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Improving method of saline-alkali soil

A soil improver and saline-alkali land technology, which is applied in the field of saline-alkali soil improvement, can solve the problems of unfavorable ecological environment and sustainable development, and achieve the effects of sustainable development, green governance, and reduction of soil alkalinity

Inactive Publication Date: 2018-06-22
江苏恒绿建设集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this comprehensive transformation method of saline-alkali land cooperates with saline-alkali land improvement agents to reduce water consumption and enhance the improvement effect, there is still a large amount of flushing water carrying soluble salts into the ground, which is not conducive to the sustainable development of the ecological environment.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Embodiment 1: the present invention provides a kind of improvement method of saline-alkali soil, comprises the following steps:

[0038] S1: Measure the coverage of saline-alkali land, and divide several governance units according to the gradient change of salinity and land occupation.

[0039]S101: Excavate soil pits at the divided treatment units, specifically: take 15cm as the excavation depth, dig out the topsoil, accumulate the topsoil on one side, and replenish water periodically before backfilling; take 5cm as the excavation depth, Dig out the subsoil, pile the subsoil on the other side, and refill periodically before backfilling. Due to the large amount of water evaporation on the surface in spring, the salt in the lower layer of the soil accumulates from the capillaries in the soil to the surface of the soil along with the water, and the lower salt content is relatively small, which makes it convenient for the staff to concentrate on improving the saline-rich s...

Embodiment 2

[0047] Embodiment 2: the improvement method of a kind of saline-alkali soil disclosed in this embodiment is basically the same as in embodiment 1, and the difference of its step is:

[0048] S101: Excavate soil pits at the divided treatment units, specifically: take 20cm as the excavation depth, dig out the topsoil, accumulate the topsoil on one side, and replenish water periodically before backfilling; take 10cm as the excavation depth, Dig out the subsoil, pile the subsoil on the other side, and refill periodically before backfilling. Due to the large amount of water evaporation on the surface in spring, the salt in the lower layer of the soil accumulates from the capillaries in the soil to the surface of the soil along with the water, and the lower salt content is relatively small, which makes it convenient for the staff to concentrate on improving the saline-rich soil and avoid enrichment in the lower layer after the improvement is completed. The salt in the soil re-accumu...

Embodiment 3

[0054] Embodiment 3: the improvement method of a kind of saline-alkali soil disclosed in this embodiment is basically the same as in Embodiment 1, and the difference of its steps is:

[0055] S101: Excavate soil pits at the divided treatment units, specifically: take 25cm as the excavation depth, dig out the topsoil, accumulate the topsoil on one side, and replenish water periodically before backfilling; take 15cm as the excavation depth, Dig out the subsoil, pile the subsoil on the other side, and refill periodically before backfilling. Due to the large amount of water evaporation on the surface in spring, the salt in the lower layer of the soil accumulates from the capillaries in the soil to the surface of the soil along with the water, and the lower salt content is relatively small, which makes it convenient for the staff to concentrate on improving the saline-rich soil and avoid enrichment in the lower layer after the improvement is completed. The salt in the soil re-accum...

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Abstract

The invention provides an improving method of saline-alkali soil, and relates to the technical field of soil improving. The method is aimed at solving the problem that salt is downward gathered duringsoil improving in the prior art. The method includes the steps of digging soil pits in surface layer soil and lower layer soil, stacking fertilizer in the soil pits, stacking lower layer soil on thefertilizer in a layered mode, scattering a soil improver between different layers of lower layer soil, arranging the lower layer soil in a mound-shaped mode, laying surface layer soil on the lower layer soil, planting salicornia, forming water collecting ditches around the soil pits, laying waterproof membranes in the water collecting ditches, and in addition, arranging water seepage pits in the surface layer soil. By the cooperation of the water seepage pits, the soil improver and the salicornia, the salt content of soil is reduced; by collecting and processing waste liquid containing a largeamount of salt, it is avoided that salt is enriched underground and recycled, and the green treatment and ecological sustainable development of the saline-alkali soil are realized.

Description

technical field [0001] The invention relates to the technical field of soil improvement, in particular to a method for improving saline-alkali soil. Background technique [0002] Saline-alkali land refers to the salt accumulation land where the salt contained in the soil affects the normal growth of crops. According to the incomplete statistics of UNESCO and FAO, the area of ​​saline-alkali land in China is as high as 99.13 million hectares. The formation of saline-alkali land in my country is closely related to the soil It is related to the accumulation of carbonate in the middle, and it is difficult for plants to grow in the heavily saline-alkaline land, and the salinization of the land has caused serious damage to the ecological environment and the national economy. [0003] At present, a water irrigation improvement method for saline-alkali land is disclosed on the market, comprising the following steps: 1. washing salt; 2. leveling the land; 3. harrowing the land in due ...

Claims

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Application Information

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IPC IPC(8): A01B79/00
CPCA01B79/00
Inventor 秦雷健施殷华王世强朱泉花
Owner 江苏恒绿建设集团有限公司
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