment of depression is developed; and the application belongs to an innovation on Chinese medicine.

The invention discloses a neutral environment-friendly trunk whitewash agent and belongs to the technical field of trunk whitewash agents. The neutral environment-friendly trunk whitewash agent is prepared from the following raw materials in parts by weight: 0.1-99 parts of calcium powder, 0.1-20 parts of gelatine powder, 0.1-50 parts of an insecticide, 0.001-30 parts of bacillus and 1-10 parts of auxiliary materials. The invention also discloses a preparation method of the neutral environment-friendly trunk whitewash agent. By virtue of a series of production processing technologies, the neutral environment-friendly trunk whitewash agent is capable of not only solving the problem of poor adhesive force of trunk whitewash agents, but also realizing the prevention and control on diseases and pests; especially, the whitewash agent provided by the invention is the neutral environment-friendly trunk whitewash agent with a pH value of 7, is environmental-friendly and cause no influence on landscape plants in soils.

The invention provides a new ecological and cycling cropping-breeding mode for continuous cropping of crawfish, paddy rice and Chinese milk vetches. The mode is characterized in that after crawfish is finished catching in a rice field, one-season quality rice can be planted according to an organic planting mode; after harvesting of rice, one-season Chinese milk vetches are planted; by adjusting the sowing period of Chinese milk vetches, Chinese milk vetches can enter a flowering phase before crawfish seeds are cultured in water in parcels of the rice field the next year; at this time, Chinese milk vetches can be used as good nutrition diets for crawfish and the ornamental effect in the field is improved. The new ecological and cycling cropping-breeding mode for continuous cropping of crawfish, paddy rice and Chinese milk vetches has the following beneficial effects: resources of parcels in the field can be fully used; the multiple crop index is increased while culture cost is saved and content of organic matter in soil is improved; the cropping-breeding mode is high in benefit, low in production cost and high in utilization of parcels in the field; the ecological benign cycle is formed; and the green, eco-friendly and low-carbon cropping-breeding mode for crawfish in the field is formed.

The invention discloses a new method for controlling mulberry pests. In the technical scheme, the method comprises the following steps of: mixing 2 percent bitter general ginseng alkali and water in a volume ratio of 1:(600-2,500), spraying 45 and 55 kilograms of the mixture to leaf surfaces of mulberry in each 667 square meters of soil, and after applying for 4 hours to 5 days, picking leaves normally to feed silkworm. A pesticide prepared by the method is easy to prepare, wide in source of raw materials, low in price, non-toxic to human and livestock, pollution-free and convenient to use, and can be sprayed on the leaf surfaces of the mulberry directly, residues are avoided, mulberry leaves can be picked to be fed to the silkworm after several hours, and the mulberry leaves which are sprayed by the pesticide diluted by 2,000 times can be picked after 4 hours to be fed to the silkworm. Experiments indicate that the control effect on mulberry looper, euproctis similis, white tiger moth, large dagger moth, ascotis selenara dlanera hubner, pseudodendrothrips mori and red spider is 90 percent, and the control effect on mulberry pyralid moths and wild silkworm is poor (only 10 percent). The method is popularized and applied to about 3 hectares of mulberry fields in the Teyong town of Sheyang county and the Xinfeng town of Dafeng city of Jiangsu province, and the satisfied control effect is achieved.

The invention discloses a preparation method and applications of secondary metabolites with the antibacterial and / or antioxidant activity of casuarina equisetifolia endophytic fungi. The method comprises the following steps: (1) separating endophytic fungi from casuarina equisetifolia by adopting a tissue block separating method; (2) fermenting the separated endophytic fungi in a rice solid medium; (3) after fermentation is finished, carrying out cold soaking extraction on the fermentation product by adopting a mixed solution of ethyl acetate and acetone, and carrying out concentration under reduced pressure on the extracted solution, thus obtaining the secondary metabolites of the casuarina equisetifolia endophytic fungi; and (4) screening the secondary metabolites with the antibacterialand / or antioxidant activity by adopting the thin layer chromatography-bioautography method. According to the method, the secondary metabolites with the antibacterial and / or antioxidant activity can beobtained from the casuarina equisetifolia endophytic fungi, and meanwhile, the secondary metabolites capable of resisting pseudomonas solanacearum of casuarina equisetifolia are obtained, so that thebacterial wilt of casuarina equisetifolia can be prevented and treated.

