Structure, Function and Function of Humic Acid

1. Structure: Humic acid is a natural organic weak acid composed of three parts: yellow humic acid, black humic acid, and brown humic acid.

2. Element composition: Coal humic acid and humic acid in soil organic matter have similar structures and properties. The main elements of humic acid include carbon, hydrogen, oxygen, and a small amount of nitrogen and sulfur, as well as various functional groups.

3. The role of humic acid: Generally, more than half of the soil organic matter is humic acid, while in corrosive matter, humic acid is the main body and the salt that combines with metal ions. Humic acid is the most active and effective part of organic matter.