Fine soil preparation for sticky corn planting techniques (1) The depth of the bottom fertilizer can reach 25 cm or more and is easily absorbed by the roots of the crop, thereby improving the utilization rate of the fertilizer. At the same time, after the deep application of the farmyard fertilizer, it can be decomposed in the deep layer of the soil, and activate the deep soil microorganisms, which is obvious to the improved soil. effect. (2) The autumn fertilizer is beneficial to protect the soil moisture. After the autumn fertilizer is applied, the soil porosity is increased, the water holding capacity in the field is increased, and the winter and spring are good. (3) It is conducive to the preservation of seedlings. Because of the application of fertilizer in autumn, most of the chemical fertilizers are turned into the deep and middle layers of the soil. The amount of surface chemical fertilizer is reduced correspondingly during spring sowing, the concentration of chemical fertilizer around the seeds is reduced, and the seed emergence rate is increased, thus contributing to the preservation of seedlings. . (4) Enhance the lodging resistance of crops, the root development of crops has a strong fertility, and the combination of deep base fertilizer in autumn and shallow base fertilizer before spring sowing makes the fertilizer evenly distributed in the middle and lower layers of the soil, which is beneficial to the vertical and horizontal crops. stretch. The root system is developed, the water absorption and fertilizer absorption capacity is strong, the crop resistance to lodging and drought resistance is significantly enhanced, and at the same time, the early defermentation and premature aging of the crop is effectively prevented, and the effect of increasing yield and income is significant. (5) Alleviate the time of the farm, use the deep floor fertilizer in the autumn, and relieve the labor shortage in the spring. Disclaimer: Some articles on this website are transferred from the Internet. If legal rights of third parties are involved, please inform this website. phone Vitamins are a kind of trace organic substances that humans and animals must obtain from food in order to maintain normal physiological functions. They play an important role in the growth, metabolism, and development of the human body. In the body, this kind of substance can neither be a raw material for body tissue nor a source of energy, but a kind of regulating substance, which plays an important role in material metabolism. Vitamin C,vitamin b3,vitamin raw material Xi'an Natural Field Bio-Technique Co., Ltd. , https://www.naturalnf.com
From the point of view of chemical structure, various vitamins are very different or even unrelated. Therefore, vitamins are usually classified according to their physical properties. They can be divided into fat-soluble vitamins (such as vitamin A, D, E, K, etc.) and water-soluble vitamins ( Such as vitamin C, vitamin B1, B2, B6, B12, pantothenic acid, PP, biotin, folic acid, choline, etc.). Water-soluble vitamins are easily soluble in water but not soluble in organic solvents. They are stored in the body after absorption. Excessive amounts are mostly eliminated in the urine; fat-soluble vitamins are easily soluble in organic solvents but not in water. They can be absorbed by the body with fat and stored in the body, and the excretion rate is not high.
From the perspective of obtaining methods, vitamins can be divided into natural products and chemical synthetic products. Because natural vitamins are limited by raw materials and extraction technology, their yields are low, and their prices are high. Therefore, chemical synthesis takes the lead, accounting for about 80% of the total vitamin output. Among the various segments of the vitamin industry, vitamin B, vitamin E, vitamin C and vitamin A have the largest market shares, 33%, 30%, 21% and 13% respectively. Other vitamins have a smaller market share, accounting for only 3%.