The embodiment of the invention discloses an insect type identification device, system and method. The device comprises an artificial intelligence AI calculation unit, a camera module, a communicationmodule and a pest control device, the camera module is used for shooting an image containing insects. The AI calculation unit is used for carrying out edge detection and positioning on insects in theimages to obtain insect images, segmenting background images in the images and the insect images, segmenting at least two types of insect images, and extracting morphological features and color features of the insects from the segmented images; comparing the insect features with pre-stored insect features, and sending a comparison result to a cloud server through a communication module, so that the cloud server sends a pest alarm signal based on the comparison result to warn a worker. The pest control device is used for controlling pests according to comparison results. The device can identify insect species in time, facilitates mastering of crop conditions, can prevent and control plant diseases and insect pests, and saves manpower.

The invention belongs to the field of medical care, specifically relates to a biologic negative electrical meridian points health protection treatment method and system. The system device comprises a biologic negative electricity generator, a negative electricity conveyer, a meridian potential combing apparatus, and a point potential kneading apparatus. The health protection treatment method comprises generating biologic negatron of 70KHz with the biologic negative electricity generator, transporting to patients by the negative electricity conveyer, kneading and carding important meridian points such as head, neck, chest, abdomen back, and non-fixed point with the meridian potential kneading apparatus to activate cells, supply cell membrane potential for aggrandizing organ gammadecay to health level, thus repairing gammadecayed cell and organ function, balancing physiology, and eliminating sub-health or disease.

The invention discloses a plant seed development inhibitor for control over weeds and application thereof. The plant seed development inhibitor is prepared from a plant growth regulator and water; the main ingredient of the plant growth regulator is glyphosate. The plant seed development inhibitor is further prepared from at least one of nutritional ingredients and an adhesive; preferably, the plant seed development inhibitor is further prepared from nutritional ingredients and an adhesive. The plant seed development inhibitor inhibits flower bud differentiation and seed formation to eradicate seed generation and spreading, and the technology for control over weeds is realized. The screened-out plant seed development inhibitor is low in use concentration and safe to the environment. At present, no report about research on Eupatorium adenophora seed inhibitors exists at home and abroad, and research on the aspect will provide a new way for preventing invasion of the weed and controlling the weed.

The invention discloses an herbicide for paddy fields. The herbicide consists of active ingredients A, B and C as well as appropriate pesticide adjuvants, wherein the active ingredient A is pyrazosulfuron-ethyl, the ingredient B is oxyfluorfen, and the ingredient C is one of mesotrione and oxadiargyl; and the ratio of the active ingredients A to B to C in the herbicide is (1-20) to (1-20) to (1-20) in parts by weight. The herbicide disclosed by the invention can be prepared as one of a suspending agent, wettable powder or granules, and the herbicide can be used for preventing and controlling annual weeds in the paddy transplanting fields.

A green control method for plant diseases and insect pests in annual cabbage and kale production is characterized in that the method includes the steps of healthy cultivation, physical control, agricultural control, biological control and auxiliary chemical control. With the use of green and friendly-environment control method, the green control method for the plant diseases and insect pests in the annual cabbage and kale production is capable of effectively solving control problems of the plant diseases and insect pests in the annual cabbage and kale production, greatly reducing the use of chemical pesticides at the same time and protecting ecological environment and safety of human and animals. The frequency of the use of the pesticides is reduced by over 50 percent, prevention and control effect for the plant diseases and insect pests increases by 90 percent. Furthermore, cabbage and kale are good in marketability and sweet in taste, and economic, social and ecological benefits are significant.

The invention discloses a multi-effect liquid surface fertilizer for petasites palmata. The multi-effect liquid surface fertilizer comprises the following components in content: 5g / L of urea, 3g / L of iron nitrate, 1g / L of zinc nitrate, 3g / L of ammonium phosphate, 0.5g / L of a surfactant, 0.5g / L of biochemical humic acid and 0.05g / L of a pH stabilizer, as well as plant ash and a trichoderma fungicide. Compared with the prior art, the multi-effect liquid surface fertilizer disclosed by the invention has the following advantages: the nutrients can be rapidly supplemented in a rapid growth period of the petasites palmata, the fast growth of plants is ensured, and the treatment problem of wastes in rural agricultural production is effectively solved, thereby being economical and environment-friendly and solving the problems that the petasites palmata is afraid of water and water stains; and furthermore, through the scheme of adding the plant ash and the trichoderma fungicide, major elements are supplemented, the problem of preventing and treating plant diseases and insect pests is solved, and the labor intensity in field management is greatly reduced.

