腐植酸是由生物残体分解而成的一种有机化合物,广泛存在于土壤、泥炭(草炭)、褐煤和各种风化煤中。把这种含腐植酸较高的煤炭,与氨水、磷矿粉、烧碱等反应,便可分别制成腐植酸铵、磷、钾、钠等各种腐植酸类肥料。各地使用这种肥料的实践证明,它是一种多功能的有机化肥,是土壤的改良剂,是农作物的刺激增产素,并有复活磷肥、提高氮肥的特效。 Humic acid is an organic compound that is decomposed from biological residues. It is widely found in soils, peat (peat), lignite and various weathered coal. The higher humic acid containing coal, and ammonia, phosphate rock, caustic soda and other reactions can be made of humic acid ammonium, phosphorus, potassium, sodium and other humic acid fertilizer. The practice of using this fertilizer all over the world has proved that it is a multi-functional organic fertilizer, a soil conditioner, a stimulant and stimulant hormone for crops, and a revival of phosphate fertilizer to enhance the effect of nitrogen fertilizer.