Planting green manure can increase soil organic matter content, improve soil structure and physicochemical properties, and improve the ability of soil to regulate water, fertilizer, gas and heat, and form a good crop growth environment. To promote green manure cultivation techniques, mainly use fallow fields and winter free fields for crop rotation or intercropping of green manure and grain crops. By manipulating green manures, the soil fertility will be maintained and improved.
Increased production and efficiency: It not only improves fertility, but also increases production. It also protects the environment. Live green manure yields 3000-4500 kilograms of fresh grass per mu, equivalent to 1000-1500 kilograms of hay. According to calculations, over 2000 kg of fresh grass can increase production of 20-30 kg of wheat per mu and increase yield of 50-70 kg of corn. The technical points are as follows:
1. Rotation of green manure returning technology. The main types of green manures are legumes, which include alfalfa, clover, peas, broad beans, sesbania, chalcazine, alfalfa, soybeans, mung beans, etc. Non-legume green manure mainly includes corn, rape, and sunflower. Before planting, plant seeds for 1-2 days before sowing, then use 10% salt solution for watering
After floating pods, sclerotia and impurities, immediately rinse with water to dry. The green man-made seed coat is hard, and it can be used to manually coat the seed coat. A large number of seeds are used to grind the seed coat with a rice mill to promote good seedling after sowing. Then boiled water can be used, that is, the seeds into boiling water and stir for 1 minute, quickly remove and put into cold water, and then remove and sow. The former is dominated by wheat and corn. Usually 10 cm soil temperature ≥ 10 °C can be sowing, planting amount of grass seedlings after treatment 1.5-2 kg / acre, 苜蓿 0.5-1 kg / acre, sunflower 1.7-2 kg / acre. Sowing methods can be used for sowing, drilling and sowing. Sowing depth 1-20 cm. General urea is about 10 kg/mu and diammonium phosphate is 10-20 kg/mu. As the number of irrigation increases, the number of harvests also increases accordingly, and irrigation is generally performed 3-4 times throughout the growing period. Live green manure has a long growing time and can be harvested 2-3 times in the whole growth period. Different types of green manure are also different in their biological output. Generally, 1500-2000 kilograms/mu of hay are harvested throughout the year. At the time of harvesting, uniform harvesting is performed using agricultural implements. When harvesting, 20 cm must be left to ensure the growth of the lower jaw.
Intercropping technology for returning green manure. The intercropping green manure mainly consists of leguminous plants. The legume green manure has biological nitrogen fixation and can appropriately reduce the amount of nitrogen fertilizer applied to the crop. The non-legume green manure has a long growing period, the benefit is not obvious, and the plant is tall and unfavorable. Intercropping, the current promotion is more intercropping soybeans for corn, cotton intercropping green beans, oil sunflower nest beans (season beans) and so on. Closely planted and seeded crops (such as wheat) are interplanted with green manure, which is generally carried out in a wide and narrow manner. High-cultivated sowing seed crops (such as corn) are usually intercropping with interplanting green manure or high-stalk crops as legumes of legumes. The seeding rate of the main crop or the intercropping crop should be less than the sowing volume of the sowing single cropping in the same period. The intercropping green manure is different from the positive manure green manure, and the intercropping green manure makes full use of the seeding space of the main crop and the harvest time of the main crop. After the main crop is harvested, the intercropping green manure is in the seedling stage, and the water is eliminated due to the elimination of the field closure. After the massive growth of green manure, the growth period of green manure was shortened and higher biological yield was obtained. It is generally harvested once a year (two times in individual areas), and the agricultural machinery is used to carry out unified overturning at the time of harvest. The depth of overturning is generally 10-20 cm. To ensure that leaves and leaves are not exposed as well, due to luxuriant foliage when rolling, the steps of first suppressing, then chopping and then rolling can be used. Water should be promptly watered after the pressure is turned on, in conjunction with the application of urea and straw decay agent, to promote green manure maturity.
3. Green fertilizer rape field return technology. Rapeseed is a cool and cool crop, and its heat requirement is not high. Acid, alkali, and neutral soils can be planted. Therefore, rapeseed has the possibility of wide distribution in the region. The green rapeseed is usually sown in late July to early August when there is sufficient rainfall (a rainfall above 50 mm). It fully utilizes the characteristics of good soil moisture in the rainy season, and immediately spreads after sufficient rainfall to prevent the surface soil from having low water content. Emergence. To broadcast rapeseed in corn fields, foxtail fields, cotton fields, etc., local conditions should be used to select high-quality, high-yield and anti-resistant varieties suitable for local cultivation. Spreading 1-1.5 kilograms of rapeseed seeds per acre, when the rape is sown and drought-free, there is a condition for irrigation to ensure full seedlings. There are three kinds of rapeseed greening treatment methods. One is spring rapeseed greening in spring in late spring in spring to make green manure in cotton fields; the other is in the middle and late May of summer, rapeseed root is used as corn (millet) green manure, and the third is autumn September. In the second half of the year, rapeseed green body was directly overturned and used for autumn sowing green manure. Harvest should strive to achieve "a high, four light", that is, "high to stay, light, light, light, light," and should not be stacked in the field, drying, to prevent cracking corners. Pay attention to the prevention and treatment of leaf-feeding cabbage caterpillars, cabbage white butterfly, diamondback moth, rape leaf miner and other pests.
L-serine, as a basic amino acid of protein, is widely used in medicine, food, cosmetics and other industries. At present, the global market demand for L-serine is 10000t / A. L-serine is a non essential amino acid, which is an important precursor involved in the synthesis of intracellular biological substances such as purine, pyrimidine and phospholipid. L-serine is a raw material for compound amino acid infusion, and can also be used as a raw material for light chemical industry . In addition, L-serine is widely used in advanced cosmetics at home and abroad because of its special wettability and moisture retention
D-serine is one of the most important D-type amino acids in mammals, which is about 1 / 3 of the total free serine. It has been found that high concentration of D-serine exists in the higher center of higher animals, including human beings, and it plays an important role in neurotransmitter. It is found that D-serine plays an important role in the corpus cavernosum and lower esophageal sphincter of mice.
L-Cystine Powder,L-Serine Powder,L-Serine Manufacture,L-Cystine Manufacture
Xi'an Tian Guangyuan Biotech Co., Ltd. , https://www.tgybiotech.com