Method for improving saline-alkali soil

A saline-alkali soil and substrate technology, which is applied in the fields of land preparation methods, chemical instruments and methods, and restoration of polluted soil, etc., can solve the problems of not being able to maintain for a long time, the salinity of the surface layer is reduced, and the water level of saline-alkali land is lowered, etc., so as to maintain soil eutrophication. chemical, accelerated salt spraying, long lasting effect

Inactive Publication Date: 2008-04-23
张强 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, there are several domestic and foreign treatment methods for saline-alkali land: salt discharge method, salt pressing method, and salt blocking method, but they all have many shortcomings. Long-term flushing reduces the salt content of the surface layer of the saline-alkali soil; the salt-pressing method uses natural precipitation or artificial flood irrigation to promote part of the saline-alkali to penetrate downward along the soil pores and cracks, and bring the salt content of the surface soil to the bottom layer with water. By irrigating the saline-alkali land, the water level of the saline-alkali land is reduced; although the above method can reduce the salt content of the surface layer of the saline-alkali land, it cannot be maintained for a long time, and a large amount of water is required
The salt plugging method is to replace the surface soil of the saline-alkali land by transplanting foreign soil. Not only is the amount of work large, but also the resources of good soil are needed, but salinization cannot be avoided as time goes by.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] This example describes a method for improving saline-alkali land. It is suitable for soil improvement with a salt content of ≤0.3%. The specific method described in this embodiment is:

[0023] 1) Configure the bacterial solution according to the mass percentage. In the scheme described in this example, two different bacterial solutions are used, among which No. 1 bacterial solution: yeast 0.1‰; starch 0.2‰; glucose 0.1‰, water added to 100%; No. 2 bacterial solution: yeast 0.2‰; starch 0.3‰; glucose 0.1‰; add water to 100%.

[0024] 2) Soak corn and sorghum straw in No. 1 bacterial solution, and soak rice and wheat straw in No. 2 bacterial solution to make a substrate, and the soaking time is 10 minutes.

[0025] 3) Dig pits in saline-alkali land in a grid shape. The diameter of the pits is about 15cm, the depth of the pits is about 100cm, the row spacing is about 50cm;

[0026] 4) Configure the irrigation solution according to the mass percentage: yeast 0.1‰; star...

Embodiment 2

[0031] Embodiment 2: This embodiment describes a method for improving saline-alkali land. It is suitable for soil improvement with a salt content of ≤0.35%. The specific method described in this embodiment is:

[0032] 1) Prepare bacterial solution according to mass percentage: yeast 0.3‰; starch 0.5‰; glucose 0.2‰, add water to 100%.

[0033] 2) Soak corn, sorghum, and cotton stalks in the above bacteria solution for 15 minutes to prepare the substrate.

[0034] 3) Dig parallel ditches in the saline-alkali land. The width of the ditch is about 30cm; the ditch depth is about 100cm;

[0035] 4) Spread the crushed corn, sorghum, and cotton stalks on the surface of the saline-alkali ground with a thickness of about 12 cm, spread evenly and cover with soil with a thickness of 10 cm;

[0036] 5) Configure the irrigation solution according to the mass percentage: yeast 0.2‰; starch 0.3‰; add water to 100%,

[0037] 6) Irrigate with irrigation liquid until the ground is thoroughl...

Embodiment 3

[0041] Embodiment 3: This embodiment describes a method for improving saline-alkali land. It is suitable for soil improvement with a salt content of ≤0.4%. The specific method described in this embodiment is:

[0042] 1) Prepare bacterial solution according to mass percentage: yeast 0.4‰; starch 0.6‰; glucose 0.1‰, add water to 100%.

[0043] 2) Soak 30% of corn or sorghum stalks, 60% of cotton stalks; 10% of leaves, branches, Vitex twigs, etc. in the above bacteria solution for 30 minutes to prepare the substrate.

[0044] 3) Bundle the soaked substrate into a cylindrical shape with a diameter of about 50 cm and a height of 100 cm;

[0045] 4) In the saline-alkali land, according to the grid shape, bury the substrate bundle along the vertical direction, the row spacing is about 80cm; the plant spacing is about 80cm; the depth is 130cm;

[0046] 5) Crush the substrate soaked in step 2, spread it on the surface of the saline-alkali ground, the thickness of the spread is 15cm...

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Abstract

The present invention relates to a method for improving saline-alkali soil. Said invention utilizes straws and stalks of crops and plant branch and leaf as base material, and adopts the following steps: soaking the base material in fungous solution, binding it into the column form, making the column-form base material be embedded into the soil vertically according to the network form, utilizing the dialysis produced by said network-shaped base material and soil to prevent the salt content in the underground water from dire4ctly rising to soil surface and concentrating to make soil be salinized. Besides, covering the soil surface with pulverized straws and stalks of crops and plant branch and leaf, making irrigation by using the invented irrigation liquor, ploughing to make soil be loosened so as to attain the goal for improving saline-alkali soil.

Description

technical field [0001] The invention is a method for improving saline-alkali land. Background technique [0002] At present, there are several domestic and foreign treatment methods for saline-alkali land: salt discharge method, salt pressing method, and salt blocking method, but they all have many shortcomings. Long-term flushing reduces the salt content of the surface layer of the saline-alkali soil; the salt-pressing method uses natural precipitation or artificial flood irrigation to promote part of the saline-alkali to penetrate downward along the soil pores and cracks, and bring the salt content of the surface soil to the bottom layer with water. By irrigating the saline-alkali land, the water level of the saline-alkali land is reduced; although the above method can reduce the salinity of the surface layer of the saline-alkali land, it cannot be maintained for a long time and requires a large amount of water. The salt plugging method is to replace the surface soil of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/00B09C1/10C09K17/32A01B79/00
Inventor 张强梁瑞杰
Owner 张强
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