复混肥是根据不同土壤和植物的需要,将氮、磷、钾肥及其它微量元素按一定比例,通过机械手段渗混在一起或制成颗粒的肥料,取代单一施肥,避免了只施氮肥而忽视磷、钾肥等带来的弊病,从而提高肥料利用率和土壤肥力。复混肥的使用,有力地促进了配方施肥技术的应用,是农业再上新台阶的重大技术措施。几年来,全国各地运用土壤普查成果开展配方施肥,取得了显著的综合效益, Compound fertilizer is based on the needs of different soils and plants, the nitrogen, phosphorus, potash and other trace elements by a certain percentage, by mechanical means infiltration or granulation of fertilizers, instead of a single fertilization, to avoid neglect only nitrogen Phosphorus, potash and other ills, so as to improve fertilizer utilization and soil fertility. The use of compound fertilizer has effectively promoted the application of formula fertilization technology and is a major technical measure for bringing agriculture to a new level. In recent years, the use of soil census results across the country to carry out formula fertilization, achieved significant comprehensive benefits,