How to use pesticides scientifically and rationally to improve the level of pest control? Recently, Lei Shiming, an agronomist at the Agricultural Science Institute of Changde City, Hunan Province, gave a detailed answer to this question.
Biological control combined with chemical control
Biological control is the use of one organism to deal with another organism, which can be roughly divided into pest control, insect control and insect control. It utilizes the interrelationship between biological species to inhibit one or another species of organism by one or a class of organisms, and is a method of reducing the population density of pests such as weeds and pests. "The biggest advantage is that it does not pollute the environment, which is incomparable to non-biological methods such as pesticides." Lei Shiming said that due to the long-term use of chemical pesticides, some harmful insects have developed strong resistance. Their natural enemies have been killed in large numbers, causing pests to be very embarrassing, and the use of biological control of pests and diseases can greatly improve the control effect, and thus has a broad space for development. In Lei Shiming's view, strengthening the combination of biological control and chemical control can not only give full play to the advantages of low-toxicity and long-term biological control, but also make full use of chemical insecticides to quickly, efficiently, easily and eliminate pests. Effectively control large-scale occurrence of crop pests and achieve a good comprehensive control effect.
Promote low toxicity and high efficiency biological pesticides
With the rapid development of science and technology, the scope of biological pesticides has been expanding, involving many species of animals, plants, and microorganisms, as well as a variety of biologically related substances with pesticide functions, such as plant-derived substances, genetically modified anti-harmful crops, Biomimetic synthesis or modification of natural products, synthesis of compounds, antagonistic organisms of artificially propagated pests, pheromones, and the like. “In summary, bio-pesticides are mainly selective, safe for humans and animals; have little impact on the ecological environment; can induce pest epidemics; and can take advantage of the production and processing of agricultural and sideline products.†Lei Shiming said that a large number of introductions and promotion are low. The biological pesticides with high toxicity and high efficiency have great practical significance for preventing and controlling crop diseases, pests and diseases and improving the safety of agricultural products.
Promote the professional control of crops
The prevention and control of crop diseases, insects and grass pests in agricultural production is labor intensive, employs more, has higher technical content and higher operational risks. It is a difficult point in the process of achieving scale, standardization and industrialization of modern agricultural production.
In August last year, the state promulgated the "Administrative Measures for the Prevention and Control of Crop Pests and Diseases." "Specialized and unified defense not only conforms to the development direction of modern agriculture, but also adapts to the law of pest control. It has become an effective way to solve the problem of farmers' prevention and treatment of pests and reduce pesticide pollution, and has improved the level of agricultural socialization services and reduced pesticide pollution. The goal of scientific and rational use of pesticides can be achieved, effectively reducing the burden on farmers and improving the safety of agricultural products." Lei Shiming said.
Biological control combined with chemical control
Biological control is the use of one organism to deal with another organism, which can be roughly divided into pest control, insect control and insect control. It utilizes the interrelationship between biological species to inhibit one or another species of organism by one or a class of organisms, and is a method of reducing the population density of pests such as weeds and pests. "The biggest advantage is that it does not pollute the environment, which is incomparable to non-biological methods such as pesticides." Lei Shiming said that due to the long-term use of chemical pesticides, some harmful insects have developed strong resistance. Their natural enemies have been killed in large numbers, causing pests to be very embarrassing, and the use of biological control of pests and diseases can greatly improve the control effect, and thus has a broad space for development. In Lei Shiming's view, strengthening the combination of biological control and chemical control can not only give full play to the advantages of low-toxicity and long-term biological control, but also make full use of chemical insecticides to quickly, efficiently, easily and eliminate pests. Effectively control large-scale occurrence of crop pests and achieve a good comprehensive control effect.
Promote low toxicity and high efficiency biological pesticides
With the rapid development of science and technology, the scope of biological pesticides has been expanding, involving many species of animals, plants, and microorganisms, as well as a variety of biologically related substances with pesticide functions, such as plant-derived substances, genetically modified anti-harmful crops, Biomimetic synthesis or modification of natural products, synthesis of compounds, antagonistic organisms of artificially propagated pests, pheromones, and the like. “In summary, bio-pesticides are mainly selective, safe for humans and animals; have little impact on the ecological environment; can induce pest epidemics; and can take advantage of the production and processing of agricultural and sideline products.†Lei Shiming said that a large number of introductions and promotion are low. The biological pesticides with high toxicity and high efficiency have great practical significance for preventing and controlling crop diseases, pests and diseases and improving the safety of agricultural products.
Promote the professional control of crops
The prevention and control of crop diseases, insects and grass pests in agricultural production is labor intensive, employs more, has higher technical content and higher operational risks. It is a difficult point in the process of achieving scale, standardization and industrialization of modern agricultural production.
In August last year, the state promulgated the "Administrative Measures for the Prevention and Control of Crop Pests and Diseases." "Specialized and unified defense not only conforms to the development direction of modern agriculture, but also adapts to the law of pest control. It has become an effective way to solve the problem of farmers' prevention and treatment of pests and reduce pesticide pollution, and has improved the level of agricultural socialization services and reduced pesticide pollution. The goal of scientific and rational use of pesticides can be achieved, effectively reducing the burden on farmers and improving the safety of agricultural products." Lei Shiming said.
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