Humic acid fertilizer is a type of organic fertilizer. Natural humic acid is formed by the decomposition of plant residues. It is widely found in soils, river mud and shallow burials of weathered coal, peat, and lignite. Contains carbon, hydrogen, oxygen, nitrogen and other elements, there is a certain fertilizer, but most of them are insoluble in water, if combined with potassium, sodium, ammonium and other substances, dried ammonia, it is easy to be absorbed by plants as nutrients.
