Day: September 1, 2019

Humic acid is related to soil microbes and organic matter!

The most important feature of microorganisms is their small size, variety, rapid reproduction and strong environmental adaptability. Microorganisms are widely distributed in nature.

However, the place where the most microorganisms are concentrated is the soil, which provides various basic elements for the growth of microorganisms, and also has the advantages of good heat preservation performance and strong cushioning property. Therefore, soil is the base of microorganisms and is the most abundant of human beings. Strain resource library.

The most bacteria in the soil, accounting for 70-90% of the total amount of soil microorganisms. Different types of bacteria in the soil have different effects. Some can fix the nitrogen in the air, synthesize the protein in the cells; some can break down the straw of the crops, most of them are heterotrophic bacteria. In addition to bacteria, other microorganisms in the soil are more actinomycetes (the main producing bacteria of antibiotics) and fungi, while algae and protozoa are less.

Soil microbes are important factors in soil fertility. Microorganisms are a large-area system with a huge nutrient absorption surface, excretion surface of metabolic waste, and exchange surface of environmental information. Therefore, it absorbs more and transforms faster, providing high-speed growth and reproduction of microorganisms and synthesis of a large number of metabolites. Material basis.

The natural world is rich in materials and diverse in variety, providing abundant food for microorganisms. Microorganisms have diverse nutrient types and metabolic pathways, from inorganic nutrition to organic nutrition, which can make full use of natural resources; respiratory type diversity, which can live in aerobic environment, anoxic environment, and even anaerobic environment. Environmental diversity such as extreme heat, high salinity and extreme pH creates a wide variety of microorganisms and large quantities.

The soil contains a variety of organic and inorganic nutrients. It is a natural medium for microbial growth and development. The soil is extremely rich in microbial species. There are 2.5 billion bacteria, 700,000 actinomycetes, and 400,000 in 1g of cultivated soil. Fungi, 50,000 algae, 30,000 protozoa.
Most microorganisms multiply progeny by fission, and under suitable environmental conditions, they can be propagated for ten to twenty minutes. Most of the microorganisms are single cells, and the structure is simple. The whole cells are directly in contact with the environment, and are susceptible to environmental factors, causing changes in the DNA of the genetic material.

Microbial fertilizers are products that cause specific fertilizer effects on crops due to microbial life activities. They are screened from the soil and domesticated to improve the nutrition of crops.
It includes autonomous or symbiotic nitrogen-fixing bacteria that fix molecular nitrogen in the air and convert it into plant-usable nitrogen; in the soil, phosphorus and potassium that cannot be utilized by mineral plants are converted into effective phosphorus and potassium microorganisms, namely phosphorus. Bacterial and potassium bacteria; and plant root ring-promoting bacteria that secrete a variety of stimulants and antibiotics for beneficial crop growth.

Microbial research has a wide range of applications in agriculture:
Environmental aspects: Microorganisms can repair soil, restore soil vigor, reduce heavy metal pollution, and not cause secondary pollution. Microorganisms can also purify water and remove toxic gases from the air.
Crop growth: Microorganisms can promote the absorption of nutrients by crops, promote the growth of crops, and improve the immunity of crops. These do not pollute the environment and agricultural products like chemicals and hormones.

Humic acid: Humic acid is a major advancement of organic fertilizer, and has many advantages over chemical fertilizers and farmyard manure.

Organic matter is not necessarily humic acid, but humic acid must be the best organic matter! Soil organic matter deficiency is the main factor inhibiting microbial activity. The application of carbon source power source humic acid as a supplement to soil organic matter, one is to the soil only It is suitable for the living environment of beneficial microorganisms. Secondly, the microorganisms can secrete nutrients of various beneficial crops by decomposing the organic matter in the soil, and can promote the comprehensive utilization of soil organic and inorganic nutrients, thereby fundamentally reducing the amount of fertilizer and reaching humic acid. The role of weight loss and synergy. Humic acid is the original material of the soil. The application of humic acid can activate the microbial activity of the soil, and further repair the soil to achieve the purpose of healthy growth of the crop!

fulvic acid

Take you deeper into the fulvic acid

The effects of fulvic acid on soil, fertilizers and plants in the agricultural sector are:

  1. Improve soil Improve soil aggregate structure.

The fulvic acid is a humic substance, which can affect the nature of the soil, and promote the formation of a more stable agglomerate structure in the soil, so that the content of granules ≥ 0.25 mm in the soil is increased by 10-20%, and the content of organic matter is increased by 10%, so that the soil can maintain moisture. Increase ventilation, which is conducive to the growth of crops.

