腐植酸是一类成分复杂的大分子化合物,其外观呈黑色或棕色,保水性、吸附性强,并能与许多化合物形成络合物。按其对不同溶剂的溶解性分成黄腐酸、棕腐酸和黑腐酸。腐植酸在自然界中广泛分布在土壤、湿地和泥炭等有机矿物中,含量可达30%～70%,主要功能是促生长,防病治病,是一种可 Humic acid is a class of complex macromolecular compounds, the appearance of black or brown, water retention, adsorption and can form complexes with many compounds. According to the solubility of different solvents into fulvic, fulvic and humic acid. Humic acid widely distributed in nature in the soil, wetlands and peat and other organic minerals, the content of up to 30% to 70%, the main function is to promote growth, disease prevention and treatment is a