The invention relates to a novel efficient desulfurization and denitrification agent. The novel efficient desulfurization and denitrification agent is prepared by taking solid waste slag as a main material and taking calcium hypochlorite as an auxiliary material, wherein the solid waste slag contains a certain quantity of iron and calcium playing an important role in desulfurization and denitrification of flue gas, and through determination, the content of average effective calcium in the waste slag is 20%, the content of average effective iron is 8.6%, the content of Fe<2+> is 5.8%, and the content of Fe<3+> is 2.6%. The novel efficient desulfurization and denitrification agent takes calcium hypochlorite as the auxiliary material and takes Ca(ClO)2 as an absorption medium for desulfurization and denitrification reaction, thereby having the following two advantages: (1) ClO- has very strong oxidizing property so as to be favorable for oxidizing SO2 and NO dissolved in water to SO4<2-> and NO3<-> which are in highest valence states respectively, and removing together; (2) a large amount of Ca<2+> exists in a reaction system, and the dissolution of slightly soluble CaSO4 is inhibited so as to be favorable for producing a solid precipitate and further promoting the movement of balance of the desulfurization and denitrification reaction to the positive direction. The novel efficient desulfurization and denitrification agent can effectively remove sulfur and nitrates in the flue gas, and fully utilize the solid waste slag so as to reduce the serious harm to the water and soil; simultaneously, the novel efficient desulfurization and denitrification agent can be fully utilized to perform desulfurization and denitrification on the flue gas so as to achieve the effects of purifying and protecting the environment.

The invention relates to a throat tablet for moisturizing and removing heat, which aims to prevent and treat throat diseases. The throat tablet adopts the technical scheme that the throat tablet is prepared by the following components by weight: figwort of 230 to 250 g, burdock of 150 to 170 g, Chinese white olive of 150 to 170 g, balloon flower root of 150 to 170 g, red peony root of 150 to 170 g, kudzuvine root of 150 to 170 g, dried rehmannia root of 70 to 90 g, momordica grosvenori of 220 to 260 g and liquorice of 110 to 130. The preparing method of the throat tablet comprises the following steps: mixing the components together, adding 8 to 10 times of water weighter than total mendicant weight each time and boiling for 1.5 to 2 hours per time for two times, merging boiling solution obtained at two times, filtering, depressing and concentrating filtrate to 60 DEG C, determining cream with the relative density of 1.23 to 1.25; vacuumizing and drying at the vacuum degree of 0.06 to 0.08 Mpa and the temperature of 70 to 80 DEG C, and comminuting into fine powder; and finally pressing into the tablet. The invention has the advantages of scientific prescription compatibility, reasonable dosage, easy taking, low cost and good effect, is the innovation in the medicament of preventing and treating throat diseases, and has remarkable economic and social benefit.

The invention relates to a cultivation method for preventing leaf spot disease of atractylodes macrocephala koidz. The cultivation method is characterized by comprising a step A of performing agricultural control: a step a of selecting a disease-resistant variety; a step b of reasonably selecting a site; a step c of performing ridging and cultivation; a step d of scientifically applying fertilizers; a step e of performing rational rotation; and a step B of performing chemical control: by organically combining the agricultural control and high-efficiency and low-toxicity low-residual chemical gent control, effectively controlling diseases of atractylodes macrocephala koidz and guaranteeing atractylodes macrocephala koidz medicine quality. The occurrence rate of leaf spot disease of atractylodes macrocephala koidz is controlled within 12%, a control effect can reach 89%, growth and rhizome weight increase of atractylodes macrocephala koidz can be promoted, the yield can be increased by 25.3% compared with the yield of a contrast phase, about 800 yuan can be increased each mu every year for atractylodes macrocephala koidz growers, and the method is favorable for long-term stable development and further expansion of the atractylodes macrocephala koidz industry.

The invention relates to application of fiveleaf gynostemma herb suspension and extract to preparation of a drug for treating and resisting depression, wherein the problem on preventing and treating depression can be effectively solved. A technical scheme for solving the problem comprises the steps of: smashing Chinese medicinal fiveleaf gynostemma herb and adding water to prepare the suspension with a concentration equal to that the crude drug content is 1g / mL, or smashing the Chinese medicinal fiveleaf gynostemma herb and carrying out reflux extraction by utilizing one of water, 50%-95% ethanol, acetone, ethyl acetate and gasoline or petroleum ether according to a conventional method to prepare the extract. In the invention, the suspension or the extract made from the Chinese medicinal fiveleaf gynostemma herb is used for preparing the drug for treating and resisting the depression; and therefore, the problem on preventing and treating the depression is solved and the novel application of the fiveleaf gynostemma herb to prevention and treatment of the depression is opened up and is a great innovation in the traditional Chinese medicine.

