肥féi料級磷酸氫鈣俗稱白磷肥或者白肥，是生產飼料級磷酸氫鈣的副產品pǐn，主要用作配置復混肥的原料liào，也可直接施用於農田tián。白肥施入土壤後hòu，滿足作物前期生長需要yào，爲作物的中後期生長提供養分fēn；與重鈣和過磷酸鈣相比bǐ，水分含量低dī，易於復混肥生產控制zhì；顆粒細xì，提高復混肥外觀質量liàng。肥料級磷酸氫鈣溶於土壤中zhōng，釋放多種微量元素sù，可作爲各種微量元素的補充chōng。

Fertilizer-grade calcium hydrogen phosphate, commonly known as white phosphate fertilizer or white fertilizer, is a by-product of the production of feed-grade calcium hydrogen phosphate. It is mainly used as raw material for compounding fertilizer, and can also be directly applied to farmland. When white fertilizer is applied to soil, it can meet the needs of early crop growth and provide nutrients for the middle and late crop growth. Compared with heavy calcium and superphosphate, it has low water content and is easy to control the production of compound fertilizer. It has fine particles and improves the appearance quality of compound fertilizer. Fertilizer-grade calcium hydrogen phosphate dissolves in the soil and releases many trace elements, which can be used as a supplement to various trace elements.