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Humic Acid Basic Knowledge

Sep 11, 2017

1. Humic acid is a mixture of natural organic macromolecular compounds. Widely present in nature, the proportion of humic acid in the soil is the largest, soil humic acid is physicochemical heterogeneous complex mixture of molecular weight is polydisperse, the mixture is natural, high molecular weight, yellow to black, Amorphous, colloidal, fatty and aromatic organic polyelectrolyte composition, can not use a single chemical structure that.

Second, where is humic acid come from?

1, soil humic acid born, mainly plant under the action of microorganisms in the formation of a class of special macromolecule organic compounds mixture.

2, coal humic acid is a microbial decomposition and transformation of plants, but also after long-term geological and chemical effects, and the formation of a class of macromolecular organic compounds mixture.

Third, the structure and function of humic acid

1, structure

Humic acid is a class of natural organic weak acid, composed of fulvic acid, black fulvic acid and brown acid three parts.

2, the composition of elements

Coal humic acid and soil organic matter in humic acid has a similar structure and nature of the main elements of humic acid carbon, hydrogen, oxygen, there are a small amount of nitrogen and sulfur, in addition to a variety of functional groups.

3, the role of humic acid

Soil organic matter is generally above the humic acid, humic acid in the corrosive acid is the main body and its combination with metal ions, humic acid is the most active and most effective part of organic matter.

(1) the direct effect of humic acid

Promote plant growth and increase crop yields.

(2) indirect effect

Physical role

A. Improve soil structure. B. Prevention of soil cracking and erosion. C. increase soil water holding capacity, improve cold resistance. D. make the soil color darker, is conducive to solar energy absorption. ② chemical effect. A. Adjust soil pH. B. Improve and optimize plant absorption of nutrients and water. C. increase soil buffer capacity. D. In alkaline conditions, is a natural chelating agent (chelated with metal ions, promote the absorption of plants). E. Rich in organic matter and minerals necessary for plant growth. F. Improve the solubility of organic fertilizers and reduce the loss of fertilizer. G. The nutrient element is converted into a state easily absorbed by the plant. H. can strengthen the plant nitrogen absorption, reduce phosphorus immobilization, can penetrate the soil in the nitrogen, phosphorus and potassium and other elements, the protection box stored in the soil, and can accelerate the process of nutrient into the plant body, improve the application of inorganic fertilizer Therefore, humic acid is a "reserve" for plant nutrient elements and physiologically active substances.

③ biological effects

A. stimulate the growth and reproduction of beneficial microbes in the soil. B. to improve the natural plant disease resistance, pest resistance.

Fourth, the commonly used humic acid species and characteristics

At present, humic acid commonly used as fertilizer is divided into lignite humic acid, weathered coal humic acid, peat (grassland humic acid).

1, lignite humic acid is the second stage of the process of coal (diagenetic) products, to the bitter coal phase has no humic acid, lignite humic acid in the general content of 1-85%, brown brown brown appearance, Black, according to the depth can be divided into

(1) soil lignite: the degree of coalification is shallow, low carbon content, humic acid content is higher, generally more than 40%.

(2) bright brown coal: a deeper degree of coal, carbon content is higher, humic acid content is low, generally 1-10%.

(3) dense lignite: between (1) and (2) between the general humic acid content of up to about 30%.

2, weathered coal humic acid that outcrop coal, commonly known as Johnson. Generally close to or exposed to the surface of the lignite, bituminous coal, anthracite, through the air, sunshine, rain and snow, sand, frozen and other infiltration of weathering, and the formation of the product. The humic acid produced by this process is weathering coal humic acid, also called natural regenerated humic acid, humic acid content in weathered coal fluctuates greatly, ranging from 5-80%.

3, peat (peat, peat, etc.) humic acid

Peat is the initial stage of coal formation, also known as peat, Chinese peat humic acid content in 20-40%. Peat in the organic matter, is not decomposed by the plant waste and humic acid composition, the Chinese peat humic acid content of 20-40%.

Fifth, the development prospects of humic acid fertilizer

1, the whole process of green food, quality control technology system, the whole has reached the EU, the United States, Japan and other developed countries, food quality and safety standards, has been in international standards, but how to produce green and safe food, the fundamental problem lies in how to overcome and To prevent the problem of soil pollution From the perspective of fertilization, we must adhere to the combination of organic and inorganic fertilizers, the use of humic acid fertilizer is the only choice, humic acid and fertilizer can be combined to achieve 1 +1> 2 integrated effect.