The invention relates to a liquid for preventing and treating Newcastle disease and avian influenza, which can effectively solve the problems of preventing and treating Newcastle disease and avian influenza; the technical proposal of the solution is that the invention is prepared by the egg which is hatched for 5 to 6 days and water, wherein, 100 to 150g of the egg which is hatched for 5 to 6 days is broken into pieces, the water is added to 800 to 1200ml, and hydrolysis is carried out for 24 to 30 hours at a temperature of 43 to 53 DEG C; the invention has simple method, rich raw materials and good effects on prevention and treatment; the survival rate of chicken can achieve more than 95 percent, the cost can be reduced by more than 80 percent, so the invention is a great creation on preventing and treating Newcastle disease and avian influenza and has unprecedented huge economic and social benefits.

The invention relates to a throat tablet for moisturizing and removing heat, which aims to prevent and treat throat diseases. The throat tablet adopts the technical scheme that the throat tablet is prepared by the following components by weight: figwort of 230 to 250 g, burdock of 150 to 170 g, Chinese white olive of 150 to 170 g, balloon flower root of 150 to 170 g, red peony root of 150 to 170 g, kudzuvine root of 150 to 170 g, dried rehmannia root of 70 to 90 g, momordica grosvenori of 220 to 260 g and liquorice of 110 to 130. The preparing method of the throat tablet comprises the following steps: mixing the components together, adding 8 to 10 times of water weighter than total mendicant weight each time and boiling for 1.5 to 2 hours per time for two times, merging boiling solution obtained at two times, filtering, depressing and concentrating filtrate to 60 DEG C, determining cream with the relative density of 1.23 to 1.25; vacuumizing and drying at the vacuum degree of 0.06 to 0.08 Mpa and the temperature of 70 to 80 DEG C, and comminuting into fine powder; and finally pressing into the tablet. The invention has the advantages of scientific prescription compatibility, reasonable dosage, easy taking, low cost and good effect, is the innovation in the medicament of preventing and treating throat diseases, and has remarkable economic and social benefit.

The invention discloses compound pesticide for preventing strong drug-resistant mulberry moth, and is prepared with 80 percent of dichlovos, 50 percent of phoxim, surfactant and water in the weight proportions of 1:0.8-1.2:0.8-1.2:1500-2500. The compound pesticide can be sprayed on the surface of mulberry leaves for 45-55 kg per 667 square meters (mu), and the mulberry leaves can be picked off for feeding silkworms in 5-7 days after the spray. The invention and another technical proposal that the compound pesticide is prepared into with 40 percent of methomyl, 50 percent of phoxim, surfactant and water in the weight proportion of 1:0.8-1.2:0.8-1.2:1500-2500. Thus the compound pesticide can be sprayed on the surface of the mulberry leaves for 45-55 kg per 667 square meters (mu), and the mulberry leaves can be picked off for feeding silkworms in 10-12 days after the spray. The invention has simple preparation, broad material source, low price, low toxicity, low residual, no pollution, and convenient usage; can be sprayed on the surface of the mulberry leaves, and the leaves can be picked off for feeding silkworms after a plurality of days. Experiments prove that the preventing effect of the invention can reach above 95 percent, and satisfied prevention effects are obtained after the invention is applied to about 30 hectare mulberry gardens.

The invention discloses a complex pesticide for preventing and controlling drug-resistant prodenia litura fabricius. The technical scheme is that: the weight ratio of 480ml / L chlorpyrifos, 50 percent phoxim, a synergist and water is 1:0.8-1.2:0.8-1.2:1,500-4,500; the complex pesticide in an amount which is 45-55kg is applied to leaves of cotton per 667 square meters; and the safety interval for human beings, animals and silkworms is 12 days. The complex pesticide has the advantages of easiness in preparation, wide raw material source, low price, low toxicity, low residue, no pollution and convenience in use, and can be directly sprayed to the leaves of the cotton. As shown by experiments, the prevention and control effect of the complex pesticide reaches 95 percent; and the complex pesticide is popularized and applied to about 10 hectares of cotton fields in yandong town of tinghu district of yancheng city, teyong town of sheyang county and the like, and satisfactory prevent and control effect is achieved.

The invention relates to a method for extracting active substances from natural plants. By adoption of the method, the problem of tumor treatment can be effectively solved. The method adopting the technical scheme comprises the following steps: (1) crushing and extracting materials; (2) carrying out flash evaporation and concentration; (3) decoloring and removing impurities; (4) preparing a diethyl-ether extraction part; (5) preparing an ethyl-acetate extraction part; (6) preparing a normal-butanol extraction part; and (7) preparing the active substance. The method has the advantages that the active substances extracted from zanthoxylum avicennae and are used for preparing a medicine for treating the tumor, so that the problem of prevention and treatment of the tumor is solved, a new purpose of the zanthoxylum avicennae for treating the tumor is opened up and a great innovation is realized on the traditional Chinese medicine.