施用过磷酸鈣,在棕黄土和黄白土上对于主要作物均有明显的增产效果,在淤土上多数效果不显著。肥效的差異与土壤肥力和磷的貯量,特别是速效磷的含量有密切相关。磷肥能促进植物体中核蛋白的形成,加強植株对氮素和灰分元素的吸收能力,增进穗中蛋白質的形成。适宜的施用量与氮磷配合施用,能提高磷肥肥效。 Application of superphosphate, both brown and yellow soil on the main crops have a significant yield-increasing effect, the majority of silt on the effect is not significant. The difference in fertilizer efficiency is closely related to soil fertility and phosphorus storage, especially available phosphorus. Phosphate fertilizer can promote the formation of nucleoprotein in plants, enhance the plant’s absorption capacity of nitrogen and ash, and promote the formation of protein in ear. Appropriate amount of application and nitrogen and phosphorus with the application, can improve fertilizer efficiency.