The causes of high content of calcium in feed-grade DCP were sought, resulting from low crystal water in product (only 0.3), by drying and ignition experiment at various temperatures.

• 通过不同温度下的烘干、灼烧实验，分析饲料级磷酸氢钙中钙含量偏高的主要原因是产品结晶水含量少，仅0.；3个结晶水。