There is a fertilizer, which is a slow release agent for nitrogen fertilizer, a synergist for phosphate fertilizer, a protective agent for potassium fertilizer, a chelating agent for medium and trace elements, and it is a humic acid fertilizer.
Humic acid itself contains the elements carbon, hydrogen, oxygen, nitrogen, etc. required for plant growth, and it can increase the utilization of nitrogen, phosphorus and potassium fertilizers. Therefore, the effect of humic acid on crop yield is very obvious. The application of humic acid fertilizer and organic-inorganic compound fertilizer is compared with the application of chemical fertilizer: the general field grain and oil crops increase production by 8% to 20%, and the fruits, vegetables and cash crops generally increase by 15% to 35%. Therefore, in agricultural production, it is an indispensable helper for farmers’ friends. How much do you know about humic acid fertilizer?
First, what humic acid
Humic acid is a mixture of natural organic macromolecular compounds. Widely found in nature, the proportion of humic acid in soil is the largest. Soil humic acid is a physicochemical heterogeneous complex. The molecular weight of the mixture is polydisperse. The mixture is natural, high molecular weight, yellow to black, amorphous. It is composed of a colloidal, fatty and aromatic organic polyelectrolyte and cannot be represented by a single chemical structural formula.
Second, where does humic acid come from?
- Soil humic acid is innate, mainly a mixture of special macromolecular organic compounds formed by plants under the action of microorganisms.
- Coal humic acid is a mixture of macromolecular organic compounds formed by microorganisms after decomposition and conversion of plants and long-term geochemical action.
Elemental composition: Coal humic acid has similar structure and properties to humic acid in soil organic matter. The main elements of humic acid are carbon, hydrogen, oxygen, and a small amount of nitrogen and sulfur, in addition to various functional groups.
The role of humic acid: Generally, the above organic matter is humic acid. In the corrosive nature, humic acid is the main body and its salt combined with metal ions. Humic acid is the most active and effective part of organic matter.