Phosphorus powder is a kind of phosphate rock powder. Phosphate rock powder is a representative species of relatively insoluble phosphate fertilizer. Phosphate powder can be produced by grinding phosphate rock. Phosphate rock powder generally cannot be used directly. The phosphate rock powder that can be used directly is a variety that contains a relatively high amount of weakly acidic phosphate, but not all phosphate rock can be ground and used directly as a phosphate fertilizer. The main component of phosphate rock powder is tricalcium phosphate or fluorinated calcium phosphate, with a phosphorus content of more than 14%. The level of phosphorus content is determined by the taste of the phosphate rock.