[principle of microbial insecticidal] in other microorganisms, antibiotics, the metabolites of microorganisms, are generally used instead of directly using their living bodies as pesticides. When spores enter the digestive tract of pests, the toxin is activated, paralyzing the pests and killing them. Microbial pesticides are made from living microorganisms. In nature, there are many microorganisms that have pathogenic effects on pests. Using this pathogenicity to control pests is an effective biological control method. From these pathogenic microorganisms, strains with convenient application, stable efficacy and safety to humans, animals and the environment were screened out for industrial scale production and development, so as to make microbial pesticides. [advantages of microbial insecticidal] (1) it is harmless to vertebrates and humans, and has strong specificity. Pest pathogens have strong selectivity to the host. Therefore, microbial pesticides have the characteristics of being safe and harmless to organisms other than human and livestock control targets (non target organisms). For example, a large number of facts have proved that Bacillus thuringiensis preparations are completely safe for fish, poultry, mammals and humans. (2) Insects with the ability of natural transmission of infection are the most suitable medium for all kinds of insect pathogens, especially for some infectious pathogens, and even irreplaceable medium. Insect pathogens can add value in the insect body after use, producing infectious propagules such as spores and viral polyhedra. These propagules can naturally spread in the insect community to infect other healthy insects and cause epidemics, Especially when the population density is high, it spreads faster, which can play a role in long-term control. Although the short-term control effect of some pathogenic microorganisms is poor, once they settle in a certain ecological environment, they can cause insect disease and death under appropriate environmental conditions, and become a natural factor that often inhibits the population. This is a characteristic that no chemical insecticide has. (3) Pests are not easy to develop drug resistance. Chemical pesticides have been constantly updated since they were used, but the resistance of pests has soared. So far, there is no definite evidence to prove that insects can develop resistance to microbial pesticides. After synthesizing a large number of research materials on the resistance of pests to various pathogenic microorganisms, people believe that insecticidal microorganisms and pests adapt to the defense system of pests in the long-term common life process. Although pests will have certain resistance to the repeated infection of microorganisms for a long time, the growth of this resistance is extremely slow, In other words, the immunity of pests to some pathogenic microorganisms has remained at a very low level for many years. (4) Microbial insecticides that can protect natural enemies of pests have strong selectivity and can act on pests and natural enemies of pests differently. They can kill pests and do no harm to natural enemies. It keeps the restriction of natural enemies on pests, and makes the ecological balance develop in favor of natural enemies. (5) It is easy to produce. Many insect pathogenic microorganisms can be industrialized. Many species can also be produced by simple solid fermentation without special equipment conditions. (6) The effective components contained in commonly used microbial pesticides that do not pollute the environment are not toxic or pathogenic to plants, vertebrates and humans, so microbial pesticides will not pollute the environment, which can be said to be a kind of environmental protection biological pesticides. [package specification] & nbsp; The bacterial content is 100billion / g, and the price is 200 yuan / kg. The dosage of single tank is 10-50g / time. [effective date] 2 years [storage method] sealed in a cool and dry place
