What is the effect of chitin pesticides?

What is the effect of chitin pesticides? What are the benefits of chitin pesticides? Which crops can be used for chitin pesticides? Please introduce the function of chitin pesticide as follows: (1) the function of ⑴ medium for improving soil ecological environment: chitin is the nutrient source and health product of soil beneficial microorganism, it is a good medium for soil beneficial microorganism, and it has good recognition function to soil microbial flora. After the test, the root was irrigated once and determined after 15 days. Beneficial bacteria: fiber decomposing bacteria, autogenic nitrogen-fixing bacteria, lactic acid bacteria increased 10 times, actinomycetes increased 30 times. Harmful bacteria: the common mold is 1max 10 of the control, and other filamentous fungi are 1max 15 of the control. The comprehensive effect of ⑵ beneficial microorganisms: antibiotics secreted by actinomycetes can inhibit the growth of harmful bacteria (Pythium, Rhizoctonia, Fusarium oxysporum, Phytophthora, etc.). Cellulose decomposing bacteria can accelerate the mineralization and decomposition rate of organic matter (organic fertilizer, straw, etc.) in soil, decompose into nitrogen, phosphorus, potassium, trace elements and form fulvic acid, fulvic acid and other organic substances, which provide sufficient nutrition for plant growth; autogenic nitrogen-fixing bacteria can fix nitrogen in the air, improve the level of nitrogen in soil, and reduce the use of nitrogen fertilizer. ⑶ to improve soil: the multiplication of microorganisms can promote the formation of soil aggregate structure, improve soil physical and chemical properties, enhance air permeability and the ability of water and fertilizer conservation, so as to provide a good soil micro-ecological environment for roots, make a variety of nutrients in the soil in an effective activation state, improve nutrient use efficiency and reduce the amount of chemical fertilizer. ⑷ chelating trace elements: chitin contains-NH2 (amino) in its molecular structure, which can chelate with trace elements such as iron, copper, manganese, zinc and molybdenum, which can increase the available nutrients of trace elements in fertilizer and release trace elements fixed by soil for absorption and utilization of crops, thus improving fertilizer efficiency. (2) overall regulation of plants and activation of cells ⑴ induces disease resistance and stress resistance: chitin induces structural disease resistance of plants, such as thickening or Lignification of plant cell walls It can rapidly activate cells and induce plants to produce a variety of resistant substances in a short time, such as phenylalanine ammonia-lyase (PAL), superoxide dismutase (SOD), peroxidase (PO), polyphenol oxidase (PPO), phytoprotease, etc., and disease-related proteins such as chitinase and β-1d3-glucanase, etc.; induce a series of plant defense responses to improve plant disease resistance and resistance to adverse environmental conditions. The effect of ⑵ on cell activation induces the overall regulation of endogenous hormones: spraying on plant leaves has the effect of air permeability and water conservation; spraying on leaves or soil can promote root cell division, make root system developed, enhance plant drought resistance and lodging resistance, shorten and sturdy stem nodes, leaves are dark green and moist, significantly improve photosynthesis and promote directional transport of photosynthate. The effect of chitin pesticides chitin has broad-spectrum antibacterial properties. Studies have shown that chitin has a good inhibitory effect on most genera of Gram-negative bacteria and Gram-positive bacteria. Chitin induces crops to produce a variety of resistant substances, which are effective in the control of diseases caused by viruses, fungi, bacteria and so on. What is particularly important is that the prevention and control of viral diseases used to be a difficult problem in plant protection, but the control effect of chitin pesticides is very ideal. The best effect can be obtained when chitin pesticides are used before crop disease. The application of chitin can prevent and directly control crop diseases such as anthrax, blight, wilt and root rot. When plants encounter a variety of other diseases seriously, it can be compatible with external inhibition pesticides (reduction), internal and external inhibition, synergistic effect, in most cases can also achieve satisfactory results. The study found that the application of cotton can reduce the number of bacteria in the soil, and has a lasting effect. Wheat seeds treated with chitin can inhibit the occurrence of wheat sheath blight, and spraying or injecting chitosan on the leaves of many plants (legumes, tobacco, etc.) can protect plants from virus infection. Before sowing, the mixed powder with chitin as the main component could increase the resistance of rice to toxin by 30-40 times and the yield by 13-23%. Tomato seedling seed soaking or spraying chitosan or adding chitosan to the growth medium can induce tomato resistance to root rot. The quenching disease caused by Pythium can be controlled by adding chitosan to cucumber aqueous solution. Crops that often use chitin are also less likely to suffer from insect pests. Chitin pesticides have the best effect when insects just hatch into larvae. Chitin had obvious contact killing effect on all kinds of aphids, and the aphids died 4-12 hours after contact with the drug. MG0N0, Maryland, USA is using chitin to produce a new type of organic pesticide for killing nematodes, which can kill