化学肥料常识五、复合肥料复合肥料通常是指用化学合成方法制成的，含有氮磷钾３要素中２种或２种以上的化学肥料，依其含有２种、３种或３种以上营养元素，分别称为二元、三元或多元复合肥。按所含元素不同，可分为氮磷、氮钾、磷钾、氮磷钾复合肥４种。复合肥料的有效成... Chemical fertilizers common sense 5, compound fertilizers Compound fertilizers usually refers to the chemical synthesis method is made, containing three elements of nitrogen, phosphorus and potassium in two or more than two kinds of chemical fertilizers, according to its containing 2, 3 or more kinds of nutrition Elements, respectively, referred to as binary, ternary or multiple fertilizer. According to different elements, can be divided into nitrogen and phosphorus, nitrogen and potassium, phosphorus and potassium, nitrogen, phosphorus and potassium compound fertilizer 4 kinds. Compound fertilizer effective into ...