Humic acid is a major electron donor (reducing agent) and a major factor determining and controlling soil redox potential, and thus has a great influence on many photochemical, chemical and enzymatic electronic processes in soil.
The acidic functional groups of humic acid exist in the internal structure and react with calcium and magnesium ions in the soil to form an aggregate structure, while the hydrophobic part of humic acid is in the outer layer of the aggregate structure, thus preventing the infiltration of water and the decomposition of soil aggregates.
Sodium humate is a relatively stable natural macromolecular organic matter with an aromatic structure. It is composed of an intermittent network connected by sparse aromatic rings, and there are many voids of different sizes in the structure.
Humic Substances, especially Humic Acid, which accounts for more than 60% of soil organic matter, is the core substance of soil organic matter and plays a decisive role in soil fertility.
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Feeding feed containing humic acid can treat diarrhea of piglets and prevent gastrointestinal diseases, especially in the season of frequent gastrointestinal diseases and the incidence rate of pigs fed HA diet decreased significantly.
According to test study in Japan, HA is used as a feed additive for chickens can increase egg production by 8-15% and preventing feather picking, pecking tail and soft foot disease in chickens.
The source, concentration, molecular weight, functional groups, heterogeneity, molecular structure and composition of humic acid can become the key factors affecting the growth and development of crop roots.