Biological pesticides are pesticides made from biological organisms, mainly microorganisms and their metabolites. Biological pesticides include biochemical pesticides and microbial pesticides. Biochemical pesticides must meet two conditions: no direct toxicity to the control object, but only special effects such as regulating growth, interfering with mating or attracting; must be natural compounds, if artificially synthesized, the structure must be the same as the natural compound to allow heterogeneity The difference in body proportions. These pesticides contain pheromones, hormones, natural plant growth regulators and insect growth regulators and enzymes. Some plant-derived pesticides such as alizarin, rotenone, nicotine, natural pyrethrins and Chinese herbal medicines should also be used as biological pesticides. Microbial pesticides include preparations for the control of diseases, insects, grasses, rats and other harmful organisms naturally produced by bacteria, fungi, viruses, etc., such as Bacillus thuringiensis, nuclear polyhedrosis virus, Jinggangmycin and the like.
Biological control refers to the use of beneficial organisms and their metabolites and gene products to control harmful organisms. The biological control of farmland pests includes the use of insects to control insects, the use of insects to control insects and other beneficial animals; the biological control of plant diseases mainly utilizes beneficial microorganisms, through the interaction between organisms, antibacterial action, heavy parasitic effects, cross protection and Inducing disease resistance, etc., to inhibit the survival and activity of certain pathogens. The concept of biological control in a broad sense also includes the application of insect hormones such as juvenile hormones, microbial pesticides such as BT emulsifiable concentrate, and antibacterial substances such as jinggangmycin and phytomycin, as well as improving the resistance of host plants to pests and diseases. Biological control has many characteristics superior to chemical control, such as safety for humans and animals, no pollution to the environment, no resistance, and because it only kills or inhibits the control objects, it can participate in the regulation of the ecological environment and maintain the ecological balance. Effect. The disadvantage is that the control effect is easily affected by environmental factors, the effect is not as fast as chemical control, the technical difficulty of artificial breeding and breeding of beneficial organisms is high, and there are few natural enemy insects that can be used for mass release, and the predation and parasitization of most natural enemies against pests. Selective, narrow range, etc. Biological control is an important part of the comprehensive management of pests, and it is a prevention and control measure that is worthy of promotion and has great development prospects.
Biological control refers to the use of beneficial organisms and their metabolites and gene products to control harmful organisms. The biological control of farmland pests includes the use of insects to control insects, the use of insects to control insects and other beneficial animals; the biological control of plant diseases mainly utilizes beneficial microorganisms, through the interaction between organisms, antibacterial action, heavy parasitic effects, cross protection and Inducing disease resistance, etc., to inhibit the survival and activity of certain pathogens. The concept of biological control in a broad sense also includes the application of insect hormones such as juvenile hormones, microbial pesticides such as BT emulsifiable concentrate, and antibacterial substances such as jinggangmycin and phytomycin, as well as improving the resistance of host plants to pests and diseases. Biological control has many characteristics superior to chemical control, such as safety for humans and animals, no pollution to the environment, no resistance, and because it only kills or inhibits the control objects, it can participate in the regulation of the ecological environment and maintain the ecological balance. Effect. The disadvantage is that the control effect is easily affected by environmental factors, the effect is not as fast as chemical control, the technical difficulty of artificial breeding and breeding of beneficial organisms is high, and there are few natural enemy insects that can be used for mass release, and the predation and parasitization of most natural enemies against pests. Selective, narrow range, etc. Biological control is an important part of the comprehensive management of pests, and it is a prevention and control measure that is worthy of promotion and has great development prospects.
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