In modern intensive agriculture, fertilization is not only for gaining crop yields and incomes, but also for fertilizing soils to improve farmland quality and achieve high yield, high quality, and environmentally friendly sustainable development. Therefore, in recent years, there has been a trend of attaching importance to organic fertilizers and chemical fertilizers. The advantage of organic fertilizer is that there are many types of nutrients, including a large number of trace elements of various nutrients, and a large amount of active substances such as organics and vitamins. Applying organic manure all year round can make soil organic matter renew or improve, improve soil physical and chemical properties, and obviously improve soil quality. However, its disadvantage is that nutrient content is low, and the nutrient form is mainly organic. It needs to be gradually degraded by soil microorganisms before it can be transformed into a form that plants can absorb and use. Therefore, nutrient supply intensity is low, and it is difficult to meet the needs of high-yield crops during the fast growing period. In the application, it is necessary to take into account the characteristics of many types of organic fertilizers and different characteristics, not only with each other but also with the appropriate amount of fertilizer. In terms of waste produced by livestock and poultry farming, the amount of such organic fertilizers is very large and grows rapidly with the rapid development of livestock and poultry products. If we do not make great efforts to scientifically treat livestock and poultry excrement. The application will not only result in the loss of large quantities of cheap and attractive fertilizer resources for vegetables, fruit trees, tobacco, tea, potatoes and other economic crops, but will also reduce the output and quality of such agricultural products, which in turn will cause deterioration of the environment in rural areas and will not be conducive to the new Rural construction. Therefore, first and foremost, it is necessary to fully develop and reasonably apply the source of excrement organic fertilizer in the production of economic crops. As the main feature of organic manure is that the nutrient content is higher than that of other organic fertilizers, the carbon/nitrogen ratio (C/N) range is relatively narrow, generally between 6 and 10. For this reason, it is necessary to add partially crushed straw. Mixed organic fertilizer application. This will not only achieve the cleanliness of the rural environment but also ensure the quality and safety of fruits and vegetables. The application of manure-type organic fertilizer can partially replace the supply of nitrogen and phosphorus nutrients for crops by chemical fertilizers, thereby reducing the application rate of chemical fertilizers and increasing the utilization rate of chemical fertilizers. In addition to the economic crops, we must also correct a tendency that the grain crops will only rely on chemical fertilizers instead of organic fertilizers for field production. If this continues, not only will grain production continue to grow steadily, but agricultural non-point source pollution will also increase. When recommending organic fertilizers to a large number of farmland, the type, source, and composition of organic fertilizers should be paid attention first. Daejeon organic fertilizers must focus on returning crop straws to cropland, and appropriately incorporate chemical nitrogen fertilizers to adjust the ratio of carbon and nitrogen to promote the decomposition of organic matter. Soil microbial community activity and optimization. If a large amount of manure-type organic fertilizer is applied in Daejeon, not only the source of the fertilizer is difficult to ensure, but also the organic matter of the excreta and organic fertilizer has little effect on the improvement of soil organic matter in the field and fertilization, and the main effect is to promote the circulation and renewal of organic matter. Urinary organic fertilizers should be used mainly in the production of economic crops, especially new vegetable plots, new orchards, and so on. In the modern intensive crop cultivation system, the rational use of organic fertilizer should pay attention to: First, raw manure cannot be applied and must be decomposed and converted into a composting process. To make a large amount of scattered raw urine and urine piles into qualified organic fertilizers, one needs technology, and the other is labor. The current lack of strong labor force in rural areas, after the release of raw manure, it is often accumulated on the roadside of the village for several months or even six months, allowing it to rain and sunshine, resulting in ammonia volatilization and loss of nutrient and nitrogen and potassium nutrients of manure-type fertilizers. Spread. When it comes to spring production of the fertilizer, it goes straight to the ground. This is an unscientific practice and this phenomenon should change. Second, apply it in moderation. With regard to the control of manure consumption, EU countries have proposed regulations for controlled use. In the UK, for example, the application rate is set at 170 tons (nitrogen) per hectare. However, in recent years, in the production of vegetables and orchards in some parts of China, the average application amount of manure fertilizer per acre has reached more than 2 tons, and some vegetable fields have reached 10 tons. This blind and generally high amount of manure has caused vegetable fields. Nutrient accumulation and water pollution. Because manure is rich in organic nitrogen, the final product of its decomposition is also nitrate. It also causes pollution to water bodies and the environment. Manure may also have problems such as excessive heavy metals. Therefore, in the production of high-input intensive economic crops in China, the technique of soil testing and formula fertilization should be applied, and the amount of organic fertilizer and chemical fertilizer should be standardized. Promote organic fertilizer and chemical fertilizer application. It is preferable that the proportion of suitable nitrogen supply is half of each. For the fertilization of high-input and high-output economic crops, attention should be paid to the controlled application of manure, which is scientific and reasonable. In the increasingly developed aquaculture industry, excessive output of manure should be applied to the fields of food crops, which will be conducive to the sustainable development of China's grain production and reduce harmful gas emissions from some farmland. Thirdly, in addition to fermentative transformation, the production of manure needs to adjust the ratio of carbon to nitrogen, add the composition of straw, widen the ratio of carbon to nitrogen, and increase the function of soil manure. In short, in the high-yielding system of crops, the application of organic fertilizer is only reasonable and sustainable, and those with a one-sided bias are not conducive to high-quality and safe production. It should be said that the combined application of organic fertilizer and chemical fertilizer is a scientific fertilization strategy. SYNTHETIC PROTECTIVE GLOVES SYNTHETIC PROTECTIVE GLOVES Guangzhou Aikangli Medical Technology Co., Ltd. , https://www.aikanli.com
Rational application of organic fertilizer can only be sustainable