磷是作物生长发育不可缺少的营养元素之一,它既是构成作物体的许多重要有机化合物的组成成分,同时又以多种方式参与作物体内的生理过程,对促进作物生长发育和生理代谢,夺取作物早熟、高产与优质都起着重要作用。随着氮肥施用量的增加,作物产量的提高,磷的需要量也随之增大,而磷肥在所有化学肥料中是利用率最低的。当季作物一般只能利用其有效 Phosphorus is one of the essential nutrient elements for the growth and development of crops. It is not only the component of many important organic compounds which constitute the crop body, but also participates in the physiological processes in the crop body in many ways, which can promote the growth and physiology of crops, Early maturity of crops, high yield and quality play an important role. With the increase of nitrogen fertilizer application, crop yield increase, phosphorus demand also increases, and phosphate fertilizer is the lowest utilization rate of all chemical fertilizers. Seasonal crops generally only use its effective