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Sand column and method for improving secondary saline-alkali soil and restoring grassland ecology by using same

A sand column and secondary technology, applied in the direction of soil preparation methods, botanical equipment and methods, applications, etc., can solve the problems of low organic matter content, decreased soil fertility, poor water permeability and air permeability of saline-alkali land, etc., to achieve low soil fertility and prevent secondary growth Salinization, the effect of accelerating the infiltration rate of water

Pending Publication Date: 2021-04-13
内蒙古蒙草土壤科技有限责任公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The second purpose of the present invention is to provide a method for improving secondary saline-alkali land and restoring grassland ecology by using sand pillars, which solves the problems of poor water and air permeability, low organic matter content, and decreased soil fertility in saline-alkali land. Post-salt return of soil and grassland ecological restoration provide technical solutions

Method used

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  • Sand column and method for improving secondary saline-alkali soil and restoring grassland ecology by using same
  • Sand column and method for improving secondary saline-alkali soil and restoring grassland ecology by using same
  • Sand column and method for improving secondary saline-alkali soil and restoring grassland ecology by using same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Such as figure 1 , 2 As shown, a sand column, including cultivated soil layer 1 and clear sand layer 2;

[0050] The cultivated soil layer 1 and the clear sand layer 2 are arranged sequentially from the surface downward;

[0051] The clear sand layer includes a fine sand and organic fertilizer mixed layer 3, a fine sand layer 4 and a coarse sand layer 5, and each layer is arranged in sequence from top to bottom.

[0052] In this implementation, the column height of the sand column 6 is 80cm;

[0053] In this implementation, the height ratio of the cultivated soil layer 1 and the clear sand layer 2 is 3:4.

[0054] In this implementation, the height ratio of the fine sand and organic fertilizer mixed layer 3, fine sand layer 4 and coarse sand layer 5 is 2:2:3;

[0055] In this implementation, the mixing mass ratio of fine sand and organic fertilizer in the fine sand and organic fertilizer mixing layer 3 is 8:1;

[0056] In this implementation, the grain diameter of th...

Embodiment 2

[0074] Such as figure 1 , 3 As shown, a sand column, including cultivated soil layer 1 and clear sand layer 2;

[0075] The cultivated soil layer 1 and the clear sand layer 2 are arranged sequentially from the surface downward;

[0076] The clear sand layer includes a fine sand and organic fertilizer mixed layer 3, a fine sand layer 4 and a coarse sand layer 5, and each layer is arranged in sequence from top to bottom.

[0077] In this implementation, the column height of the sand column 6 is 120cm;

[0078] In this implementation, the height ratio of the cultivated soil layer 1 and the clear sand layer 2 is 3:5.

[0079] In this implementation, the height ratio of the fine sand and organic fertilizer mixed layer 3, fine sand layer 4 and coarse sand layer 5 is 1:1:5;

[0080] In this implementation, the mixing mass ratio of fine sand and organic fertilizer in the fine sand and organic fertilizer mixing layer 3 is 10:1;

[0081] In this implementation, the grain diameter o...

Embodiment 3

[0098] Such as figure 1 , 2 As shown, a sand column, including cultivated soil layer 1 and clear sand layer 2;

[0099] The cultivated soil layer 1 and the clear sand layer 2 are arranged sequentially from the surface downward;

[0100] The clear sand layer includes a fine sand and organic fertilizer mixed layer 3, a fine sand layer 4 and a coarse sand layer 5, and each layer is arranged in sequence from top to bottom.

[0101] In this implementation, the column height of the sand column 6 is 100cm;

[0102] In this implementation, the height ratio of the cultivated soil layer 1 and the clear sand layer 2 is 5:5.

[0103] In this implementation, the height ratio of the fine sand and organic fertilizer mixed layer 3, fine sand layer 4 and coarse sand layer 5 is 2:1:3;

[0104] In this implementation, the mixing mass ratio of fine sand and organic fertilizer in the fine sand and organic fertilizer mixing layer 3 is 9:1.5;

[0105] In this implementation, the grain diameter ...

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Abstract

The invention discloses a sand column. The sand column comprises a cultivated soil layer and an open sand layer, and the open sand layer comprises a fine sand and organic fertilizer mixed layer, a fine sand layer and a coarse sand layer. The sand column is convenient to operate, good in water permeability and air permeability, less in resource investment and low in construction difficulty, and the soil remediation cost is saved. The invention also discloses the sand column and a method for improving secondary saline-alkali soil and restoring grassland ecology by using the sand column. The method comprises the following steps of arranging sand columns, constructing the sand columns, improving the secondary saline-alkali soil and restoring the grassland ecology by using the sand columns, wherein the sand columns are arranged in a double-V shape and / or a rhombus shape. The sand column can increase the water infiltration speed and increase the soil desalination rate, is suitable for ecological restoration of unimproved saline-alkali soil and can also be used for restoration of saline-alkali soil which is desertified again due to careless management and maintenance after improvement for a period of time, a theoretical and practical method is provided for improving secondary saline-alkali soil and restoring grassland ecology, and the popularization significance is realized.

Description

technical field [0001] The invention relates to the technical field of saline-alkali land improvement and grassland ecological restoration, in particular to a sand column and a method for improving secondary saline-alkali land and restoring grassland ecology by using the same. Background technique [0002] With the change of the environment, excessive land reclamation, overloaded grazing, heavy use and light farming, predatory management and other irrational use methods, the structural defects and functional disorders of the grassland ecosystem have been caused, and the coordination relationship between organisms and the environment has been destroyed, and the grassland ecosystem has been promoted. The phenomenon of salinization is getting worse, the ecological environment is deteriorating day by day, and the biodiversity is decreasing. Under normal circumstances, groundwater and surface soil water are in a certain dynamic equilibrium state, but when the climate is dry, soil...

Claims

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Application Information

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IPC IPC(8): A01G24/10A01G24/12A01G24/20A01G24/40A01G22/00A01G22/60A01B79/02
CPCA01G24/10A01G24/12A01G24/20A01G24/40A01G22/00A01G22/60A01B79/02Y02A40/22
Inventor 白寅祯王召明贺勇彭龙王乌恩巴图高鸿永滕庆山郭英杰陈晓杰
Owner 内蒙古蒙草土壤科技有限责任公司
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