农药对防治农作物病虫、草害 ,保证其正常生长发育和获得高产优质是具有积极作用的。但是 ,盲目地、不合理使用农药 ,却能影响农产品的品质和产量的提高 ,污染土壤、水体、大气环境等 ,危害人畜健康。安全用药 ,就是在使用农药时防止作物和人畜中毒及残毒污染。根据作物种类和 Pesticides play a positive role in preventing and controlling pests and diseases of crops, ensuring their normal growth and development and obtaining high yield and good quality. However, blindly or unreasonably using pesticides can affect the quality and output of agricultural products, pollute the soil, water bodies and the atmosphere, and endanger the health of both domestic and human beings. Safe medication is to prevent crop and livestock poisoning and residual poison pollution when using pesticides. Depending on crop type and