Ecological drainage canal construction method

Abstract

The invention provides an ecological drainage canal construction method comprising the steps of flattening the bottom of a soil drainage canal; and growing slope protection plants on the side slops ofthe soil drainage canal, and growing bottom hedgerow plants and bottom cropping strip plants at the bottom of the soil drainage canal. According to the construction method, by flattening the bottom of the soil drainage canal according to a certain depth, an ecological drainage canal with a trapezoidal cross section and a trapezoidal or rectangular longitudinal section is constructed, and the gradient of the both side slops is 45 DEG; the slope protection plants, the bottom hedgerow plants and the bottom cropping strip plants are grown; nitrogen and phosphorus can be intercepted effectively, and the applicability is high; all plants are perennial plants, and can be used for many years after planting in next year, and the landscape effect is good; all plants are tolerant to drought, and applicable for arid regions in Northern China; the growth of worst weeds can be restrained effectively after the ground is covered completely, and the daily maintenance is easy, and the cost is low; andthe construction method is easy to popularize and apply.

Description

Technical field [0001] The invention relates to the field of agricultural drainage and pollution removal, in particular to a method for constructing an ecological drainage ditch. Background technique [0002] The main cause of non-point source pollution of farmland chemical fertilizers is the excessive input of chemical fertilizers and the unreasonable input method and time, which leads to the inability of nutrients to be absorbed and utilized by crops in a timely and effective manner. The excess nutrients are discharged through runoff, leakage, ammonia volatilization, and nitrous oxide emissions. All are lost to the environment, which not only wastes resources, but also causes serious environmental pollution. Today, my country’s arable land is becoming more and more tense, the population continues to expand, and the call for environmental governance is increasing. To ensure food security, ensure the clean production of farmland and the quality of agricultural products, and reali...

AI Technical Summary

Problems solved by technology

The disadvantage is that the cost is high, and nitrogen and phosphorus directly enter the water body without any interception during the drainage process, resulting in eutrophication of the water body

[0008] Therefore, at present, there is a lack of a suitable nitrogen and phosphorus efficient interception ecological drainage ditch with good effect and reasonable price for the farmland in the northern arid area.

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