Ecological agricultural circulating system

Abstract

The invention provides an ecological agricultural circulating system. The system comprises a crop planting area, a livestock and poultry breeding area, a biogas project and a greenhouse area. Grains in the crop planting area are used to feed livestock and poultry in the livestock and poultry breeding area; faeces generated by the livestock and poultry enters the biogas project for generating biogas and biogas residues; the biogas is used for household cooking; dry-wet separation is carried out on the biogas residues and cultivation sewage for generating biogas dregs and biogas slurry; the biogas slurry is applied to the greenhouse area as a flush fertilizer; straw in the crop planting area is carbonized to form straw charcoal, biomass fuel gas and a wood vinegar liquid; the straw charcoaland the biogas dregs are mixed to form an organic fertilizer which is the base fertilizer in the greenhouse area; the biomass fuel gas is used as a heat source and a gas fertilizer for the greenhouse;the wood vinegar liquid is used for soil improvement in the greenhouse area as a sterilizing agent; tail vegetable residues generated in the greenhouse area are subjected to fermentation treatment for forming a plant enzyme, and the plant enzyme is applied to the greenhouse area as a flush fertilizer after being diluted. According to the system provided by the invention, heating and fertilizing in the greenhouse area are taken as a center, which is combined with waste discharge of livestock and poultry breeding and grain planting, so that ecological planting, zero pollution and zero dischargeare truly achieved.

Description

technical field [0001] The invention belongs to the technical field of agricultural ecological planting, and in particular relates to an ecological agricultural circulation system. Background technique [0002] Agriculture is the primary industry on which human beings depend for survival. As far as China is concerned, if agriculture is abundant, the foundation will be strong; if farmers are rich, the country will prosper; if agriculture is stable, the society will be safe. Therefore, agriculture has always been highly valued by the country. Especially since the reform and opening up, my country's agriculture has made great progress. It uses less than a tenth of the world's arable land to feed one-fifth of the world's population. Since the 1950s, with the rapid development of my country's economy and the increase of population, the demand for food has increased sharply. In addition to expanding the area of ​​cultivated land and promoting improved varieties, extensive use of a...

AI Technical Summary

Problems solved by technology

At the same time, only a small part of the chemical fertilizers applied to cultivated land is absorbed by plants, and most of them enter the soil and water bodies, causing serious non-point source pollution to the environment

Moreover, the extensive use of agricultural chemicals inevitably pollutes edible agricultural products, and chemicals such as hormones and antibiotics in agricultural products pose a serious threat to human health.

[0003] On the other hand, compared with the world's advanced agriculture, my country's current agriculture is extensive, scattered, and backward in production and management, with a low degree of modernization and serious waste of resources. In addition, the development of poultry and livestock breeding will bring a lot of waste, causing environmental pollution. pollution

Although the use of biogas fermentation, composting and other technologies can slow down the pollution of the livestock breeding industry, it still cannot prevent zero emission and zero pollution of waste

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