Physical, chemical, and biological effects of humic acid
The direct effect of humic acid is to promote plant growth and increase crop yield. In addition to the direct effects of humic acid, there are physical, chemical, and biological effects. Please see the following decomposition:
Humic acid improves soil structure; prevents soil cracking and erosion; increases soil water holding capacity, improves cold resistance; makes soil color darker, which is conducive to solar energy absorption.
Humic acid regulates soil pH; improves and optimizes plant nutrient and moisture absorption; increases soil buffer capacity; under alkaline conditions, it is a natural chelating agent (chelating with metal ions and promoting absorption by plants); It is rich in organic matter and minerals necessary for plant growth; it improves the solubility of organic fertilizers, reduces the loss of fertilizers; converts nutrients into a state that is easily absorbed by plants; strengthens the absorption of nitrogen by plants, and reduces the fixation of phosphorus. The elements such as nitrogen, phosphorus and potassium in the soil are stored in the soil, and the process of accelerating nutrient elements into the plant body can be accelerated, and the application effect of the inorganic fertilizer is improved. Therefore, humic acid is a plant nutrient element and a physiologically active substance. “Repository”.
Humic acid stimulates the growth and reproduction of beneficial microorganisms in the soil; enhances the plant’s natural resistance to disease and insects.