Extraction (or extraction) of humic acid and fulvic acid refers to the process of separating humic acid (fulvic acid) from raw materials with solvents such as strong alkali, neutral salt, organic acid salt, organic solvent and organic chelate. Improve and enhance the chemical and biological activity of humic acid (fulvic acid) through technical conditions (acidification, sulfonation, nitration, degradation, oxidation, etc.). Water-soluble humic acid generally refers to fulvic acid, or the part of humic acid, nitrohumic acid and fulvic acid that can be dissolved in water.

Features of water-soluble humic acid fertilizer:

Water soluble fertilizer refers to a multi-element compound fertilizer that can be completely dissolved in water, with obvious advantages such as instant solubility, high absorption rate, quick effect, no residue and easy application. Water-soluble humic acid fertilizer refers to a liquid or solid water-soluble fertilizer made of humic acid in a suitable proportion for plant growth, adding an appropriate amount of nitrogen, phosphorus, potassium or trace elements such as zinc, boron, iron, molybdenum, manganese, copper, etc. Its characteristics are:

First, the use of modern technology to purify water-soluble humic acid, compound large, medium, micro, and special elements to form a new fertilizer effect is remarkable, for the production of green and healthy food, reduce environmental pollution, reduce farmers' production costs to provide a favorable guarantee.

Second, water-soluble humic acid fertilizer can greatly extract nitrogen, phosphorus and promote potassium in the soil, cultivate soil fertility and promote crop root development.

Third, water-soluble humic acid fertilizer is widely used in food crops, cash crops, oil crops and flowers, etc., suitable for a wide range of crops and a wide range of use concentration.

Fourth, the nutrition of water-soluble humic acid fertilizer is reasonable and has a synergistic nutritional effect, which can greatly reduce the amount of fertilizers and pesticides.

Five, water-soluble humic acid fertilizer is economical, safe and convenient.

Water-soluble humic acid fertilizer can be multi-compound. Among them, a large number of elemental products are divided into solid or liquid two, and trace element products are only solid dosage forms.

Humic acid and large fertilizer fusion, humic acid as a large fertilizer fusion, can fuse N, P, K, mono fusion, binary fusion or ternary fusion, such as humic acid nitrogen fertilizer, humic acid phosphate fertilizer, humic acid potassium fertilizer, humic acid compound fertilizer. Humic acid fusion N, P, K, has the characteristics of flexibility and diversity, prominent function, significant efficiency, high utilization rate, can achieve the integration effect of 1+1 > 2.

Humic acid and nitrogen fertilizer combine organically to form a humic acid nitrogen fertilizer with fast efficiency and slow release, reducing nitrogen fertilizer loss and resulting ammonia pollution. Humic acid provides nitrogen utilization of 10% and can increase crop yield by more than 15%.

The combination of humic acid and phosphate fertilizer can reduce the fixation of phosphorus and improve the utilization rate of phosphorus. At the same time, humic acid into the soil can also activate the phosphorus that has been fixed in the soil, and increase the level of soil phosphorus supply. The combined phosphorus supply increase value of the two is generally 6.7 ~ 8.3 mg/kg. The humic acid compound phosphate fertilizer can increase the crop yield by more than 10%.

Humic acid and potassium fertilizer organically combined to form humic acid fast acting and slow release of both humic acid potassium fertilizer, even humic acid and potassium ion (K+), than humic acid and ammonium ion (NH4+) more reliable. The water solubility of potassium humate is very good, will not limit the absorption of plants, and will only make the fertilizer effect more lasting. Studies have shown that humic acid can increase the potassium absorption of crops by more than 30% and increase the yield by more than 12%.

Combined with the characteristics of humic acid itself, it can develop special fertilizer for field crops, special fertilizer for cash crops, special fertilizer for flower cultivation, seedling and other varieties. The development of functional fertilizer has become an urgent need for agricultural production. The use of humic acid complex selenium, zinc, magnesium made of water-soluble fertilizer, cultivation and production of mushrooms, apples, rice and other products rich in the above elements, not only good taste, but also easy to absorb, has an important role.