2, a large number of studies have shown that humic acid is a friend of inorganic fertilizers, nitrogen fertilizer is the slow release agent and stabilizer, phosphate fertilizer synergist, potash protection agent, is the trace element of the regulator and chelating agent, Acid has a significant synergistic effect on fertilizer, is the world's fertilizer in the Everest.

3, the future direction of development of humic acid fertilizers are: intelligent, professional, composite, long-term, granular and regional fool fat.

It can be seen that the development and application of humic acid fertilizers is broad prospects. Only humic acid fertilizers can be used to realize the greening of agricultural fertilizers in order to promote and promote the production and development of green agricultural products.

First, the excessive use of inorganic fertilizers and pesticides harm and improvement measures, decades of China's fertilizer consumption increased by 10 times, but food production increased by only 1 times, indicating that fertilizer has been significantly excessive use, if the current use of chemical pesticides, 50 years later, China will have one third of the arable land into a barren land, according to experts estimate that the world, according to the current pollution rate, not take 30 years, the Earth is difficult to find a clean soil.

1, to promote advanced and practical technology, the rational use of pesticides, fertilizers.

2, to carry out biological pesticides, promote natural enemies disease prevention and treatment, pest technology.

3, to encourage farmers to use farm manure

4, the development of green food, organic food.

5, to guide the use of pesticides to reduce the use of pesticide standards, and gradually reduce the amount of chemical fertilizers, pesticides. This is an important and urgent task of recommending agricultural science and technology revolution. It is necessary to plan and deploy as soon as possible, strengthen the guidance and pay close attention to the implementation.

Lead instructions fully explain the organic fertilizer to be more, strictly control the amount of fertilizer applied, is imperative urgent task. The

Second, the specific effect of humic acid fertilizer

Humic acid is a kind of organic fertilizer with the highest organic matter content and the best effect. It is the improving agent of soil and the slow release agent of chemical fertilizer. The combination of humic acid and chemical fertilizer can realize 1 + 1 > 2 of the integrated effect, which is any fertilizer can not have the specific effect.

Third, a number of comprehensive measures to promote agricultural production

On the role of agricultural production technology, can not be a single assessment, must be comprehensive treatment, the current effect is significantly improved in terms of seed is not the only conditions for production, soil testing formula is only fertilizer, fertilization basis, only the fine varieties , The slow release of a fertilizer, high efficiency and low toxicity of pesticides, multi-functional agricultural machinery, conservation tillage, fertilizer and water conservation irrigation and other advanced agricultural technology integration in order to form the farmers "will use", "income" and "fool technology "Can only really achieve 1 + 1> 2 specific effects, any single technology, it is never possible to achieve such an integrated effect.

In the case of fertilizer selection, the current application of multifunctional humic acid fertilizers is the most affordable and effective option.

Fourth, the comprehensive role of humic acid in a variety of functions

1, humic acid is a water, water storage function of organic colloidal material

Humic acid cation exchange capacity, a strong adsorption buffer and chelating ability, can improve the soil nutrient utilization, buffer acid and alkali hazards and so on.

Humic acid is organic macromolecular colloid, has a strong water absorption, water storage function, clay particles water absorption is generally 50% -60%, while the humic acid material water absorption rate of up to 500% -600%, so, The use of humic acid fertilizers is beneficial in improving soil moisture.

2, humic acid can improve the soil structure

Organic soils are organic-inorganic complex, inorganic mineral colloid generally in the soil content of up to 95% above the soil base fertilizer have a certain impact, and can not be changed by artificial measures, organic colloids that humic substances, generally Only about 5% of the organic-inorganic complex, but he has the same important role as the mineral colloid, and can take artificial measures to control, the application of organic fertilizers, the use of humic acid soil improver and soil improved fertilizer, increase soil The content of humic acid in the soil, the application of humic acid as the formation of soil aggregate structure of the adhesive, improve the soil organic - inorganic compound degree, an increase of soil large size water - stable aggregates, so that the soil structure is improved, Application of humic acid fertilizers, can effectively improve the physical structure of various soils, therefore, it is said that humic acid is a high quality soil conditioner.

