农药在粮食增产和农民增收中起着不可取代的作用。而科学选购和合理使用农药一直困扰着农民,每一年都发生因为选购农药、使用不当而形成农作物损失,使农民遭受巨大经济损失。因此,有必要介绍农药选购的相关注意事项,并概括合理使用农药的方法,以期为农药的科学选购和合理使用提供借鉴。 Pesticides play an irreplaceable role in increasing grain yield and increasing farmers’ incomes. The scientific purchase and rational use of pesticides has plagued peasants every year because of the purchase of pesticides, improper use of crop losses, so that farmers suffer huge economic losses. Therefore, it is necessary to introduce the relevant considerations of pesticide purchase, and summarize the methods of rational use of pesticides, in order to provide reference for the scientific purchase and rational use of pesticides.