农药通常是指农业生产中广泛应用的各种化学药剂,主要用于防治农作物病、虫、鼠害和杂草,是一种重要的农业生产资料。往往使用少量的这类农药,就能起到毒杀危害各种农作物生长的病虫害、消除杂草和有害植物,促进或控制植物生长的作用。实际上农药不仅于此,凡是用来提高和保护农业、林业、畜牧业、渔业生产及环境卫生的化学药品,统统可以称之为农药。 Pesticides are generally used in agricultural production is widely used in various chemical agents, mainly for the control of crop diseases, insects, rodents and weeds, is an important agricultural means of production. Often using small quantities of these pesticides can act as a poison to pests and diseases that harm the growth of various crops, eliminate weeds and harmful plants, and promote or control plant growth. In fact, not only pesticides but also all chemicals used to enhance and protect agriculture, forestry, livestock husbandry, fishery production and environmental sanitation can all be called pesticides.