3, foliar spraying humic acid liquid fertilizer, can reduce stomatal conductance, reduce water transpiration and loss. According to the experimental wheat spraying fulvic acid, the leaf stomatal conductance of wheat decreased by 33.7% compared with the control. , Wheat spraying fulvic acid, not only reduce the stomatal conductance of the leaves, but also to reduce the opening of the wheat stomata and stomatal closure, but also for the wheat to provide nutrients.

4, humic acid can stimulate the growth of crop roots, enhance the ability of roots of water absorption.

Humic acid contains a variety of chemical activity and biological activity of the functional group, with the role of stimulating the growth and development of crops can make the seeds early germination, early emergence, early flowering, early fruit, but also increase the root length, root and root Vitality, and enhance the ability of crop roots to absorb nutrients and moisture.

5, humic acid can enhance the plant's own physiological regulation function, improve crop cold resistance.

The application of humic acid fertilizer can enhance the activity of enzymes in soil and plant body, regulate the physiological metabolism of crops and enhance the adaptability of crops to adverse environmental conditions.

In summary, humic acid and humic acid fertilizers can improve the soil structure, improve soil physical and chemical properties, enhance soil water retention, fertilizer ability, can stimulate crop growth and development, improve water absorption capacity, reduce leaf water transpiration and Loss, enhance the ability of crops to resist bad environments, and improve water and nutrient utilization.

Six performance:

The long-term effectiveness of organic fertilizer, the quick effect of inorganic fertilizer, the potency of bio-fertilizer, the diversity of mineral fertilizer, the versatility of compound fertilizer and the convenience of fertilization.

Ten functions:

Activation of soil, fertilizers and soil moisture, lifting the board, high resistance to replanting, strong resistance to stimulate the development of accelerated growth, quality reduction, root system developed, green.

Four major selling points:

The highest content, the strongest activity, the highest price, the best service.

What is humic acid organic fertilizer?

The use of lignite, oil shale and other raw materials, using different production methods, with a large number of humic acid and crop growth and development required by the oxygen, phosphorus, potassium and some trace elements in the product, called humic acid organic fertilizer The

What is the difference between humic acid and organic manure?

Farm manure through the complete maturity, can be applied to the soil, and the need for long conversion, and ultimately into a humic acid crop to absorb, and humic acid organic fertilizer to the crop directly to provide the necessary nutrients, so it is more than farm manure More easily absorbed, the use of high, quick.

High activity humic acid function

High activity humic acid, organic combination of microorganisms and high quality humic acid, product activity is high, the effect is obvious. Main function:

First, improve the soil structure, promote the formation of aggregates, coordination of soil water, fertilizer, gas, heat conditions, both ventilation, but also water, not crust.

Second, enhance soil fertility and fertilizer capacity, to maintain fertilizer capacity, reduce the effective nutrient loss, fertilizer for a long time, so that a variety of quick chemical fertilizer from the "storm, fierce, short" becomes "slow, stable, The

Third, to improve soil acidity, reduce the side effects of toxic factors.

Fourth, the microbial life activities to provide the necessary nutrients to promote microbial reproduction and activities, and enhance the activity of microorganisms.

5, to improve fertilizer efficiency, humic acid and nitrogen, nitrogen fertilizer yield can be increased by about 10%, phosphorus utilization can be more than doubled.

6, can be early germination and improve seed germination rate and emergence rate, with a certain concentration of humic acid soaking, can be sprouted 1-3 days earlier, the emergence rate increased by 10% -25%.

Seven, to promote rooting and improve the ability of root water absorption, with humic acid dip root dip root, crop roots quickly, root number, root weight increase, and enhance the root of the nutrient absorption capacity.

Eight, can enhance the development of reproductive organs, early flowering, improve the rate of pollination, increase grain weight, fruit weight.

9, to enhance crop resistance, the use of humic acid crops cold and drought resistance, disease resistance significantly enhanced.

10, to stimulate crop growth and development, the use of humic acid can enhance the activity of a variety of enzymes, improve the ability of crops to absorb water and nutrients, enhance crop metabolism, accelerate growth and development, early maturity, improve quality.