Phosphatic fertilzers are all derived from calcium salts of phosphoric acid and these are found as raw bones apatite and phosphate rock.
无论什么磷肥，全都来自含钙的磷酸盐。生骨粉，磷灰粉，磷灰石含有大量的这种盐类。
2
Mutual effects of calcium magnesium phosphate and humic acid enhance residual lead contents in soil.
钙镁磷肥、胡敏酸互作可增加土壤残渣态铅的含量。
3
Preparation method and chief process conditions of food grade calcium hydrogen phosphate from Kiln - way phosphoric acid are investigated and corresponding flow path is presented.