Going out of the misunderstanding of bio-pesticides
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Guo Yuyuan, academician of the Chinese Academy of Engineering and director of the State Key Laboratory for Biology of Plant Diseases and Insect Pests, said that the fight between humans and crops is a long-term one. For example, the invasive alien species “pinewood nematode” has now fallen to Zijin Mountain in Nanjing and Huangshan Mountain in Anhui. And other places. So far, there is still no good solution. To this end, long-term early warning, well-informed information, timely disposition, mastery of laws, and implementation of strategies for sustainable development and plant protection must be implemented. At present, people have to come up with a misunderstanding. Do not always think that biological pesticides are the safest, and when they mention chemical pesticides, they think that they should be eliminated. Biological pesticides are relatively safe, generally have slow effects, ineffective effects, incomplete prevention and control, and short validity periods. They cannot effectively control the occurrence of pests and diseases on large areas. As to the causes of the negative effects of chemical pesticides, he analyzed that the reasons for this are caused by the unscientific use of chemical pesticides. Currently, there are misuses and abuses of chemical pesticides, especially blindly increasing the dose. The state advocates the use of highly efficient, low-toxicity, environmentally friendly chemical pesticides and biological pesticides, and requires the scientific control of pesticides and sustainable control of agricultural pests. Academician Guo Yuyuan emphasized that excessive use of pesticides does not follow regulations, resulting in serious problems such as pesticide poisoning and agricultural product residues. Therefore, pesticide residues must be strictly tested in accordance with domestic standards and must not be exceeded. Do not blindly reject chemical pesticides and use biological pesticides only, but combine them to form complementary advantages. For many years, China has implemented the plant protection policy of “prevention first, comprehensive prevention and control”, which includes the use of chemical protection technologies that comply with the principle of “comprehensive prevention and control”, and a large-scale demonstration application of about 270,000 hectares in 37 comprehensive prevention and control demonstration areas. The rate of about 6.7 million hectares has caused some major pests and diseases to be effectively controlled or mitigated. The loss of grain is 15 30 kg per mu and 4-6 kg of lint. In particular, it has withstood the severe test of successive outbreaks of cotton bollworm, brown rice borer, and wheat stripe rust. The pesticide application amount has been reduced by 1/3, the number of natural enemies has doubled, and the input-output ratio has reached 1:5 10. Significant economic, social, and ecological benefits have brought the overall level of China's comprehensive pest control technology to a new stage.