Quality lignite or peat activity humic acid sodium is the production of raw materials. 活性腐植酸钠由优质的褐煤或泥炭制成。
Sodium salt of humic acid is selected as an adhesive to granulate fused calcium magnesium phosphate in this work. 选用腐植酸钠作为粘合剂，对钙镁磷肥进行造粒，得到的颗粒钙镁磷肥产品达到了出口日本的标准，此法值得推广和应用。
