Comprehensive utilization of crop stalks mainly has five ways: First, as agricultural fertilizer; Second, as feed; Third, as a new energy source in rural areas; Fourth, as industrial raw materials; Fifth, as a base material. 1, straw returned to the field. (1) Effect. Crop straw returning is an effective way to supplement and balance soil nutrients and improve soil, and it is one of the basic measures for the construction of high-yield fields. After the straw is returned to the farm, the average yield increase per mu is above 10%. (2) Disadvantages. The biggest problem with straw returning is that it is difficult to plough straw pears into the soil. Even if the straw is successfully plowed into the soil, problems may arise in the formation of straw strands in the furrow, ie, the decomposition cannot be carried out at a sufficient rate and the surface will be exposed on the next tillage. In addition, the straw strands in the furrows will also hinder the growth of the roots of the crop to deeper layers of the soil. (3) straw returning method includes: 1 straw covering or smashing directly to the field; 2 using high-temperature fermentation principle to carry straw straw to return land; 3 straw raising livestock, back to the field; 4 rapid decay of rot using rot cleaning agent , Add a certain amount of biological agents and appropriate amount of nitrogen fertilizer and water in the straw, and then high temperature stacking, straw maturity time can be 15 to 20 days earlier. Practice has proved that the mechanized crushing of straw is the main technical measure and means of comprehensive utilization of straw. 2, straw feed. (1) Straw is rich in non-starch macromolecules such as cellulose, lignin, and hemicellulose. As roughage has low nutritional value, it must be processed. Treatment methods include physical methods, chemical methods, and microbial fermentation methods. The physical and chemical treatment of straw, its palatability and nutritional value have greatly improved, but still can not be used by monogastric animals. Straw is only fermented by microorganisms. Through the degradation of special enzymes produced by microbial metabolism, the macromolecular substances such as cellulose, lignin, and hemicellulose are decomposed into low-molecular monosaccharides or oligosaccharides, so that the nutritional value can be improved. Utilization rate, feed rate, feed speed, enhanced mouthfeel, increased feed intake. Such as bio-organic fertilizer, straw can be used as a culture soil, with some feed bacteria culture, as a fertilizer for flowers and vegetables. (2) The main processing technologies of straw feed mainly include: 1 direct smash feeding technology; 2 green storage feed mechanization technology; 3 straw microbial fermentation technology; 4 straw high efficiency bio-protein full price feed technology; 5 straw ammoniation technology; 6 straw Thermal spray technology. 3, straw energy. (1) Biomass is the fourth largest energy source after coal, oil, and natural gas, accounting for 14% of the world's total energy consumption. China's annual crop straw resources account for nearly half of the biomass energy resources. There are thermal power plants built in many counties in Anhui Province, mainly invested by Wuhan Kaidi Power Company. (2) The main way to transform crop straw energy is straw gasification. In addition to straw gasification, straw can also be used to process briquetting fuel and make gas. 4, building materials, light industry and textile raw materials. Straw is an efficient, long-term raw material for light industry, textiles, and building materials. It can partially replace bricks, wood, and other materials, and can also effectively protect cultivated land and forest resources. Straw wall panels are superior in heat preservation, decoration, and durability. Many developed countries have widely used "straw boards" as substitutes for wood boards and ceramic tiles in the construction industry. In addition, rayon and rayon can be manufactured through technical processing of processed straw, furfural, caramel, wine and xylitol, processed fiberboard, and the like. 5, straw matrix. The use of straw as an edible fungus base is a food-related technology. Edible fungus has high nutritional and medicinal value. Using straw as a production substrate greatly increases the source of raw materials for producing edible fungi and reduces production costs. At present, the use of straw to produce Pleurotus ostreatus, shiitake mushrooms, mushroom, coprinus comatus and other technologies has matured, but there are problems with higher technical requirements. The yield of edible fungi produced from corn stalks and wheat stalks is low. The wrist can be said to be a very important but fragile joint in our body, but many people do not pay attention to the protection of the wrist in daily training.
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If we want to protect our wrists during training, we need to use wrist protectors. Wearing wrist protectors correctly can protect us from the risk of injury during training. For example, if the weight of the bench press is too large, it will cause excessive back pressure of the palm, which will easily lead to arthritis and other problems in the long run. The use of wrist protectors will actually help the wrist to reduce this force, To protect your wrist.
There is also a standard to determine whether the wrist guard is correctly worn. It is to see whether your hand can move freely as normal after wearing the wrist guard. Generally speaking, after correctly wearing the wrist guard, the flexibility of the wrist will be reduced, so as to better protect the wrist.