随着农药科技的不断发展,我国农药品种结构发生了很大变化,高效低毒安全的新品种、新剂型和新型混剂不断涌现,应用技术进入了一个新的阶段,人们对农药的认识也发生了新的变化。由于商品农药品种繁多,一方面某一病虫草害有多种农药可以防治,另一方面 With the continuous development of pesticide science and technology, the structure of pesticide varieties in our country have undergone great changes. New breeds, new dosage forms and new types of mixture with high efficiency and low toxicity have emerged continuously. Application technologies have entered a new stage. People’s understanding of pesticides New changes have taken place. As a wide range of commodity pesticides, on the one hand a certain number of pests and diseases of pests and diseases can be controlled, on the other hand