肥料级磷酸氢钙俗称白磷肥或者白肥，是生产饲料级磷酸氢钙的副产品，主要用作配置复混肥的原料，也可直接施用于农田。白肥施入土壤后，满足作物前期生长需要，为作物的中后期生长提供养分；与重钙和过磷酸钙相比，水分含量低，易于复混肥生产控制；颗粒细，提高复混肥外观质量。肥料级磷酸氢钙溶于土壤中，释放多种微量元素，可作为各种微量元素的补充。

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.