Control method for watershed agriculture non-point source pollution

Abstract

The invention discloses a control method for watershed agriculture non-point source pollution. The method comprises the following steps: A, establishing an ecological ditch: constructing the ecological ditch in an area to be treated according to the conditions of a water system to be treated, wherein the ecological ditch includes water blocking bars and / or water introducing openings; B, performingafforestation moisturizing and constructing a biological pond: performing moisturizing by adopting hole-shaped land preparation, a mixed mode and afforestation for cultivated land that still cannot introduce water after the step A, performing moisturizing by adopting whole-cultivation land preparation, a heightening and thickening manner of field ridges and a seeding while land preparation mode for cultivated land that can introduce water after the step A, and enabling the moisturizing area to be constructed into the biological pond; and C, performing ecological restoration along a river: constructing a plant buffer zone in a road along a river in the area to be treated by adopting a mixed mode, and increasing a water blocking depth beside a water field and the road along the river, wherein an operation sequence of the step C and the step A or the step B can be arbitrarily interchanged. Compared with the prior art, the method disclosed by the invention saves a lot of expense, can reduce a concentration of pollutants to the uttermost extent, and has stronger applicability and development prospects.

Description

technical field [0001] The invention relates to the field of environmental engineering, in particular to a method for controlling watershed agricultural non-point source pollution. Background technique [0002] With the development of our country's economy, environmental protection problems are becoming more and more serious. In the past, people dealt with point source pollution. However, with the deepening of people's understanding of environmental problems, the problem of non-point source pollution has gradually attracted people's attention. Agricultural non-point source pollution refers to the non-point source pollution formed when pollutants in farmland enter water bodies through farmland surface runoff, soil inflow, farmland drainage and underground seepage during precipitation or irrigation during agricultural production activities. In recent years, the excessive use of chemical fertilizers and pesticides in China, and the domestic sewage in rural scattered residential...

AI Technical Summary

Problems solved by technology

However, even if the amount of fertilizer application can be controlled to a certain extent, the treatment and control of existing non-point source pollution is still a top priority in the process of completely changing the ecological environment of river basins and promoting sustainable social and economic development.

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