Remediation method of saline-alkali land soil

A restoration method, saline-alkali land technology, applied in the field of soil restoration, can solve problems such as weakening soil alkalinity, and achieve the effects of improving soil quality, reducing salt content, and increasing surface area

Inactive Publication Date: 2019-07-09
孙天民
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method has a certain effect, it can only achieve the purpose of weakening soil alkalinity, and cannot fundamentally solve soil salinization.

Method used

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  • Remediation method of saline-alkali land soil

Examples

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Comparison scheme
Effect test

Embodiment 1

[0027] A method for repairing saline-alkali soil, the specific method of use is as follows:

[0028] 1) Choose the first ten days of May, which is sunny and rainless, and dig the soil to a depth of 60cm, then spread a layer of degradable waterproof film on the bottom, spread a layer of super-absorbent sponge evenly on the film, and then backfill the soil 6cm ;

[0029] 2) After leveling the backfill soil, spread a layer of salt anion adsorption film on the soil surface, then continue to backfill the soil for 6cm, and then spread a layer of salt anion adsorption film, then continue to backfill the soil for 6cm, and spread a layer of water absorption to reach saturation Superabsorbent sponge, repeat the above steps until the soil backfill is completed;

[0030] 3) After the soil is completely backfilled, let the soil be exposed to the sun for 40 days, then dig the soil deeply, remove the salt anion adsorption film in the soil and the 1cm thick soil on the surface of the film, a...

Embodiment 2

[0042] A method for repairing saline-alkali soil, the specific method of use is as follows:

[0043] 1) Choose the sunny and rainless early May, dig the soil to a depth of 70cm, then spread a layer of degradable waterproof film on the bottom, spread a layer of super-absorbent sponge evenly on the film, and then backfill the soil 7cm ;

[0044] 2) After leveling the backfill soil, spread a layer of salt anion adsorption film on the soil surface, then continue to backfill the soil for 7cm, and then spread a layer of salt anion adsorption film, then continue to backfill the soil for 7cm, and spread a layer of water absorption to reach saturation Superabsorbent sponge, repeat the above steps until the soil backfill is completed;

[0045] 3) After the soil is completely backfilled, let the soil be exposed to the sun for 50 days, then dig the soil deeply, remove the salt anion adsorption film in the soil and the 1.5cm thick soil on the film surface, and the soil restoration can be ...

Embodiment 3

[0057] A method for repairing saline-alkali soil, the specific method of use is as follows:

[0058] 1) Choose the first ten days of May, which is sunny and less rainy, and dig the soil to a depth of 80cm, then spread a layer of degradable waterproof film on the bottom, and evenly spread a layer of super-absorbent sponge that absorbs water to saturation on the film, and then backfill the soil 8cm ;

[0059] 2) After leveling the backfill soil, spread a layer of salt anion adsorption film on the soil surface, then continue to backfill the soil 8cm, and then spread a layer of salt anion adsorption film, then continue to backfill the soil 8cm, and spread a layer of water absorption to reach saturation Superabsorbent sponge, repeat the above steps until the soil backfill is completed;

[0060] 3) After the soil is completely backfilled, let the soil be exposed to the sun for 60 days, then dig the soil deeply, remove the salt anion adsorption film in the soil and the 2cm thick soi...

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Abstract

The invention discloses a remediation method of saline-alkali land soil. The remediation method specifically comprises the following steps of 1, selecting a certain day of the first ten days of May with sunny and rainless weather, laying a degradable waterproof thin film on the bottom after the soil is deeply dug, then laying a layer of a super-water-absorption sponge on the thin film, and then conducting backfilling of a little soil; 3, after the backfill soil is leveled, laying a layer of a salinity anion adsorption thin film on the surface of the soil, then continuing to conduct backfillingof a little soil, then laying a layer of a salinity anion adsorption thin film, then continuing to conduct backfilling of a little soil, laying a layer of a super-water-absorption sponge, and repeating the step until soil backfilling is finished; 3, after soil backfilling is completely finished, conducting exposure on the soil in the sun for 40-60 days, then ploughing the soil under to great depth, and taking away the salinity anion adsorption thin film in the soil and soil of 1-2 cm in thickness on the surface of the thin film to complete soil remediation. By means of the remediation method,by adsorbing and removing salinity cations contained in the soil, the salinity content in the soil is reduced accordingly, and the purpose of improving soil quality is improved.

Description

technical field [0001] The invention belongs to the technical field of soil remediation, and in particular relates to a method for remediating saline-alkali soil. Background technique [0002] With the rapid increase of population and the deteriorating climate conditions, the salinization of land is a worldwide ecological problem. An important limiting factor for the sustainable development of world agriculture. The area of ​​salinized cultivated land in my country ranks fourth in the world, mainly distributed in 17 provinces including northeast, north, northwest and coastal areas. In order to ensure the safety of food production in our country, improve the ecological environment, and realize the sustainable utilization of resources, it is imminent to accelerate the development of saline-alkali land improvement technology. Therefore, improving saline-alkali land resources and making efficient use of saline-alkali land resources is the ultimate goal of saline-alkali land im...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01B79/00
CPCA01B79/00
Inventor 孙天民
Owner 孙天民
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