【摘要】 首先提出我国的平衡施肥已经由大量元素间的平衡,进入到大量元素和中、微量元素平衡的阶段。并从国内外资料,重点讨论了过磷酸钙(SSP)在我国农田硫素营养平衡中的作用。继而分析了钙镁磷肥(FCM P)在石灰性土壤上肥效提高的原因,认为FCM P在我国有广阔的应用前景。最后对改善这两种低浓度磷肥的理化性状提出了要求。更多还原

【Abstract】 Balanced fertilization in China has reached a stage of combined use of NPK with secondary nutrients and micronutrients.Sulfur in SSP plays an important role in balanced fertilization.Compared with SSP in calcareous soils,the effect of FCMP increased in recent years is discussed,which shows that FCMP will be much more suitable.But the physical and chemical properties of these two lowanalysis phosphate fertilizers need to be improved.更多还原