In today's world, environmental protection, resource recovery and recycling are important research topics in the 21st century. How to use advanced engineering technology to turn the increasingly accumulated organic waste and organic waste into efficient organic fertilizer to return to nature, so as to ensure the quality of human life, has become a major problem we are facing. The unreasonable application of chemical fertilizer for a long time in China has resulted in insufficient application and unbalanced distribution of organic fertilizer, resulting in the imbalance of nutrient proportion in some farmland, resulting in the destruction of farmland ecological environment, soil physical and chemical properties and soil microbial flora to varying degrees, affecting the quality and safety of agricultural products. Therefore, it is of great strategic significance to attach importance to the processing and production of organic fertilizer for the sustainable development of agriculture in China.
1. Realize rational utilization of resources
Each year, hundreds of millions of tons of organic waste are produced, mainly including livestock manure, human manure, crop straw, vegetable and garden waste, urban living organic sludge, meat processing plant waste, cake and other processing organic waste. These wastes can provide nitrogen, phosphorus, potassium, crude organic matter, medium and trace elements. If these organics can be harmless and nutrients can be effectively processed or processed by organic fertilizer machine
to produce organic fertilizer to return to farmland, it can not only improve soil fertility, supplement a large number of plant nutrients, improve the utilization efficiency of waste resources, but also reduce the use of chemical fertilizer.
2. Beneficial to the protection of ecological environment
The disposal or non processing of organic material resources will pose a potential threat to the ecological environment. The manure of livestock and poultry in the farm and the organic waste of urban life are piled up at will without treatment and utilization. The soluble nutrients and organic substances will enter the water body with the runoff of rainfall, polluting the water quality and leading to eutrophication. At the same time, odor substances, nitrogen oxides, nitrogen hydrides and other pollutants released by decomposition of organic substances pollute the atmosphere and affect human health. Scientific processing and rational use of organic fertilizer according to local conditions can reduce the non-point source pollution caused by excessive application of chemicals in farmland and protect the ecological environment.