农用聚磷酸铵在土壤中的有效性研究进展及在农业上的应用

近年来,农用聚磷酸铵作为一种新型肥料逐渐进入我国化肥领域,常用作高浓度液体复合肥料的基础磷肥。聚磷酸铵pH值近中性,结晶温度低,具有螯合性、缓释性,有着很大发展空间。本文综述了聚磷酸铵在土壤中有效性(溶解性与移动性)的影响因素,重点分析水解速率、土壤矿物、土壤质地与水分对聚磷酸铵在土壤中的有效性,并分析聚磷酸铵在农业上的应用与发展前景。

Research progress on the availability of ammonium polyphosphate in soil and its application in agriculture

The agricultural ammonium polyphosphates gradually enter the field of chemical fertilizers in China as a new fertilizer in recent years,and are commonly used as a basic phosphate for high concentration liquid composite fertilizer.The pH of ammonium polyphosphate is near neutral,with good properties of low crystallization temperature,chelating,and slow release,which has great potential as the new basic phosphate.In this paper,the factors influencing the availability (solubility and mobility) of ammonium polyphosphate in soil were reviewed.The effects of hydrolysis rate,soil mineral,soil texture and moisture on the availability of ammonium polyphosphate in soil were mainly illustrated.And we also analyzed the application and development prospect of ammonium polyphosphate in agriculture.