Views: 0 Author: Site Editor Publish Time: 2022-05-22 Origin: Site
China has a vast territory, and although the natural conditions, planting methods, and scale of livestock and poultry breeding vary greatly among regions, the utilization of Fertilizers for planting and breeding waste is mainly divided into direct utilization and indirect utilization according to the method of returning to the field.
Here is the content list:
l Direct use
l Indirect use
Direct utilization is a direct and labor-saving utilization method, that is, the waste is directly returned to the field, and the organic waste is slowly decomposed in the soil through the action of microorganisms, and the nutrients in it are released for the crops to absorb and utilize, and the decomposed organic matter and hummus can be improved. Soil structure, fertilize the soil and increase crop yield. However, this method of utilization relies on natural decomposition, which is slow and may have adverse effects on crop growth. For example, straw wastes decompose slowly, and fecal organic matter may damage crop roots and affect crop growth during the natural fermentation process. The most typical method of direct waste Fertilizer utilization is the direct return of crop straws to the field. This method can quickly and massively dispose of the remaining straws in the planting industry and is the most effective way of straw Fertilizer utilization.
The straw direct return technology mainly uses agricultural machinery to pulverize the harvested straw and throw it in the field, then plow and bury it, or directly cover the soil with the pulverized, whole plant and high stubble. The nutrients provided by crop straws account for about 13%~19% of the total nutrients in organic Fertilizers in China and are an important source of organic Fertilizers for agricultural production. However, the direct return of crop straws in China is only 30%~40%, which is far less than that of developed countries’ 60%~70% ratio. Straw returning to the field can not only increase soil organic matter and nutrients, improve soil physical properties and aggregate structure, regulate the supply of soil elements, improve soil microbial and soil enzyme activities, and have the functions of fertilizing the soil, retaining water and drought resistance, and improving yield, but also reducing direct the environmental pollution caused by incineration and the improvement of farmland ecological environment are important measures to promote the recycling of waste resources and the sustainable development of agriculture. The direct return of straw to the field has an important relationship with modern agricultural machinery farming methods and the degree of mechanization. Due to the large latitude span of north and south China, the obvious differences in natural climatic conditions, and the significant regional differences in multiple cropping systems and farming modes, the application of straw returning technology has obvious advantages. The development of agricultural machinery in China is in a period of technological growth, the design process, production, and quality of agricultural machinery are uneven, the integration of agricultural machinery and agronomy is poor, and the agricultural machinery technology for large-scale straw returning to the field is not yet mature.
Indirect utilization is to return the waste to the fields through aerobic composting, perfusion, cultivation, anaerobic fermentation, carbonization, etc., or to produce commercial Fertilizers for utilization. Aerobic composting is a decomposing organic waste by composting and decomposing. It is an important way for Chinese farmers to improve soil fertility for thousands of years, and it is also one of the most common ways to use organic waste in rural areas.
Aerobic composting relies on aerobic bacteria to decompose organic wastes such as straw and livestock manure. During the decomposition process, the temperature is high, which can eliminate some pathogenic bacteria to the greatest extent. Choose drum, vertical, and other aerobic fermentation equipment. With the development of human beings, waste composting has developed from the traditional miniaturization and random composting to the large-scale and equipment-oriented direction, which brings a direct source of organic Fertilizer to agricultural production and is also the main composting method for the production of commercial organic Fertilizers. The nutrients of aerobic composting are relatively balanced, the Fertilizer nutrient release rate is slow, and the Fertilizer effect is long-term, but this method requires a large space and takes a long time to process. In recent years, with the strengthening of environmental protection in China, the composting site and process are strictly controlled. To meet the environmental protection requirements, the composting process has developed in the direction of intelligence, environmental protection, and standardization.
The above is the relevant content about the Fertilizer utilization of waste. If you are interested in Fertilizer, you can contact us. Our website is https://www.sinotainuo.com/. I look forward to your arrival very much and hope to cooperate with you.