| English name | Fulvic acid |
| CAS number | 479-66-3 |
| molecular formula | C14H12O8 |
| molecular weight | 308.24000 |
| Physical and chemical properties | 1. Fulvic acid solid is brown or gray-black, sour, odorless, 2. Soluble in water, ethanol, dilute acid, dilute alkali and aqueous acetone. 3. Density: 1.79 g/cm3 Boiling point: 661oC at 760 mmHg, Melting point: 247oC |
| Quality standard | 1. Appearance: The original drug is yellow crystalline solid, yellowish brown to black granular or powdery substance 2. Dosage form: 1. Fulvic acid content ≥ 95%, 10% aqueous solution pH 2.5-3, Heavy metal <20PPM 4, arsenic salt <2PPM, E4∥E6 ratio between 10-15 3. Detection methods: mass spectrometry, mass spectrometry, organic matter determination, aqueous solution determination |
Mechanism of action
1. Soil improvement: Fulvic acid can improve soil structure and texture, increase soil permeability and water retention. It can combine with clay particles and other particles in the soil to form stable aggregates, improve the mobility of air and water in the soil, and improve the fertility of the soil.
2. Nutrient supply: Fulvic acid can form chelate complexes with inorganic nutrients in the soil, increasing the availability and stability of nutrients. It can absorb and release nutrients, help plant roots absorb and utilize nutrients, and improve the effective utilization of nutrients.
3. Activate enzyme activity: Fulvic acid can promote the activities and biochemical processes of microorganisms in the soil, and increase the enzyme activity in the soil. It can provide nutrients and growth conditions for microorganisms in the soil, enhance the microbial activity of the soil, and promote the reproduction and function of beneficial microorganisms.
4. Plant growth regulation: Fulvic acid can regulate the growth and development of plants through the interaction with plant roots and cells. It can increase the growth and branching of plant roots, and promote the root development and nutrient absorption capacity of plants. In addition, fulvic acid can also enhance the resistance of plants to adversity, and improve the ability of plants to resist diseases, insect pests and adversity stress.
Features
1. It can be used as a plant growth regulator.
2. Used for crop spraying, drought resistance, dry hot wind resistance. Taking foliar spraying of wheat as an example, the average stomatal opening can be reduced by about two-thirds. At the same time, it can also improve the vitality of the plant root system, prevent premature aging, increase the activity of various enzymes, and increase the chlorophyll content by more than 20%.
3. It is used for foliar spraying of economic crops such as apples, grapes, peanuts, watermelons, vegetables, and tea leaves. It can increase the sugar content by 2-4 degrees, decrease the acidity, and increase the VC, so it can improve the quality of the fruit. Used in cotton to prevent and control yellow wilt and increase cotton yield by 15-30%.
4. Used in medical treatment, it can increase body immunity, adjust gastrointestinal function, anti-tumor, have hemostatic, anti-inflammatory and blood-activating and stasis-removing effects, and has better curative effect on hypertension and gynecological diseases.
5. As a feed additive, it can increase the appetite of live pigs, make them tender and increase their fat; increase the egg production rate of chickens by 15.5%, the hatching rate of chickens by 21.8%, and the healthy chick rate by 15-20%, preventing livestock diseases and chicken plague.
6. Used in industry, cigar dyes, ceramic additives, beneficiation inhibitors, battery cathode expanders, heavy metal ion adsorbents, etc.
Usage method
The main application objects are wheat, corn, sweet potato, millet, rice, cotton, peanut, rape, tobacco, sericulture, melon and fruit, vegetables, etc.; it can be mixed with some non-alkaline pesticides, and often has a synergistic effect.
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