Greening method for controlling and discharging salt stepwise in coastal saline area

A saline-alkali land and stepped technology, which is applied in the field of soil control and salt discharge in coastal saline-alkali green land, can solve the problems of not distinguishing between vegetation types and green land landscape layout characteristics, large excavation and backfill engineering, and waste of water resources, so as to save water resources , reduce workload and save cost
CN104094693AActive Publication Date: 2014-10-15TIANJIN TEDA GREEN GRP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
TIANJIN TEDA GREEN GRP CO LTD
Publication Date
2014-10-15

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Abstract

The invention relates to a greening method for controlling and discharging salt stepwise in a coastal saline area. The greening method is characterized by comprising the following steps: constructing a floral band area, a shrub band area and a tree band area in sequence in an area to be improved; aiming at the floral band area, the shrub band area and the tree band area, arranging planting soil layers with the thicknesses of 40 to 60 cm, 65 to 80 cm and 100 to 120 cm respectively; arranging sprinkling layers with the thicknesses of 5 to 12 cm, 10 to 15 cm and 15 to 25 cm respectively below the planting soil layers, wherein the sprinkling layers are respectively made of straws with the diameter of 1 to 2 cm, coarse sand with the diameter of 0.5 to 2 mm, and graded broken stone with the diameter of 5 to 10 mm; geotextile externally-packaged drainage boards are arranged between different types of vegetation interfaces. According to the greening method, the buried depths of the sprinkling layers are arranged stepwise according to the plant species and root activity layer depths, so that the excavation and backfilling workload is greatly reduced, the construction period is shortened, and the cost is low.
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Description

technical field

[0001] The invention relates to a soil salt discharge control method for coastal saline-alkali green land, in particular to a soil salt discharge control method for coastal saline-alkali green land with distinct vertical layers for classified planting of trees, shrubs, and flowers. Background technique

[0002] Coastal saline-alkali land is an area directly or indirectly affected by sea water or tides. my country has a vast sea area, with a coastline of 18,000 km and a salt flat area of ​​about 22,000 km 2 , is an important reserve land resource in my country, but high salinity, easy to repeat technical problems seriously restrict the development and construction of coastal salt flats. In coastal areas, due to the proximity to the sea, the groundwater level is high and the water quality is salty. Under the dual effects of ocean tides and seawater-type groundwater, the soil salinity remains high, especially in areas with high evapotranspiration ratios, such a...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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