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Quick saline-alkali land desalting system method by means of concealed-tube irrigation and drainage

A saline-alkali land, irrigation and drainage technology, applied in land preparation methods, soil-lifting machinery, agricultural machinery and implements, etc., can solve problems such as the inability to achieve rapid desalination of saline-alkali land, and achieve the effects of reduced operation and management costs, excellent desalination effect, and reduced investment.

Active Publication Date: 2015-06-24
TIANJIN LVYIN LANDSCAPE & ECOLOGY CONSTR
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Zhang Wanjun and others disclosed a salt drainage method for underground pipes in shallow submerged coastal saline soil areas, and limited the buried method of underground pipes; The method is limited; Chen Rongmao et al. disclose a kind of hidden pipe device for salt discharge and alkali reduction in saline-alkali land, and the specifications and laying specifications of the dark pipe are limited; but the above-mentioned several methods for removing salt from the dark pipe are not systematic methods for rapid desalination in saline-alkali land. Unable to achieve rapid desalination in saline-alkali

Method used

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  • Quick saline-alkali land desalting system method by means of concealed-tube irrigation and drainage
  • Quick saline-alkali land desalting system method by means of concealed-tube irrigation and drainage

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Embodiment 1

[0020] (a) Ditching and surrounding dams: Dig a salt drainage ditch 2 every 100 m in the flat saline-alkali land, with a width of 2.5 m and a depth of 1.8 m. The salt drainage ditch 2 is connected to the main drainage canal. The earthwork produced by trenching is on the surface of the dam 3, and the height of the dam 3 is 0.4 m.

[0021] (b) Laying of hidden salt drainage pipe: In the direction perpendicular to the salt drainage ditch 2, the salt drainage hidden pipe 7 with water seepage micropores 73 is laid in parallel, the laying depth is 1.2 m, and the laying distance is 30 m. Enter the salt drainage ditch 2.

[0022] (c) Laying of hidden irrigation pipes: after laying of the hidden salt drainage pipes 7, lay the hidden irrigation pipes 4 at a depth of 1 m, and set the water outlet 5 on the surface of the terrace 1. The irrigation hidden pipe 4 is connected with the irrigation pipe network.

[0023] (d) Subsoiling and breaking knots: The soil was subsoiled on the surface...

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Abstract

The invention relates to the technical field of land improvement, in particular to a quick saline-alkali land desalting system method by means of concealed-tube irrigation and drainage. The method includes adopting a series of technical measures including ditching and dike enclosing, salt-drainage concealed-tube laying, irrigation concealed-tube laying, deep scarification and cracking, fresh-water basin irrigation, salt-water forced drainage, continuous irrigation and drainage, annual salt drainage and the like in heavy saline-alkali land near seashores to realize quick saline-alkali land desalting. The quick saline-alkali land desalting system method has the advantages that underground water level can be lowered through ditching and field raising, salt in the land can be washed through basin irrigation, the saline-alkali land can be desalted quickly through salt-water forced drainage, and annual salt drainage is realized and salt accumulation in the land is avoided by keeping lower water levels of salt drainage ditches, so that one-step quick desalting is realized, desalting effect is maintained for a long time, and improvement of the saline-alkali land is realized quickly.

Description

technical field [0001] The invention relates to the technical field of soil improvement, in particular to a fast desalination system method for underground pipe irrigation and drainage of saline-alkali land. Background technique [0002] Saline-alkali land is a huge potential resource, and the development and utilization of saline-alkali land is one of the important measures to expand the area of ​​cultivated land and further develop agricultural production. There are about 1.5 billion mu of various saline soils in my country, accounting for 26.3% of the world's saline soil area. The coastal and inland areas have a large area of ​​saline-alkali land, and most of the saline-alkali land has been waiting for development. In particular, heavy saline-alkali coastal areas have high groundwater levels, high soil salinity, soil compaction, low soil fertility, and poor air permeability, making it difficult to produce various economic crops. How to quickly desalinate saline-alkali la...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01B79/00A01B77/00
Inventor 王建林杨新民
Owner TIANJIN LVYIN LANDSCAPE & ECOLOGY CONSTR
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