Humic acid is a kind of natural organic matter. It is the remains of animals and plants in forests, grasslands, swamps and other ancient times hundreds of millions of years ago. It is a type of natural substance accumulated through changes in the earth’s crust, decomposition of plant microorganisms, and a series of chemical transformations. Organic compounds, rich in organic matter and humic acid. It exists in large quantities in lignite, weathered coal, and peat. Humic acid is a mixture of a group of amorphous acidic substances with aromatic structures and similar properties. It is a type of natural organic macromolecule that is decomposed and synthesized by animal and plant residues (mainly plant residues) through microorganisms and geochemistry polymer
1) Chemical effect: Change the fixation properties of the soil.
There are many charged groups on the humic acid molecules, which can capture (chelate) some free cations or anions in the soil solution so that there is not too much OH- or H+ in the soil solution, thereby buffering the alkaline or alkaline soil. Acidic, that is to say, humic acid has the function of adjusting the pH value of the soil.
Medium and trace elements such as iron, zinc, and calcium are no longer afraid of reducing the effectiveness of being absorbed by plants because the soil is too acidic or alkaline; the ions captured on these groups of humic acid are equivalent to maintaining the soil for the soil. Without these mineral nutrients, leaching losses will be reduced and fertilizer efficiency will be improved.
2) Biological effects: Stimulate plant and soil microbial activity.
(1) Humic acid also has the function of a biocatalyst, which can help various reactions in plants, thereby helping plants synthesize more chlorophyll, sugars, amino acids, etc., so that plants grow healthier;
3) Stimulate physiological metabolism.
Humic acid contains a variety of active functional genes, which can enhance the activity of catalase and polyphenol oxidase in crops, stimulate physiological metabolism, and promote growth and development. For example, humic acid can promote early germination of seeds and high seedling emergence rate, especially at low temperatures; it can stimulate the division and growth of extreme meristem cells in the root system, causing seedlings to take root quickly, resulting in more roots, increased root mass, and elongated root systems. , increasing the ability of crops to absorb water and nutrients. Therefore, the supply of nutrients is sufficient, the crop stems are strong and strong, the branches and leaves are luxuriant, the photosynthesis is enhanced, the transfer of nutrients to the fruiting bodies is accelerated, and the crops are colored and matured in advance.
(2)Precautions for the use of humic acid:
1. The use of humic acid should follow the principle of small amounts and multiple times. It is better to apply a large amount of humic acid at one time than to apply it in multiple times;
2. Combining humic acid flushing and spraying will achieve better results.
3. Many crops will not have visible effects after applying humic acid, such as rapeseed. Therefore, when there is no effect on crops, it is not that the humic acid is fake, but because the effect is not obvious.
How to make the humic acid into granules?The organic fertilizer machienry is best choice to make it.
Post time: Sep-18-2023