Seepage-promoting and emission-reducing method for saline-alkali soil greening

A technology of saline-alkali land and greening soil, which is applied in the direction of site preparation methods, botanical equipment and methods, and planting substrates, and can solve problems such as weak soil permeability, turbidity, and water quality

Inactive Publication Date: 2020-06-12
NORTH CHINA MUNICIPAL ENG DESIGN & RES INST
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Problems solved by technology

[0005] The purpose of the present invention is to overcome the problems of weak water permeability of greening soil in saline-alkali areas, turbidity and water quality of rainwater or green land irrigation water, and provide a method for promoting infiltration and emission reduction of greening soil in saline-alkali areas, which can not only promote water infiltration It can also ensure the water quality of soil leaching water, which is of great practical significance to promote the construction of sponge cities in saline-alkaline areas

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  • Seepage-promoting and emission-reducing method for saline-alkali soil greening

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[0022] The technical solutions and specific engineering practices of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0023] Such as figure 1 and figure 2 As shown, a saline-alkali land greening soil promoting infiltration and emission reduction method is to spread a filler layer 2, a straw isolation layer 31, a fine sand isolation layer 32 and a soil layer 4 sequentially above the salt discharge layer 1 of a saline-alkali land greening conventional project.

[0024] The method of salt discharge in conventional saline-alkali landscaping projects is to excavate the construction land to the design elevation, transport the original saline soil 6, level the plain soil, excavate the salt drainage ditch, and compact the working face, then lay a certain thickness of gravel layer according to the design requirements , and the perforated drainage pipe network is embedded in it to form the salt discharge layer 1 of the project. ...

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Abstract

A seepage-promoting and emission-reducing method for saline-alkali soil greening comprises the step of sequentially arranging a packing layer, an isolation layer and a soil layer above a conventionalengineering salt discharging layer for saline-alkali soil greening; the packing layer is formed by mixing zeolite, vermiculite and fine sand, the isolation layer is composed of a straw layer and a fine sand layer from bottom to top, and the soil layer is formed by mixing straws, fine sand, zeolite, vermiculite and planting soil. The method not only can promote water infiltration, but also can guarantee the water quality of soil leaching water, and has great practical significance in promoting sponge city construction in saline-alkali areas.

Description

technical field [0001] The invention belongs to the technical field of urban water environment treatment, and in particular relates to a method for promoting infiltration and emission reduction of saline-alkali land greening soil. Background technique [0002] In recent years, the sponge city planning and construction projects have continued to be promoted, the sponge effect has been continuously improved, and the concept of the sponge city has become more and more popular. At present, it is already in a critical period from exploring the path and summarizing the experience of pilot projects to advancing systematically and globally. The serious soil salinization and extremely harsh plant growth conditions in saline-alkali areas have become one of the important constraints to promote the construction of sponge cities in this area, especially the construction of green space ecological infrastructure. [0003] Although people have carried out more than 100 years of practical ex...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01B79/00A01G24/13A01G24/15A01G24/12A01G24/22A01G24/28A01G24/10
CPCA01B79/00A01G24/13A01G24/15A01G24/12A01G24/22A01G24/28A01G24/10
Inventor 葛铜岗孙永利尚巍王金丽穆莹郑华清
Owner NORTH CHINA MUNICIPAL ENG DESIGN & RES INST
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