Humic acid is a common organic substance in soil and waters, mainly produced by the decomposition of plant residues, animal feces and other organic matter.
Humic acid is mainly composed of three substances: fulvic acid, fulvic acid, and black humic acid.
Fulvic acid, also called fulvic acid, is highly acidic and has a strong ability to corrode minerals. Its main effect is to make minerals that are difficult to tolerate in the soil soluble, especially phosphorus, potassium, iron, calcium, magnesium, and manganese. etc., and then facilitate plant absorption.
Phosphoric acid, also called humic acid, is a hydrophilic colloid with negative charges that can adsorb or replace K+, Na+, NH4+ plasma in the soil. It can change the single-grain structure of the soil into a structure, and turn the soil particles into small reservoirs and fertilizer reservoirs that retain water and fertilizer, thereby improving the soil’s ability to retain water and fertilizer, increasing soil voids, and increasing soil air content.
Melanohumic acid is brown humic acid that is tightly combined with minerals under the effects of freezing and drying, and has little effect in soil.
Therefore, the main functions and characteristics of humic acid are:
Soil improvement effect: Humic acid plays an important role in regulating the content and texture of soil organic matter, helping to improve soil structure, increase soil aeration and water retention.
Effect on plant growth: Humic acid can adsorb, store and release the nutrients needed by plants, providing nitrogen, phosphorus, potassium and other trace elements needed for plant growth.
Impact on the environment: Humic acid has the ability to adsorb heavy metals, organic matter and radioactive substances, helping to reduce their migration and pollution in soil and water bodies.
Impact on water quality: Humic acid can reduce the pH value of the water body and affect the pH value of the water body. It can also absorb organic matter and heavy metals in the water and purify the water quality.
In general, humic acid is an important organic matter in soil and water and has an important impact on the environment and ecosystems.
