With the increase of fertilizer efficiency, humic acid combined with nitrogen, the yield of nitrogen fertilizer can be increased by about 10%, and the utilization rate of phosphorus can be more than doubled.
Humic acid cation exchange capacity is big and has strong adsorption of buffer and chelating ability, which can improve the utilization rate of nutrients in the soil and Buffer acid and base hazards.
Humic acid is a high polymer heterogeneous aromatic material that contains hydroxyl, carboxyl, phenolic hydroxyl, and other active groups. It is weak acidity and is insoluble in water but alkaline.