Soil salt unidirectional down-moving method for treatment of saline alkaline land

A saline-alkali land and salt content technology, which is applied in the fields of soil preparation methods, applications, agricultural machinery and implements, etc., can solve the problems of difficulty in application and popularization, difficulty in obtaining saline-free soil, etc., and achieve low application cost, low cost, and reduced salt content.

Inactive Publication Date: 2006-07-12
河北省农林科学院农业经济研究所
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  • Application Information

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Problems solved by technology

The effect of this technology is good, but it is difficult to obtain saline-free so

Method used

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  • Soil salt unidirectional down-moving method for treatment of saline alkaline land

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Embodiment 1

[0032] The method for controlling saline-alkali land by unilateral movement of soil salinity comprises the following steps:

[0033] A, on the low-lying saline-alkali land surface, use bricks to build a rectangular fixed pool 1; the upper edge of the pool of the fixed pool 1 is 20 centimeters higher than the outer surface of the pool, and the area of ​​the fixed pool 1 is 6.25-9 square meters. .

[0034] B. On each periphery of the wall of the fixed pool 1, there is a water guide hole 2 not higher than the surface outside the pool; the diameter of the hole is 10 cm.

[0035] C. Dig the ground in the fixed pool 1 and make it 5 cm lower than the ground outside the pool;

[0036] D. The fixed pool 1 is filled with covering material 3 . The upper surface of the covering material 3 is flush with the top of the wall of the fixed pool 1 . The covering materials are stone chips and sand.

[0037] After step D, timely sow and plant saline-alkali resistant crops or plants in the fix...

Embodiment 2

[0039] The method for controlling saline-alkali land by unilateral movement of soil salinity comprises the following steps:

[0040] A, on the low-lying saline-alkali land surface, use bricks to build a circular fixed pool 1; the upper edge of the pool of the fixed pool 1 is 20 centimeters higher than the outer surface of the pool, and the area of ​​the fixed pool 1 is 6.25-9 square meters. .

[0041] B. On the wall of the fixed pool 1, there are water guide holes 2 not higher than the surface outside the pool at equal intervals; the diameter of the hole is 10 cm.

[0042] C. Dig the ground in the fixed pool 1 and make it 5 cm lower than the ground outside the pool;

[0043] D. Filling the covering material 3 in the fixed pool 1 . The middle part of the upper surface of the covering material 3 is arched higher than the top of the fixed pool 1 wall. The covering material is stone chips, sand or a mixture thereof.

[0044] After step D, timely sow and plant saline-alkali res...

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Abstract

The invention relates to a method for modifying saline-sodic soil, especially to a method of modifying saline-sodic soil through the unidirectional downward shift of the salt in soil, comprising the following steps: constructing annular stationary pool on the surface of the low-level saline-alkali land, setting water-guiding pore lower than the surface out of pool on the wall of the stationary pool, digging the surface inside pool and making it lower than that of out of pool, filling covering material in the stationary pool, with the upper surface higher than the top of the stationary pool wall. The invention solves the problems of only suited for the treatment for episodic soil modification or for light saline-alkali land by current technique, reducing the salt content in the plant root area but not making salt upward shift, preventing salt out of pool brought by wind dropping in the pool and increasing the salt content, the cost of the covering material is low and easy to get. Forest plantation or fell-plant plantation can be carried out in saline-alkali dry and virgin land with salt content higher than 0.5%; the method is especially suited to be applied in areas with the groundwater level higher than 1m.

Description

technical field [0001] The invention belongs to a method for improving saline-alkali soil, in particular to a method for controlling saline-alkali land by unilaterally moving downward the soil salinity. Background technique [0002] Saline-alkali soil is widely distributed in my country, mainly in the north, Xinjiang, the Hexi Corridor in Gansu, the Qaidam Basin in Qinghai, the Hetao Plain in Inner Mongolia, some low-lying areas in Ningxia, the Huanghuaihai Plain, the west of the Northeast Plain, and the coastal areas. region, with a total area of ​​about 100 million mu. Especially in the development of coastal areas, due to the salinity of the soil, urban greening has become an urgent problem to be solved in this area. It is very necessary to study the technologies suitable for greening of saline-alkaline coastal cities. [0003] There are many ways to control saline-alkali land. The most studied in the past are the following: [0004] 1. Salt pressure method. The princ...

Claims

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Application Information

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IPC IPC(8): A01B79/00
Inventor 李志宏范凤翠王慧军贾建明王桂荣石玉芳李敏
Owner 河北省农林科学院农业经济研究所
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