Ecological water draining ditch

Abstract

The invention provides an ecological drainage ditch, which includes a cement ditch, a plurality of aquatic plant cultivation units are arranged in the cement ditch, each aquatic plant cultivation unit is respectively filled with a plant growth substrate, and emergent plants are cultivated on the plant growth substrate . The invention solves the problems of the existing cement ditches, such as poor ability to intercept and purify nitrogen and phosphorus in farmland drainage, low biodiversity and poor landscape effect, and prolongs the hydraulic retention time on the basis of not destroying the original cement buildings and drainage , intercept nitrogen, phosphorus and other nutrient elements in farmland drainage, comprehensively utilize solid waste as the cultivation substrate of aquatic plants, and can form a certain landscape effect according to the demand, and can be applied to the field of non-point source pollution prevention and agricultural ecological landscape.

Description

technical field [0001] The invention relates to a farmland drainage system, in particular to an ecological drainage ditch. Background technique [0002] Agricultural non-point source pollution caused by irrational application of pesticides and chemical fertilizers is a hot spot in my country's agricultural production. A large number of nutrients are lost and enter rivers and lakes with surface runoff, causing serious eutrophication. Farmland drainage ditches are an important part of farmland water conservancy infrastructure. They can not only discharge floods in a timely manner, adjust the water balance of farmland ecosystems, but also purify the water in farmland drainage through the actions of sediment in the drainage ditch, plant interception and absorption, and microbial degradation. Pollutants, efficient recovery of nitrogen and phosphorus lost by fertilizers with water. Researchers at home and abroad have conducted a lot of research on the environmental effects and ec...

AI Technical Summary

Problems solved by technology

The slope and bottom of the traditional soil ditches are not hardened, and the soil is directly exposed to the water. It is easy to cause soil erosion when encountering heavy rainfall or excessive runoff velocity. Moreover, the number and types of plants in the traditional soil ditch are limited, which is harmful to the water body of the ditch. Nitrogen and phosphorus adsorption capacity is also limited accordingly

The cement ditch has been hardened with cement on the slope of the ditch, and the proportion of ditch applications in agricultural land in my country is constantly expanding. However, plants cannot be planted in the cement ditch, and biodiversity is affected. Therefore, the interception efficiency of nitrogen and phosphorus in the water body is higher. Difference

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