农作物在生长发育过程中,既需要肥料供给养分,又需要农药控制病虫危害。农药化肥合理混用,能降低成本,做到事半功倍、一举多得。 一、混用原则 既要发挥药效,又要发挥肥效;既不能影响药肥的理化性质,又不对作物产生有害影响;做到对症下药,合理施肥,有利提高作物产量和省工、省成本。 Crops in the process of growth and development, both need fertilizer to provide nutrients, but also pesticides to control pests and diseases. Rational mix of pesticides and fertilizers, can reduce costs, do more with less, in one fell swoop. First, the principle of mixing both to play a pharmacodynamic effect, but also to play a fertilizers; neither can affect the physical and chemical properties of fertilizer, but also have no harmful effects on crops; to remedy the problem, reasonable fertilization, favorable to increase crop yields and labor, the provincial cost.