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 the fields of 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 effect of reduced operation and management costs, excellent desalination effect, and rapid desalination.
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[0019] Example 1.
[0020] (A) Ditching and dam: excavate a salt-draining ditch 2 every 100 m on the flat saline-alkali soil with a width of 2.5 m and a trenching depth of 1.8 m. The salt-draining ditch 2 is connected to the main drainage canal. The earth produced by trenching is on the surface of dam 3, which has a height of 0.4 m.
[0021] (B) Laying of salt drain concealed pipes: In the direction perpendicular to salt drain ditch 2, lay salt concealed pipes 7 with water seepage micropores 73 in parallel, laying depth 1.2 m, laying spacing 30 m, and both ends of salt draining concealed pipes 7 Enter the salt drainage ditch 2.
[0022] (C) Laying of concealed irrigation pipes: After laying the concealed pipes 7 for salt discharge, lay the concealed irrigation pipes 4 with a laying depth of 1 m, and a water outlet 5 on the surface of the terrace 1. The concealed irrigation pipe 4 is connected to the irrigation pipe network.
[0023] (D) Deep loosening of knots: Deep loosening machin...
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