Saline-alkali soil improving method

A technology of saline-alkali land and improver, which is applied in the direction of soil preparation, soil protection, fertilizer made from biological waste, etc., to achieve the effect of strong pertinence, good quality and high fertilizer content

Inactive Publication Date: 2017-08-25
梁勇
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the defects in the prior art, the purpose of the present invention is to provide a method for improving saline-alkali land, to reduce soil bulk density and soil salinity in saline-alkali land; to improve soil porosity and soil nutrients, thereby effectively improving soil salinization and reducing soil salinity. Mi

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  • Saline-alkali soil improving method
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Examples

Experimental program
Comparison scheme
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Example Embodiment

[0025] Example one

[0026] This embodiment provides a method for improving saline-alkali land, including the following steps:

[0027] S1: Plowing the saline-alkali land in turn, the number of times is 3 times, and the depth of tillage is 40cm; and the drying is performed again, the number of times is 2 times, and the interval between each drying is 8 days;

[0028] S2: Perform land leveling on the saline-alkali land treated with S1, and perform high excavation and low fill leveling on the flat land, with a maximum slope of 10°;

[0029] S3: The saline-alkali soil treated by S2 is used to drain salt water by concealed pipes, the buried depth of the salt-discharge concealed pipe is 1.3m, the slope ratio is 0.7‰, there are multiple salt-discharge concealed pipes in parallel, and the distance between two adjacent salt-discharge concealed pipes It is 30m; the salt-discharging concealed pipe is a single-wall corrugated pipe with a diameter of 11cm and a 15cm thick sand and gravel material...

Example Embodiment

[0032] Example two

[0033] This embodiment provides a method for improving saline-alkali land, including the following steps:

[0034] S1: Plowing the saline-alkali land in turn, the number of times is 4 times, and the depth of tillage is 35cm; and the drying is performed again, the number of times is 2 times, and the interval between each drying is 10d;

[0035] S2: Perform land leveling on the saline-alkali land after S1 treatment, and perform high excavation and low filling leveling on the flat land, with a maximum slope of 11°;

[0036] S3: The saline-alkali soil treated by S2 is drained by concealed pipes. The buried depth of the salt-discharge concealed pipe is 1.4m, the slope ratio is 0.8‰, and there are multiple salt-discharge concealed pipes in parallel, and the distance between two adjacent salt-discharge concealed pipes It is 30m; the salt-discharging concealed pipe is a single-wall corrugated pipe with a diameter of 11cm and a 15cm thick sand and gravel material outside; ...

Example Embodiment

[0039] Example three

[0040] This embodiment provides a method for improving saline-alkali land, including the following steps:

[0041] S1: Plowing the saline-alkali land in turn, the number of times is 5 times, and the depth of tillage is 30cm; and the drying is performed again, the number of times is 3 times, and the interval between each drying is 9d;

[0042] S2: Perform land leveling on the saline-alkali land after S1 treatment, and perform high excavation and low fill leveling on the flat land, with a maximum slope of 12°;

[0043] S3: The saline-alkali soil treated by S2 will be drained of salt water by concealed pipes. The buried depth of the salt-discharging concealed pipe is 1.5m, the slope ratio is 0.9‰, and there are multiple salt-discharging concealed pipes in parallel, and the distance between two adjacent salt-discharging concealed pipes It is 40m; the salt-discharging concealed pipe is a single-wall corrugated pipe with a diameter of 11cm and a 15cm thick sand and gr...

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Abstract

The invention relates to a saline-alkali soil improving method. The method combines farming improvement, water conservation improvement and application of a saline-alkali soil amendment, wherein farming improvement comprises deep ploughing, upturned soil sunning and land levelling; water conservation improvement comprises underground salt drain pipe laying and irrigation. With adoption of the method, soil bulk density and soil salinity of the saline-alkali soil can be reduced, soil porosity and soil nutrients can be increased, so that salinization of the soil is effectively improved, and the problems of reduction of grain yield, reduction of vegetation cover area, deterioration of the ecological environment and the like caused by salinization of the soil are relieved; the method is high in pertinence and remarkable in effect, popularization and promotion of technologies are facilitated, and large-scale application can be realized.

Description

technical field [0001] The invention relates to the technical field of land improvement, in particular to a method for improving saline-alkali land. Background technique [0002] my country is a country seriously endangered by salinization, and there are about 27 million hm of saline-alkali land in the country 2 , of which 7.7 million hm 2 The above are distributed in farmland, accounting for about 7% of the cultivated land area. For arid areas, more than 1 / 3 of the soil belongs to the middle and low yield fields caused by salinization. Improving saline-alkali land and preventing secondary salinization, as well as maintaining and improving land production capacity are important contents for maintaining land production capacity and sustainable agricultural development in arid areas. Because soil salinization directly affects soil structure, water and air conduction, water and fertilizer supply capacity, and plant emergence and growth processes, scholars from all over the wo...

Claims

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Application Information

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IPC IPC(8): A01B79/02E02D3/00E02D3/10C05G3/04C05G3/80
CPCA01B79/02C05D3/02C05G3/80E02D3/00E02D3/10C05D5/00C05D9/00C05D9/02C05F3/00C05F5/006
Inventor 梁勇
Owner 梁勇
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