Greening dust suppression method for bare severe saline-alkaline soil

A saline-alkali soil and green-covering technology, which is applied in the direction of soil preparation methods, botanical equipment and methods, and planting substrates, can solve the problems of difficult ecological management of exposed severe saline-alkali land, and achieve the goal of requiring no maintenance investment, protecting the environment, and improving resource utilization. Effect

Inactive Publication Date: 2018-06-29
天津海林环境修复有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of this, the present invention aims to propose a method of greening and dust suppression on exposed heavily saline-alkali land, especially a low-cost greening ...

Method used

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  • Greening dust suppression method for bare severe saline-alkaline soil
  • Greening dust suppression method for bare severe saline-alkaline soil
  • Greening dust suppression method for bare severe saline-alkaline soil

Examples

Experimental program
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Effect test

Embodiment 1

[0038] Both Example 1 and Comparative Example 1-2 are located at Article 5 of District D, Hailin Ecological Park, Tianjin Lingang Industrial Zone. The area of ​​Example 1 is 4800 square meters, and the area of ​​Comparative Examples 1-2 is 100 square meters. The soil is dredged fill.

[0039] Investigation and sampling of bare saline-alkali land 1 were conducted to analyze the soil salt content and pH. The results are shown in Table 1.

[0040] Table 1 Soil properties in Lingang test area

[0041]

[0042] Example 1

[0043] The specific implementation steps are as follows: Combining the requirements of soil salt content and pH, and low-cost coverage of bare land, select the planting variety as Suaeda, the substrate is Novo fertilizer, and the substrate thickness is 10cm. Level the site, pave the substrate 2, and the surrounding border files figure 1 As shown, the ridge 4 is formed, watered until the substrate 2 is poured thoroughly, and the seeds are evenly sprinkled on the substrat...

Embodiment 2

[0052] The specific implementation steps are as follows: Combining the requirements of soil salt content and pH, and low-cost coverage of bare land, select the planting variety as Sphaerocarpa, the substrate is coarse sand, and the substrate thickness is 20cm. Level the site, pave the substrate, enclose the border, water until the substrate is thoroughly poured, evenly insert the sedum saccharum on the substrate, build a shading net, and remove the shading net after the first new leaf is grown. This example The middle shade net is a black, 3-needle shade net, and the shading rate is about 50%-60%. The cuttings in mid-June 2017 had a survival rate of 90%. By mid-October 2017, 100% coverage of the bare ground surface had been completed, effectively suppressing the fall dust. During this period, water was only watered twice in mid-June, making full use of the rainy season rainfall.

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Abstract

The invention provides a greening dust suppression method for bare severe saline-alkaline soil. The method includes that a matrix is laid on to-be-greened bare severe saline-alkaline soil, and seedingor cuttage is performed on the matrix. Greening of coastal blow-fill severe saline-alkaline soil higher than 20g/kg in salt content can be realized, and accordingly dust suppression and environment protection are realized. The method is free of salt elimination projects and soil amelioration. Compared with existing saline-alkaline greening techniques focusing on 'soil amelioration' and 'salt elimination projects', the method has advantages that project amount is sharply decreased, maintenance input is avoided, low cost is realized, and the construction cost is only 5%-10% of that of the existing saline-alkaline greening techniques; in addition, wastes and natural rainfall can be effectively used, and greening of the bare saline-alkaline soil, dust suppression and environment protection are realized.

Description

Technical field [0001] The invention belongs to the field of ecological environmental protection, and relates to the field of saline-alkali land improvement and vegetation construction, and in particular to a method for covering bare heavy saline-alkali land with green and dust suppression. Background technique [0002] Fugitive dust is known as one of the three major sources of urban air pollution. According to the monitoring and analysis of the environmental protection department, dust pollution is one of the most important sources of PM2.5, and the dust mainly comes from road dust, construction dust and temporary idle bare land. There are many tidal flat coastal saline soils and coastal saline soils. The total soil salt content is between 10.0‰ and 40.0‰. The soil is barren with extremely poor physical and chemical properties. It is difficult for plants to survive. Most of them are bare land with no grass growing all year round. Bare saline-alkali land is "dirty due to nakedn...

Claims

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Application Information

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IPC IPC(8): A01B79/02A01B79/00A01G20/00A01G2/10A01G17/00A01G24/12A01G24/17A01G24/20
CPCA01B79/02A01B79/00A01G17/005
Inventor 李霞张志华田书温付念刘洪庆
Owner 天津海林环境修复有限公司
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