1、总量失衡,结构性矛盾突出.从全国来看,随着几个大化肥项目投产和碳铵改小尿素工程的实施,化肥总生产能力继续增长,供大于求的矛盾更加严重.结构性矛盾也很突出,表现为氮肥过剩、磷肥少、钾肥缺.虽然近年复合肥生产增长较快,但高科技含量的品种仍不能满足需求,特别是大颗粒肥 1, the total imbalance, prominent structural contradictions from a national point of view, with the implementation of several large-scale fertilizer project and the implementation of ammonium bicarbonate project, the total production capacity of chemical fertilizers continue to grow, supply exceeds demand more serious. Contradictions are also prominent, the performance of surplus nitrogen, phosphate less, lack of potassium.Although the compound fertilizer production in recent years, the rapid growth, but the high-tech varieties are still unable to meet the demand, especially the large particle fertilizer