2018年4月18日星期三

The three major types of biological pesticides

Biopesticides means the use of living organisms (fungi, bacteria, insect viruses, genetically modified organisms, natural enemies, etc.) or their metabolites (pheromones, auxins, naphthaleneacetic acid, 2,4-D, etc.) to kill agricultural pests or Inhibitory preparations. Mainly include: plant-derived pesticides, animal-derived pesticides and microbial pesticides.

Botanical pesticides

Plant-based pesticides have become one of the first choices of green biological pesticides due to their advantages of being easily degradable and pollution-free in the natural environment. They mainly include plant-derived pesticides, plant-derived fungicides, plant-based herbicides, and plant photo-activated moldy viruses. . At present, the botanical insecticides that have been discovered by nature in the field of pesticide activity include the Boluohui insecticidal series, pyrethrins, nicotine, and rotenone produced by Yanglin.

Animal-derived pesticides

Animal-derived pesticides mainly include animal toxins such as spider toxins, wasp toxins, and nereis. At present, insect virus insecticides have been widely used in the United States, Britain, France, Russia, Japan, and India, and there are more than 40 kinds of insect virus insecticides registered, produced and applied in the world.

Microbial pesticides

Microbial source pesticides use microorganisms or their metabolites as biological agents for controlling agricultural harmful substances. Among them, Bacillus thuringiensis belongs to the genus Bacillus, and is the world's most widely used, longest-developed, most productive, and most successful biopesticide. Insect-pathogenic fungi are fungal pesticides against pine caterpillars and rice black tails. Leaf diseases have special effects; According to the chemical structure of the fungal pesticide cocloperin, the synthetic insecticides such as Bataan or Shandandan are widely used in actual production.

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