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Comprehensive treatment method for coastal saline alkali soil

A technology for comprehensive treatment of saline-alkali soil, applied in the field of comprehensive treatment of coastal saline-alkali soil, can solve problems such as damage to the root system of crops, high salt content, and growth of seedlings, and achieve the effect of improving fertility

Inactive Publication Date: 2018-09-28
FUJIAN AGRI & FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the salt content of coastal saline-alkali soil is too high. If it is not treated, it will damage the root system of crops, and some crop seedlings cannot even grow in saline-alkali soil.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A comprehensive treatment method for coastal saline-alkali soil, comprising the following steps:

[0024] (1) Topsoil eradication (remove the deep salt to the soil surface): After the summer rain, lay a layer of wet thin sponge on the soil surface of the saline-alkali land, expose it to the sun for 2 days, and evaporate the salt in the soil to accumulate on the soil surface. Then remove the soil at a depth of 0-3cm from the surface;

[0025] (2) Concealed pipe drainage: Install a concealed pipe every 8m on the saline-alkali ground. The concealed pipe is installed at a position 6m deep from the soil surface. Small holes are evenly distributed on the concealed pipe, and the outside of the small hole is wrapped with non-woven fabric , used to remove the soil salinity in the profile, and the drainage of the underground pipe depends on natural rainfall;

[0026] (3) Surface drainage: Part of the salt cannot reach the position of the hidden pipe, and returns to the soil surf...

Embodiment 2

[0029] A comprehensive treatment method for coastal saline-alkali soil, comprising the following steps:

[0030] (1) Topsoil eradication (remove the deep salt to the soil surface): After the summer rain, lay a layer of wet thin sponge on the soil surface of the saline-alkali land, expose it to the sun for 3 days, and evaporate the salt in the soil to accumulate on the soil surface. Then remove the soil at a depth of 0-3cm from the surface;

[0031] (2) Concealed pipe drainage: Install a concealed pipe every 7.5m on the saline-alkali ground. The concealed pipe is installed at a position 5.5m deep from the soil surface. Cloth wrapping is used to remove the salinity of the profile soil, and the drainage of the underground pipe depends on natural rainfall;

[0032] (3) Surface drainage: part of the salt cannot reach the position of the hidden pipe, and returns to the soil surface with the evaporation of soil water, causing the soil to return to salt. Therefore, this part of the s...

Embodiment 3

[0035] A comprehensive treatment method for coastal saline-alkali soil, comprising the following steps:

[0036] (1) Topsoil eradication (remove the deep salt to the soil surface): After the summer rain, lay a layer of wet thin sponge on the soil surface of the saline-alkali land, expose it to the sun for 2 days, and evaporate the salt in the soil to accumulate on the soil surface. Then remove the soil at a depth of 0-3cm from the surface;

[0037] (2) Concealed pipe drainage: Install a concealed pipe every 8.5m on the saline-alkali ground. The concealed pipe is installed at a position 6.5m deep from the soil surface. Cloth wrapping is used to remove the salinity of the profile soil, and the drainage of the underground pipe depends on natural rainfall;

[0038] (3) Surface drainage: Part of the salt cannot reach the position of the hidden pipe, and returns to the soil surface with the evaporation of soil water, causing the soil to return to salt. Therefore, this part of the s...

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Abstract

The invention discloses a comprehensive treatment method for coastal saline alkali soil. The comprehensive treatment method includes the steps: (1) removing surface soil: laying thin sponge on the soil surface of a saline alkali land, drying the soil under the blazing sun for 2-3 days to enable salinity in the soil to accumulate in the surface layer of the soil through evaporation, and removing the soil on the surface layer; (2) draining with concealed tubes: mounting concealed tubes at a certain depth from the surace of the saline alkali land at intervals, wherein small holes for dischargingsalinity of the soil on the profile are distributed in the concealed tubes and covered with non-woven fabrics; (3) draining ground water: furrowing the surface layer of the soil at the interval of 3-3.2 m to achieve ground water discharge; (4) applying soil conditioners into the soil. The comprehensive treatment method has the advantage that the salinity content of the soil on the profile of the saline alkali land can be reduced remarkably according to a salinity reduction strategy of 'eradication, water discharge and chemical application'.

Description

technical field [0001] The invention relates to the technical field of saline-alkali soil improvement, in particular to a comprehensive treatment method for coastal saline-alkali soil. Background technique [0002] Coastal saline-alkali soil has great potential, and many coastal provinces have built coastal agricultural areas, turning tidal flat resources into tens of thousands of acres of fertile land. For example, the saline-alkali land development project in Rudong, Jiangsu, the Hangzhou Bay project in Zhejiang, the Binhai New Area project in Tianjin, and so on. However, the salt content of coastal saline-alkali soil is too high, and if it is not treated, it will damage the root system of crops, and some crop seedlings cannot even grow in saline-alkali soil. Therefore, how to reduce the salinity of coastal saline-alkali soil has become a hot issue in the research of coastal resources at the present stage. Contents of the invention [0003] The object of the present in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01B79/02
CPCA01B79/02
Inventor 侯毛毛李继宇林志远卢昕宇
Owner FUJIAN AGRI & FORESTRY UNIV
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