How Fulvic Acid Benefit to Soil

1.Improve the soil Improve soil aggregate structure. Fulvic acid is a humic substance, which can affect the properties of the soil, promote the formation of a more stable aggregate structure in the soil, increase the content of aggregates ≥ 0.25mm in the soil by 10-20%, and increase the content of organic matter by 10%, so that the soil can retain water. , Increase ventilation, is conducive to the growth of crops.

2. Enhance soil water retention. Fulvic acid is a kind of hydrophilic colloid with strong water absorption capacity. The maximum water absorption capacity can exceed 500%. The weight of water absorbed from saturated atmosphere can be more than double its own weight, which is much larger than that of ordinary mineral colloids; Fulvic acid inhibits crop transpiration, slows down soil water consumption and increases soil water content accordingly.

3. Enhance soil fertility. Fulvic acid itself is an organic acid, which not only increases the dissolution of minerals in the soil, provides soil nutrients, but also increases the availability of nutrients through complexation. As an organic colloid, fulvic acid has both positive and negative charges, which can adsorb anions and cations, so that these nutrients can be preserved in the soil, so that they will not be lost with water, and improve the utilization rate of fertilizers, which is of great significance in sandy soil.

4. Adjust the pH of the soil solution. Fulvic acid and fulvic salts are converted into each other to form a buffer system, which plays the role of adjusting the pH of the soil solution.

5. Reduce soil salinity. The colloidal structure formed by fulvic acid complexation and chelation of metal cations in the soil and its porosity can adsorb ions or molecules in the soil solution and reduce the salt concentration of the soil solution.

6. Biological action Fulvic acid contains a variety of oxygen-containing functional groups, which determine its physiological activity, thereby regulating life activities, promoting the growth and reproduction of beneficial bacteria, and inhibiting the number of harmful microorganisms; the carboxyl and phenolic hydroxyl groups in fulvic acid have certain Inhibit the effect of viruses.