A quasi-natural ecological farmland construction method

Abstract

The invention belongs to the field of agricultural environmental protection, and particularly relates to a method for establishing nature-simulated ecological farmland. According to the method, the farmland, trenches, a tractor-ploughing road, farmland buffer zones and a buffer purification pool are established; on the basis of a farmland production function, a farmland ecological function is further exerted, the farmland is utilized for consumption and sinks of environmental nitrogen and phosphorus; through soil carbon sinks on the farmland and biodiversity, non-point source pollution to the farmland is controlled. Through adoption of the method, the functions of the farmland, farmland ridges, the trenches, the tractor-ploughing road and the buffer purification pool in a whole compound system are optimized; the farmland biodiversity is improved, and a farmland planting and breeding compound function and a pollution source control function are extended; farmland ridge buffering, beautifying and economic functions are added, and the non-point source pollution self-purification capability of the farmland is enhanced; the trenches are hardened through ecologicalization, and nitrogen and phosphorus nutrients can be recycled; interception and purification of the non-point source pollution to the farmland are regulated and controlled; an ecological corridor is established, farmland landscapes are beautified, and the ecological value of the farmland is improved.

Description

technical field [0001] The invention belongs to the field of agricultural environmental protection, and in particular relates to a method for constructing a pseudo-natural ecological farmland. Background technique [0002] Among the surface water pollutants in my country, non-point source pollution accounts for a large proportion. More than 50% of nitrogen and more than 30% of phosphorus in lakes come from agricultural non-point source pollution. (Feng Guolu, Yang Renbin. Nitrogen and phosphorus dynamic characteristics and emission reduction potential in paddy field water under different farming modes. Acta Ecologica Sinica, 2011, 31(15): 4236) At present, the non-point source pollution caused by the paddy and dry rotation mode of farmland is becoming more and more serious. Nitrogen and phosphorus fertilizers Excessive input, extensive water management during floods and droughts, low water and nutrient recycling rate, and a single planting structure have resulted in fragile ...

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Problems solved by technology

(Feng Guolu, Yang Renbin. Nitrogen and phosphorus dynamic characteristics and emission reduction potential in paddy field water under different farming modes. Acta Ecologica Sinica, 2011, 31(15): 4236) At present, the non-point source pollution caused by the paddy and dry rotation mode of farmland is becoming more and more serious. Nitrogen and phosphorus fertilizers Excessive input, extensive water management in alternating periods of floods and droughts, low water and nutrient recycling rates, and a single planting structure have resulted in fragile farmland ecosystems, resulting in degradation of farmland ecological self-purification functions, etc.

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