Bio-pesticide has always been loved by people for its green safety. Compared with chemical pesticides, bio- pesticide has many essential differences in its active ingredient source, industrial production route, product insecticidal disease prevention mechanism and mode of action. The following small series will introduce the advantages of bio-pesticides. First, strong selectivity, safety for humans and animals At present, the market develops and applies a wide range of successful bio-pesticide products, which only have effects on pests and diseases, generally for humans, animals and various beneficial organisms (including natural enemies of animals, natural enemies of insects, bees, pollinators, aquatic organisms such as fish and shrimp). It is safer and has less impact on non-target organisms. Second, the impact on the ecological environment is small The role of biological pesticides in controlling harmful organisms is mainly to use the insecticidal, disease-preventing and growth-promoting functions of certain special microorganisms or metabolites of microorganisms. Its effective active ingredients are completely present and derived from natural ecosystems. Its greatest feature is that it is easily decomposed by sunlight, plants or various soil microorganisms. It is a kind of material circulation that comes from nature and belongs to nature. Therefore, they can be considered safe and pollution-free to the natural ecological environment. Third, can induce pest epidemics Some biological pesticide varieties (insect pathogenic fungi, insect viruses, insect microsporidia, entomopathogenic nematodes, etc.) have the ability to spread horizontally or vertically through the eggs in the pest population, and have colonization and spread under certain conditions in the field. And the ability to develop fashion. It can not only exert control over the pests of the contemporary era, but also inhibit the harmful populations of future generations or leap years, with obvious aftereffects. Fourth, the use of agricultural and sideline products production and processing At present, domestic production and processing of biological pesticides generally use natural renewable resources (such as corn, bean cake, fishmeal, wheat bran or some plant body of agricultural and sideline products). The sources of raw materials are very extensive and the production cost is relatively low. Therefore, the production of biological pesticides generally does not create conflicts with the use of non-renewable resources (such as oil, coal, natural gas, etc.) to produce chemical synthetic products for raw materials, and is conducive to the protection and permanent use of human natural resources. Fifth, the production equipment has good versatility The industrial production of biological pesticides generally uses liquid deep-layer fermentation. The equipment used is general-purpose equipment, which generally includes: seed tanks, fermenters, concentration, filtration systems, separation and extraction of active ingredients, and drying equipment. Such equipment generally meets the requirements for large-scale industrial production of different microbial or microbial metabolites. The diversification of equipment uses is conducive to the development of bio-pesticide or other agricultural microbial products in series according to market demand changes. Sixth, the technical potential of product improvement is great For traditional bio- pesticide products , conventional techniques, genetic engineering techniques and microbial fermentation engineering techniques can be used to improve the production performance of the strain; optimize the fermentation process; increase the fermentation level of effective bioactive components per unit volume; shorten the fermentation production cycle; and reduce the consumption of raw materials; Reduce the cost of production and use; improve product performance and improve the stability, quickness and effectiveness of control effects. There are many ways to improve the technology and the development potential is huge. Seven, development investment risk is relatively small According to foreign research and analysis, the probability of successful development of new foreign chemical pesticides has been reduced from 1/5000 in the past to 1/20,000-1/80000. In terms of research funding, the development of a biological pesticide requires about 2 million to 4 million US dollars, and the development of a new chemical pesticide requires an investment of 40 million to 80 million US dollars. The ratio of funding is about 1/20. Among them, the registration fee for the product in the development cost is about 1:100, and the product development cycle ratio of the two is about 1/2-1/3. The market risk of investing in biopesticide development is relatively small. Moreover, the use of natural microbial resources is generally difficult to control by technical patent regulations. It can be inspired by the vast amount of research work of the predecessors, and later, it can often save manpower and material resources and shorten the research and development cycle of products. 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