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Humic Acid And Microorganism, A Good Partner For Soil Remediation
Mar 28, 2018

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The amount of microorganisms in the soil is huge, and microbial activity has a major impact on soil fertility. Soil microbial diversity can promote plant growth and development, enhance plant resistance, and inhibit the reproduction of soil pathogens.  "Soil-plant-soil microorganisms" constitute an organic whole. In production, soil biological disturbances (soil disturbances) often occur. In natural and farmland ecosystems, the interaction of “plant-soil” causes soil biological communities (including microorganisms, nematodes, and animals), which is unfavorable to the growth and development of the phenomenon of certain plants, even leads to the increase of harmful microorganisms in the soil, causing serious soil borne diseases and insect pests, soil microbial population and quantity change.

 

The effect of humic acid on soil microbial activity is manifold. Humic acid can optimize carbon nitrogen ratio (C/N) in the soil environment, which is conducive to the growth and development of microorganisms; Humic acid improves soil physical and chemical properties, provides the main soil microorganisms, helps establish microbial populations and promotes the accumulation of beneficial microorganisms in the soil by optimizing soil structure, and optimize solid, liquid and gas phases in the soil. Bacteria, actinomycetes, fungi, algae, protozoa, nematodes, cockroaches, etc. in soil are related to soil organic matter or soil humus content. A large number of test results at home and abroad show that the application of humic acid can significantly promote soil microbial activity and increase enzyme activity. Humic acid directly affects the physiological activities of soil microorganisms, increases the permeability of cell membranes, promotes the absorption of nutrients, and promotes the development of various physiological and biochemical reactions in microbial cells. Humic acid can be used as an electron receptor for anaerobic respiration and aerobic respiration in microorganisms to promote energy production and the growth and development of microorganisms.

 

Oppositely, bacillus subtilis, B. pumilus, some streptomyces, yeast, sspergillus, trichoderma, and penicillium in the soil can continuously decompose the weathered coal, Lignin, cellulose, etc. which applied to the soil, increase soil humic acid content, further increase and prolong the effect of humic acid.