磷酸二氢钾是一种高效的磷、钾复合肥料，总有效成分为 86％，其中氧化钾为 34％，五氧化二磷为 52％。易溶于水，肥效迅速。由于磷酸二氢钾纯度高，售价贵，加之磷、钾入土后移动性差，故在施用上一定要讲科学、讲技术，否则既浪费肥料，增加成本，增产效果也不理想。 　　一? Potassium dihydrogen phosphate is an efficient phosphorus and potassium compound fertilizer, with the total active ingredient of 86%, of which 34% is potassium oxide and 52% is phosphorus pentoxide. Soluble in water, rapid fertilizer. As the purity of potassium dihydrogen phosphate, expensive, combined with phosphorus, potassium mobility after the poor, it must be applied in science, stresses technology, or waste of fertilizer, increase costs, increase production is not satisfactory. one?