Correct selection and purchase of organic fertilizer

Organic fertilizer can increase the content of soil organic matter and improve soil physical and chemical properties. It can increase the ventilation, permeability and water storage of the soil, improve the root growth environment, and enhance the water and fertilizer conservation capacity of the soil. Which elements provided by organic fertilizers cannot be provided by chemical fertilizers? Organic fertilizer provides soil with a large number of organic nutrients and active substances, such as amino acids, DNA, RNA, humic acid, sugars and nucleic acid degradation products, which can be directly absorbed by crops and stimulate root growth. Among them, organic fertilizer contains a large number of microorganisms, which can accelerate the decomposition and circulation of organic nutrients in soil. It is said that organic fertilizer can improve the quality of products, what are the specific functions? Large amounts of chemical fertilizers or improper nutrient distribution ratio will lead to a decline in the quality of agricultural products (8.30,0.06,0.73%), while the combined application of organic fertilizers and chemical fertilizers can not only increase the content of protein and amino acids in crops, but also decrease the content of nitrate in vegetables and increase the content of vitamin C. The increase of amino acid content in plants contributes to the drought resistance of plants, thus enhancing the resistance of plants to stress and diseases and insect pests. To this end, farmers in the purchase of organic fertilizer should pay attention to the following three aspects: look at the raw materials to know whether the raw materials used in the products are of high quality. At present, the better organic raw materials used by organic fertilizer manufacturers are soybean meal, sesame meal, sugar dregs, cassava dregs, bacterial protein, amino acids, humic acid, tobacco powder, etc., and some calcareous raw materials such as bone powder and shell powder are added. Increasing calcium content can significantly improve bitter acne disease and water heart disease of fruit trees. To see whether the proportion of microbial strains has a comprehensive enzyme system and high enzyme activity, the enzyme activities secreted by cellulase, xylanase, polygalacturonase and polygalactose lyase can meet the requirements of industrial strains and have strong tolerance. Through the addition of excellent microbial agents, the ripening period can be greatly shortened and the ripening effect can be improved. To see whether the production line of the factory is strict or not, the production process of organic fertilizer includes ingredients → ripening, → granulation, → cooling, → sieving, → packaging, among which the maturity is very important. Good products have high maturity and long-lasting fertilizer effect; insufficient maturity can easily cause crops to burn seedlings.