Shallow water level double salt-affected soil raw soil planting and greening method

Abstract

The invention relates to a technology for afforestation and planting in areas with shallow water level and heavily-salted soil and solves the problems of high cost for foreign soil replacement and short duration. The technical proposal is that: the process realizes the original soil planting by building an integral isolation zone in the greening area and controlling a microcirculation system inside the isolation zone and desalting with fresh water. The process comprises the following steps: A. building an isolation zone; B. desalting with fresh water until the salt content in soil is below 0.2%; and C. planting seedlings for afforestation. The technology solves the technical problems of high cost for foreign soil replacement and short duration of afforestation and greening in coastal areas with shallow water level and heavily-salted soil; and has the advantages of overcome serious erosion of underground salt water to soil mass, good desalting effect, reduced afforestation cost, improved soil structure, low requirements for raw materials for afforestation, applicability for various seedlings, easy maintenance and management and low cost.

Description

technical field [0001] The invention relates to a planting and greening method in the technical fields of forestry and gardening. Background technique [0002] With the continuous development of coastal cities, especially port cities near the sea, the technical requirements for environmental greening, beautification and optimization are getting higher and higher. However, since most of these areas are located at the intersection of terrestrial ecosystems and aquatic ecosystems, the long-term shortage of fresh water resources has caused serious salinization, and the groundwater level of saline water is high and the amount of water is large. It also seriously restricts the landscaping work in this type of area. In known technology, existing greening technology mainly concentrates on the local isolation of planting area, the method of community salt discharge and greening area replacement soil, and these technical measures are better in the area of ​​shallow groundwater table ...

AI Technical Summary

Problems solved by technology

However, since most of these areas are located at the intersection of terrestrial ecosystems and aquatic ecosystems, the long-term shortage of fresh water resources has caused serious salinization, and the groundwater level of saline water is high and the amount of water is large. It also seriously restricts the landscaping work in this type of area.

In known technology, existing greening technology mainly concentrates on the local isolation of planting area, the method of community salt discharge and greening area replacement soil, and these technical measures are better in the area of ​​shallow groundwater table (being below 1.5 meters of groundwater table) area effect , but in saline soil areas with higher groundwater level (that is, the groundwater level is above 1.0 meters), the application effect often shows poor drainage and salt discharge effect, short duration of green landscape, huge cost of changing soil and damage to good soil resources. Secondary damage and other disadvantages

An improved greening technology is to isolate the soil as a whole, lay salt (water) pipes at the bottom, and replace the soil. It solves the problem that the greening effect of shallow water level saline soil is short, but there are still problems of changing the soil. High cost of soil and serious damage to good soil resources, these shortcomings and deficiencies are still important factors limiting the level of greening

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