The way to choose straw to return to the farm should be based on local conditions
At present, there are various forms of straw returning, which can be divided into five categories: straw crushed and pressed back to the field, straw mulching, field recycling, land recycling, incineration and returning to land. These five forms have their advantages and disadvantages. 1. Straw crushing and turning to pressure This field of returning straw to the field is to mechanize crushing and cultivating straw after crops are harvested. The land will be turned directly into the soil. This can fully retain the nutrients of the straw in the soil, but there are also deficiencies, mainly as follows: 1. Due to excessive or uneven straw returning, it is prone to the contradiction between soil microorganisms (that is, straw-converting microorganisms) and crop seedlings competing for nutrients, and even yellow seedlings, dead seedlings, and production cuts. Therefore, in general, straw crushed and returned to land per 667 square meters should not exceed 300 kilograms and not more than 500 kilograms at most, otherwise it will affect the decomposition rate of straw in soil and crop yield. Therefore, when the straw is directly returned to the field, it is generally appropriate to add some nitrogenous fertilizers and phosphorus deficiency fertilizers. 2. When the straw is returned to the field, the soil becomes too loose, the proportion of pore size is uneven, and the large pores are too much. As a result, the wind can't be closely contacted with the soil and seeds, affecting the germination and growth of the seeds, making the wheat not firmly rooted, or even Hanging roots appear. The measure that we should take is timely irrigation, or rolling, so that the soil and seeds are in close contact and germinate normally. Or increase the fineness of the smash, preferably to less than 3.5 cm. 3, prone to pests and diseases. Some pests and diseases, such as eggs and bacteria in the straw, cannot be killed during the direct smashing of the straw, and remain in the soil after returning to the field. Diseases and pests occur directly or the overwintering occurs in the coming winter. Therefore, effective measures should be taken to deal with it. Second, straw mulching back to the field this way is to directly cover the surface of the straw after crushed. This can reduce the evaporation of soil moisture, to achieve the purpose of conservation, increase soil organic matter after rot. However, this will cause inconvenience to irrigation, waste of water resources, and serious impact on sowing. This form is suitable for mechanized on-demand and is also more suitable for arid regions. Third, stacking and returning to the field is to make the crop stalk full of high-temperature decomposition, the application of soil, stacking methods are some through the livestock circle, some with biological bacteria, water and so on. This facilitates the absorption of plant material. However, during the maturation process of straw, a certain amount of nitrogen is lost. This form is time-consuming, time-consuming and occupies land, and now farmers generally use very little. Incineration of straw returned to the field by burning, the active ingredient into exhaust gas discharged into the air, a lot of energy is wasted, the remaining potassium, calcium, inorganic salts and trace elements can be used by plants, and kill the eggs in the combustion process , pathogens and grass. However, incineration has caused waste of resources, environmental pollution, and ecological damage. At the same time, it has affected traffic and people's lives, and it has become a major public hazard. Resolute measures must be taken to prohibit incineration. Fifth, returning to the abdomen This form of straw is used as feed, in the animal's abdomen by digesting and absorbing part of the nutrients, such as sugar, protein, cellulose and other nutrients, the rest becomes feces, into the soil, fertility and fertility . The nutrient portion that straw is absorbed by animals is effectively converted to meat, milk, etc., which is eaten by people and increased in utilization rate. This method is the most scientific and ecological, and should be promoted most. There are many benefits from returning straw, but there are also disadvantages. Whether straw shall be returned to the field or not and which way to return to land should be determined according to the actual conditions of the local, local and local blocks, and must not be applied in one go. In addition, if local animal husbandry develops well and there is a lack of forage, it is not appropriate to promote and implement straw returning measures. Because straw is a good feed for livestock, using straw to feed livestock can greatly reduce feed costs and make livestock safe for winter. Promote the development of animal husbandry. Face Mask,Disposable Face Masks,Protect Face Mask,Medical Mask Jiangyin Huashi Medical Equipment Co.,Ltd , https://www.medicalwellcare.com