A slope-type saline-alkali land rainwater washing system

Abstract

The present invention relates to a rain-collecting and salt-washing system on a sloping saline-alkali land, which comprises a rain-collecting platform arranged perpendicular to the drainage slope and a rain-collecting ditch located on the rain-collecting platform. Geotextiles are laid on the sides and bottom of the rain-collecting ditch. The lower layer of the rain-collecting ditch is paved with a gravel layer, the upper layer of the rain-collecting ditch is paved with a yellow sand layer, and the surface layer of the rain-collecting ditch is paved with a lawn area. The invention has the beneficial effects of convenient and fast construction, obvious effect and low cost. The method can effectively intercept the rainwater converging on the upper slope, overcome the problem that the rainwater is difficult to infiltrate in the concrete, brick and mortar block stone intercepting ditch, and at the same time avoid It solves the problem that the soil ditch is not resistant to rainwater erosion and collapse, and effectively solves the problem that rainwater is difficult to infiltrate and wash salt in slope-type saline-alkali land. At the same time, the landscape effect is guaranteed by laying turf.

Description

technical field [0001] The invention relates to the fields of saline-alkali land improvement and environmental protection, in particular to a rain-washing and salt-collecting structure system for slope-type saline-alkali land, that is, a rain-washing salt-collecting system for slope-type saline-alkali land. Background technique [0002] Land salinization is a major problem facing the world now. The area of ​​saline-alkali land in the world is about 1 billion hm2, while the degree of saline-alkali land in my country is more serious, about 100 million hm2, mainly distributed in northwest, north, northeast and coastal areas. Generally, saline-alkali land cannot be used for agricultural production, and even landscaping crops are difficult to survive, and its ecological function will gradually deteriorate, which greatly restricts the land function. [0003] At present, the commonly used saline-alkali land improvement technologies mainly include ① physical improvement: land leveli...

AI Technical Summary

Problems solved by technology

However, rainwater on sloping land is easy to form surface runoff and drain away, which is not conducive to the infiltration and washing of salt under rainwater.

Although the commonly used concrete, brick and mortar block stone intercepting ditches can effectively intercept rainwater, they are not conducive to seepage of rainwater; in addition, if soil ditches are set directly on the slope, they are not only easy to collapse, but also not resistant to rainwater erosion

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