Enhance the water retention of the soil. Fulvic acid is a hydrophilic colloid with strong water absorption capacity. The maximum water absorption can exceed 500%. The weight of water absorbed from saturated atmosphere can be more than doubled, which is much larger than that of ordinary mineral colloid. The fulvic acid inhibits the transpiration of the crop, so that the soil water consumption rate is slowed down and the soil water content is correspondingly increased.

Enhance the fertility of the soil. The fulvic acid itself is an organic acid, which increases the dissolution of the mineral part of the soil, provides soil nutrients, and increases the effectiveness of nutrients through complexation. As an organic colloid, fulvic acid has positive and negative charges, which can adsorb anion and cation, so that these nutrients can be stored in the soil, not lost with water, and improve the utilization rate of fertilizer, which is especially important in sandy land.

Adjust the pH of the soil solution. The fulvic acid and the fulvic acid salt transform each other to form a buffer system, thereby regulating the pH of the soil solution.

Reduce soil salinity. The colloidal structure formed by the complexation of fulvic acid and chelated metal cations in the soil and its porosity (larger specific surface) can adsorb ions or molecules in the soil solution and reduce the concentration of salt in the soil solution.

Biological action fulvic acid contains a variety of oxygen-containing functional groups, which determine its physiological activity, thereby regulating the life activities, promoting the growth and reproduction of beneficial bacteria, and inhibiting the number of harmful microorganisms; the carboxyl group and phenolic hydroxyl group in fulvic acid have certain Inhibit the role of the virus.

2, improve fertilizer utilization fulvic acid contains carboxyl, phenolic hydroxyl and other functional groups, has strong complexation, chelation and surface adsorption capacity, can reduce the loss of ammonium nitrogen; increase the movement distance of phosphorus in the soil, inhibit soil water solubility The fixation of phosphorus can convert the ineffective phosphorus into effective phosphorus and promote the absorption of phosphorus by the root system. The fulvic acid can absorb and store potassium ions, and the effective potassium content, especially the potassium fertilizer, is especially effective. Experiments show that fulvic acid can increase the utilization rate of nitrogen, phosphorus and potassium nutrients in fertilizers by more than 20%.

3, slow release synergistic effect of pesticide fulvic acid has a surfactant function, can reduce the surface tension of water, emulsification and dispersion of pesticides; fulvic acid as a colloidal substance with a large viscosity and surface area may produce pesticides Strong physical sucking effect; fulvic acid itself has antibacterial and anti-disease effects, and the compounding with fungicides is equivalent to the compounding of two pesticides.

4, the stimulation of plant growth fulvic acid similar to plant endogenous hormones, can promote seed germination, root growth, fruit coloring early maturity. Specific manifestations: promote root growth and activity, similar to auxin effect; promote seed germination, emergence of seedlings and seedling growth, similar to the effect of gibberellin; make leaves enlarge, thicken, green, delayed senescence of lower leaves, similar The role of cytokinin; the reduction of stomatal, transpiration, similar to the role of abscisic acid; the fruit coloring, maturation, similar to ethylene ripening; promote cell division and cell elongation, differentiation, etc., similar to two The role of the above plant hormones.

5, improve the quality of agricultural products, fulvic acid enhances the synthesis of sugar, starch, protein, fat and various vitamins. It can stimulate the activity of polysaccharide enzyme, convert polysaccharide into soluble monosaccharide, thereby improve fruit sweetness; increase the ratio of total sugar to nicotine and potassium to chlorine in tobacco leaves, improve the quality of tobacco leaves; increase the total content of watermelon, cantaloupe and other fruits Sugar content and vitamin C content.

  1. Enhance the stress resistance index of crop stress-resistant plants (one): the content of ABA (abscisic acid: a plant hormone that inhibits growth) in plants. The ABA content of plants will increase under any adverse conditions. Abscisic acid is the “first messenger” that initiates the expression of stress-resistant genes in plants, and effectively activates the anti-reverse immune system in plants. Physiological mechanism of fulvic acid to improve plant stress resistance (common): fulvic acid can increase the content of ABA in plants.