Greening method of heavily saline original soil in arid area

Abstract

The invention discloses an arid region heavily-salted original soil afforesting method. The arid region heavily-salted original soil afforesting method includes the steps that sand doping is firstly carried out to improve the physical structure of soil in a planting area, annual growth halophyte is planted in the first year to achieve afforesting and soil partial desalting, ridging is carried out in the second year to construct furrow terrains, tamarix chinensis, amorpha fruticosa and sweet clover which are resistant to salt are planted on ridges in a trickle irrigation mode to achieve biological salt moving and soil fertilizing, and suaeda salsa is planted in furrows in a trickle irrigation mode to increase the earth surface cover degree, improve physical-chemical properties of soil and desalt the soil. By means of the arid region heavily-salted original soil afforesting method, the physical improvement and the biological improvement of the salted soil are integrated, the technical measures of furrow cultivation and water saving trickle irrigation are combined, the arid region heavily-salted original soil afforesting method is easy and convenient to operate and low in cost, and the stability and the sustainability of the heavily-salted original soil afforesting are achieved.

Description

technical field [0001] The invention discloses a method for afforesting heavily saline original soil in arid areas, in particular to a method for improving saline soil mixed with sand, planting annual halophytes, and cultivating halophytes and green manure plants in sequence for afforestation and soil improvement method. Background technique [0002] The saline-alkali soil is widely distributed in the arid region of western my country, and many cities are distributed in saline-alkali areas in the state of "oasis". Salinized soil is often an obstacle that people often encounter when transforming their living environment and implementing greening projects. The large area of ​​saline soil restricts the improvement of urban greening and overall environmental quality. Saline soil generally has the characteristics of high soil bulk density, viscosity, poor air permeability, low permeability coefficient, and strong capillary action. Excessive salinity in the soil can reduce the ...

AI Technical Summary

Problems solved by technology

In agricultural production, people often use "flood irrigation and salt pressure" to wash off excess soil salt, but this method requires high drainage facilities, costs a lot and consumes a lot of fresh water resources

The more commonly used method for saline soil greening is foreign soil replacement, that is, non-saline soil substrate is used to replace the saline soil at a certain depth, and greening is carried out on the foreign soil after isolation measures, which usually have high cost and low follow-up survival rate problems, and it is difficult to achieve a stable and sustainable greening system