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Saline-alkali land restoration system and method

A technology for repairing systems and saline-alkali land, applied in the field of ecological restoration, can solve problems such as poor salt discharge effect, achieve the effects of reducing production costs, wide sources, and avoiding huge differences

Pending Publication Date: 2020-01-14
深圳市国艺园林建设有限公司
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Problems solved by technology

However, the setting of this isolation layer often has poor salt removal effect.

Method used

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  • Saline-alkali land restoration system and method
  • Saline-alkali land restoration system and method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] refer to figure 1 , to provide a saline-alkali land repair system, the saline-alkali land repair system is set on the saline-alkali land after leveling the land, and includes a rubble layer 100, a first geotextile layer 200, a gravel layer 300, a second geotextile layer 400 and Planting soil layer 500. The rubble layer 100 is formed by stacking rubble with a size (particle size) of 200mm-300mm, and the thickness is about 80cm. The first geotextile layer 200 is made of waterproof composite geotextile. This type of geotextile can form an effective package, has good performance of isolating leakage, high strength, corrosion resistance, durability, and low elongation. The crushed stone layer 300 is formed by stacking crushed stones with a size (particle size) of 20mm-30mm, and the thickness is about 50cm. The second geotextile layer 400 and the first geotextile layer 200 use the same geotextile. The planting soil layer 500 is made of a mixture of loess, humus and organic...

Embodiment 2

[0033] refer to figure 2 , to provide a saline-alkali land restoration system, the saline-alkali land restoration system is set on the saline-alkali land after leveling the land, and includes a rubble layer 100, a first geotextile layer 200, a litter layer 310, a gravel layer 300, a second Geotextile layer 400 , straw layer 510 and planting soil layer 500 . The selection and setting of the rubble layer 100 , the first geotextile layer 200 , the gravel layer 300 , the second geotextile layer 400 , and the planting soil layer 500 are the same as those in Embodiment 1. The litter layer 310 adopts the litter of plants such as ginkgo, larch, tulip tree, magnolia, eight-treasure tree, silver birch, and acacia to form the litter layer. The litter has very good water-holding performance. When the salt in the saline-alkali soil below the geotextile layer 200 returns to salt due to various reasons, the high water-holding litter layer 310 can ensure that the salt will not return to the...

Embodiment 3

[0035]A saline-alkali land restoration system, the difference from Embodiment 2 is that a drainage pipe is embedded in the straw layer, and the drainage pipe is connected to a salt discharge well. The setting of the drainage pipe can make the water flow generated during the precipitation be discharged to the salt drainage well in time, so as to avoid the migration of salt in the saline-alkali land due to flood irrigation during high rainfall.

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Abstract

The invention discloses a saline-alkali land restoration system and method. The saline-alkali land restoration system comprises a rubble layer, a first geotextile layer, a crushed stone layer, a second geotextile layer and a planting soil layer, wherein the rubble layer is mainly formed by rubbles with the particle sizes of 200 mm to 300 mm; the first geotextile layer covers the rubble layer; thecrushed stone layer is positioned above the first geotextile layer and mainly formed by crushed stone with the particle size of 20 mm to 30 mm; the second geotextile layer covers the crushed stone layer; and the planting soil layer is positioned above the second geotextile layer. The rubble layer and the first geotextile layer are added below the crushed stone layer, so that the rubble layer can effectively form an isolation effect between the first geotextile layer and the original saline-alkali land, salt migration and salt return caused by the reason that effective isolation cannot be formed due to too small gap of the crushed stone are avoided, and the salt discharge effect is improved; and the first geotextile layer can form enough support for separation of the rubble layer and the crushed stone layer, meanwhile, salt which migrates along with evaporation of water is effectively intercepted, and the salt is blocked below the first geotextile layer.

Description

technical field [0001] The invention relates to the technical field of ecological restoration, in particular to a saline-alkali restoration system and a saline-alkali restoration method. Background technique [0002] Saline-alkali soil refers to the soil that inhibits or harms the growth and development of crops due to the accumulation of excessive soluble salts. Saline-alkali soil can be roughly divided into saline soil and alkaline soil according to the soluble salts in it. The soluble salts in saline soil are mainly chloride and sulfate, and the soluble salts in alkaline soil are mainly carbonate and heavy phosphate. The total area of ​​saline-alkali land in my country is 99.13 million hm 2 , the main distribution areas are Northeast China, North China, East China and Northwest China. The formation of saline-alkali land seriously reduces agricultural production, destroys the ecological environment, and causes great losses to the environment, economy and society. [000...

Claims

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Application Information

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IPC IPC(8): A01B77/00A01G22/00A01G17/00
CPCA01B77/00A01G22/00A01G17/005
Inventor 邱妙江赵峰何海燕徐漫莉
Owner 深圳市国艺园林建设有限公司
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