Water-soluble humic acid fertilizer and its function

The 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 solution, neutral salt, organic salt, organic solvent and organic chelate. Through the technical conditions (acidification, sulfonation, nitrification, degradation, oxidation, etc.), the chemistry and biological activity of humic acid (fulvic acid) were improved and enhanced. Water-soluble humic acid generally refers to fulvic acid, or the 1-valent salt of humic acid, nitro humic acid and fulvic acid can be dissolved in water. The characteristics of water-soluble humic acid fertilizer (Water Soluble Fertilizer, referred to as WSF) refers to the multi-element compound fertilizer which can be completely dissolved in water, which has the advantages of quick solution, high absorption rate, quick effect, no residue, convenient application and so on. Water-soluble humic acid fertilizer is a liquid or solid water-soluble fertilizer made of humic acid suitable for plant growth and adding appropriate amount of nitrogen, phosphorus, potassium or trace elements such as zinc, boron, iron, molybdenum, manganese, copper and so on. Water-soluble humic acid fertilizer is dissolved or diluted in water for irrigation and fertilization, foliar fertilization, soilless cultivation, soaking seeds and dipping roots, etc. Its characteristics are as follows: first, using modern technology to purify water-soluble humic acid, the new fertilizer formed by compounding large, medium, micro and special elements has remarkable efficacy, which provides a favorable guarantee for the production of green and healthy food, reducing environmental pollution and reducing farmers' production costs. Second, water-soluble humic acid fertilizer can greatly increase nitrogen, dissolve phosphorus and promote potassium in 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. Fourth, the nutrient collocation of water-soluble humic acid fertilizer is reasonable, and it has synergistic nutrition effect, which can greatly reduce the use of chemical fertilizers and pesticides. Fifth, water-soluble humic acid fertilizer is economical, safe, convenient and efficient. Water-soluble humic acid fertilizer can be multi-component compound. Among them, a large number of elemental products are divided into solid or liquid, while trace element products are only solid dosage forms. Fusion of humic acid and large fertilizer humic acid as the fusion of large fertilizer, humic acid can fuse N, P, K, univariate fusion, binary fusion or ternary fusion, such as humic acid nitrogen fertilizer, humic acid phosphate fertilizer, humic acid potassium fertilizer, humic acid compound fertilizer. The fusion of N, P and K with humic acid has the characteristics of flexibility and diversity, outstanding functions, significant efficiency and high utilization rate, and can achieve the integration effect of 1: 1 > 2. The organic combination of humic acid and nitrogen fertilizer forms humic acid nitrogen fertilizer with both quick-acting and slow-release, which reduces the loss of nitrogen fertilizer and the resulting ammonia pollution. Humic acid provides 10% nitrogen use efficiency 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, the entry of humic acid into the soil can also activate the fixed phosphorus in the soil and increase the level of soil phosphorus supply. the combined phosphorus supply of humic acid and humic acid can increase the crop yield by more than 10%. At the same time, the entry of humic acid into the soil can also activate the fixed phosphorus in the soil and increase the level of soil phosphorus supply. The organic combination of humic acid and potassium fertilizer forms humic acid potassium fertilizer with both quick-acting and slow-release humic acid, and even humic acid combines with potassium ion (K +), which is more reliable than humic acid and ammonium ion (NH4+). Potassium humate has good water solubility and will not limit the absorption of plants, but will only make the fertilizer effect more lasting. Relevant studies have shown that humic acid can increase potassium uptake by crops by more than 30% and increase production by more than 12%. The combination of humic acid and special fertilizer combined with the characteristics of humic acid can develop special fertilizer for field crops, special fertilizer for cash crops, special fertilizer for flower cultivation, substrate for raising seedlings and so on. The development of functional fertilizers has become an urgent need for agricultural production. The use of humic acid complex selenium, zinc, magnesium and other water-soluble fertilizer to cultivate and produce Lentinus edodes, apples, rice and other products rich in the above elements, not only good taste, but also easy to absorb, which plays an important role in enhancing immunity. As of March 2012, a total of 1292 water-soluble humic acid products have been registered with the Ministry of Agriculture (including 276 and 1016). Suitable vegetable crops include cabbage, spinach, pakchoi, asparagus, kale, cabbage, cabbage, watermelon, melon, cucumber, pepper, tomato and other eggplant fruits and melons Carrots, potatoes and other root vegetables, potato and other three categories. In addition, it involves thousands of varieties of field crops such as rice, corn and wheat, and cash crops such as cotton, soybean, peanut, beet, rapeseed, garlic, Chinese wolfberry, tea, tobacco, strawberry, grape, jujube, pear, longan and citrus, and 845 enterprises in 29 provinces, municipalities and autonomous regions.