nematodes. The pesticide has no residue, has little impact on natural enemies, and can effectively protect the environment and maintain ecological balance. The application of chitin, lime nitrogen and other medicinal fertilizers in Beijing soil fertilizer workstation greatly reduced the amount of chemical pesticides, had a good control effect on nematode diseases, and improved the composition of rhizosphere microecological flora. Continuous application of chemical fertilizer to control nematode diseases can reduce the incidence by 40% in the first year, increase the yield by 45%, and improve the quality significantly; in the second year, the incidence can be reduced by 60%, the yield can be increased by 32%, and the microbial flora can be significantly improved. Chitin can be used as a drug sustained-release agent to prolong the drug action time and reduce drug dosage, and can also form a semi-permeable membrane on the plant surface to prevent the invasion of pests. Therefore, chitin and its derivatives can be used as seed treatment agents for grain and vegetable crops to stimulate seed germination in advance, promote crop growth and improve disease resistance, thus increasing crop yield. As a seed treatment agent, chitin has the advantages of low dosage, low cost and no toxic side effects. Chitin and its derivatives and other substances can be used as soil improvers by making use of the antibacterial ability of chitin and the effect of improving soil. Chitin can greatly promote the proliferation of beneficial bacteria such as nitrogen-fixing bacteria, fiber decomposing bacteria, lactic acid bacteria and actinomycetes, and inhibit the growth of harmful bacteria such as mold and filamentous bacteria. It can increase the number of actinomycetes by nearly 30 times, and chitin can be biodegraded and transformed into high-quality organic fertilizer for absorption and utilization by crops. at the same time, it can effectively improve soil aggregate structure, effectively improve soil and improve the living environment of crops. it is a multi-functional soil improver. Chitin forms a film on the surface of the plant, which can block the invasion of bacteria, and this film has a good moisturizing effect and selective air permeability. These characteristics determine that chitin can be the best raw material for fruit and vegetable antistaling agent. At present, the most widely used is the preservation of fruits and vegetables. Studies on kiwifruit, apple, green pepper, pear, tomato, cucumber, citrus, mango and strawberry found that this method can delay fruit senescence, reduce decay and prolong storage period to a certain extent. Although the fresh-keeping effect of chitin is not as good as that of traditional storage methods such as controlled atmosphere and cold storage, it is convenient, cheap, non-toxic and harmless, so it has a lot of application space as an auxiliary storage method. The application of chitin can also improve the stress resistance of crops, such as cold resistance, high temperature resistance, drought and waterlogging resistance, saline-alkali resistance, fertilizer resistance, air damage, nutrition imbalance and so on. For example, among the various resistance substances produced by crops induced by chitin, some of them can prevent, reduce or repair the damage of stress to plant cells; they can promote the growth of crops, and robust plants naturally have strong stress resistance. The yield-increasing effect of chitin on crops is also very prominent, because chitin can activate and enhance the physiological and biochemical mechanism of plants, promote the development of roots and strong stems and leaves, and enhance the ability of plants to absorb and utilize water and fertilizer as well as photosynthesis. The treatment of grain seeds with chitin can increase the yield by 5% to 15%, and when used in sprinkler irrigation of fruits and vegetables, the yield can be increased by 20%, 40% or more. It can improve crop quality, such as increasing the content of protein and gluten in grain and the content of sugar in fruits and vegetables. Thus it can be seen that chitin and its derivatives can be used as growth regulators, feed additives, seed treatment agents, fresh-keeping agents for agricultural products, pesticide carriers, sustained-release agents, resistance inducers, food additives and many other aspects. and it has a broad application prospect because of its non-toxic, harmless, pollution-free and safe degradation. Diseases that can be controlled by chitin pesticides: wheat, scab, powdery mildew, rust; barley, sheath blight, powdery mildew; rice, rice blast, evil seedling disease, bacterial blight; soybean, Sclerotinia sclerotiorum, leaf spot; rape, Sclerotinia sclerotiorum, anthracnose; tobacco, Fusarium wilt, anthracnose, Sclerotinia sclerotiorum, frog eye; cotton, rot, anthracnose, Fusarium wilt, root rot Peanut, anthracnose, white silk disease; kidney bean (kidney bean), brown spot, powdery mildew, anthracnose, rust; watermelon, Fusarium root rot, Rhizoctonia sclerotiorum, leaf blight, powdery mildew, sclerotia; cucumber, downy mildew, powdery mildew, wilt, powdery mildew, leaf spot Tomato, brown root rot, black spot root rot, acid rot, red powder, spot, coal fouling, powdery mildew, Penicillium fruit rot, black thorn anthracnose; eggplant, brown spot, fruit rot, Verticillium wilt, red spot, spot blight, brown ring, coal spot, black spot root rot, sweet pepper, pepper, seedling gray mold, root rot, Verticillium wilt, white silk, etc. Click to get more fungicide use technology click to get more pesticide use technology