First, stimulate physiological metabolism. Humic acid contains a variety of active functional genes, which can enhance the activity of catalase and polyphenol oxidase in crops, stimulate physiological metabolism and promote growth and development. For example, humic acid can promote the early germination of seeds, and the emergence rate is high, especially at low temperature; it can stimulate the division and growth of root meristem cells, so that the roots of the seedlings are fast, the roots are more, the roots are increased, and the roots are elongated. To increase the ability of crops to absorb water and nutrients. Therefore, the supply of nutrients is sufficient, the stems of the crops are fast and robust, the foliage is flourishing, the photosynthesis is enhanced, the nutrient is accelerated to the fruiting body, and the promoting country is colored in advance.
Second, change the characteristics of chemical fertilizer Humic acid contains carboxyl, phenolic hydroxyl and other functional groups, has a strong ion exchange and adsorption capacity, can make ammonium bicarbonate reduce the loss of ammonium nitrogen, improve the utilization of nitrogen fertilizer. The oxidatively degraded nitro-humic acid can inhibit the activity of urease and reduce the volatilization of urea. The degraded nitro-humic acid increases the distance of phosphorus in the soil, inhibits the fixation of water-soluble phosphorus in the soil, converts the available phosphorus into delayed-effect phosphorus, and promotes the absorption of phosphorus by the roots. The humic acid functional group can absorb and store potassium ions, so that the potassium fertilizer slowly decomposes, and the potassium is brightened to increase the content of available potassium. The humic acid and the poorly soluble trace elements can undergo a kneading reaction to form a humic acid trace element complex which is well absorbed by the crop, thereby facilitating the absorption of trace elements by roots and leaves.
Third, improve the soil structure. Humic acid can promote the formation of soil aggregate structure, regulate soil pH, regulate soil water, fertilizer, gas and heat, increase soil exchange capacity, achieve acid-base balance, improve soil water and fertilizer retention capacity, and promote soil microbial activities. Increase the number of aerobic bacteria, actinomycetes, and cellulolytic bacteria, accelerate the decomposition and conversion of organic substances, promote the release of nutrients, and facilitate the absorption of nutrients by crops.
Fourth, enhance the resistance to stress. Humic acid tenderness reduces the seven-hole opening strength of plant leaves, reduces leaf transpiration, thereby reducing the amount of water, improving the water status of plants, ensuring normal growth and development of crops under drought conditions, and enhancing drought resistance. Humic acid is mostly amphoteric colloid, which has large surface activity and inhibits fungi. It can enhance crop coldness, is easy to be cell membrane, change cell membrane permeability, promote absorption of inorganic nutrients, prevent rot disease, root rot, and reduce Pests and diseases.
Fifth, improve the quality of the child. Humic acid can form complexes or chelates with trace elements, increase the amount of trace elements moving from the roots to the leaves or other parts, regulate the ratio and balance of macroelements and trace elements, and strengthen the enzymes on sugar, starch, The synthesis of proteins, fats and various vitamins. It can promote the activity of enzymes, convert polysaccharides into soluble monosaccharides, increase the synthesis and accumulation of starch, protein and fatty substances, accelerate the primary products of various metabolisms, and think about the state and seeds from the stems or leaves, so that the fruits are full and thick. .
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