复混肥料是指氮、磷、钾3种养分中,至少有两种养分由化学方法和(或)掺混方法制成的肥料。含氮、磷、钾任何两种元素的肥料称为二元复混肥。同时含有氮、磷、钾3种元素的复混肥称为三元复混肥,并用N—P2O5—K2O的配合式表示相应氮、磷、钾的百 Compound fertilizer refers to the nitrogen, phosphorus and potassium three kinds of nutrients, at least two nutrients by chemical methods and (or) blending of fertilizer. Fertilizers containing any two elements of nitrogen, phosphorus and potassium are called binary compound fertilizers. At the same time containing three elements of nitrogen, phosphorus and potassium compound fertilizer ternary compound fertilizer, and N-P2O5-K2O with the corresponding formula that the corresponding nitrogen, phosphorus and potassium of the hundred