Embedded double-effect remediation method based on saline-alkali soil

Abstract

The invention discloses an embedded double-effect remediation method based on saline-alkali soil, and belongs to the technical field of saline-alkali soil remediation. Film-covered flow guide cavities and a heat storage crystallization cavity which are communicated with each other are formed in an saline-alkali soil layer, water is perfused into the saline-alkali soil layer by multiple embedded perfusion pipes, water is guided to the heat storage crystallization cavity through the multiple film-covered flow guide cavities to achieve a large-area transverse leaching effect on soil of the saline-alkali soil layer, and water with salt is adsorbed by a water guide layer under the drainage effect. Due to cooperation of a light absorption and heat storage layer and a heat conductor in a crystallization box, the temperature in the crystallization box is increased, and the water adsorbed to the water guide layer is heated to evaporate and crystallize on a crystallization surface layer with a certain temperature, the soil surface layer and salt below the soil surface layer can be sufficiently and transversely leached and separated out in a large area, the application efficiency is high, the remediation time is short, a good moisturizing effect is achieved while salt is effectively removed, and a double-effect remediation effect is achieved.

Description

technical field [0001] The invention relates to the technical field of saline-alkali land restoration, more specifically, to a pre-embedded double-effect restoration method based on saline-alkali land. Background technique [0002] Saline-alkali land is a type of salt accumulation, which means that the salt contained in the soil affects the normal growth of crops. Most of the saline-alkali land is related to the accumulation of carbonate in the soil, so the degree of alkalinity is generally high, and severe salt Plants in alkaline soil areas can hardly survive. All kinds of saline-alkali soils are formed under certain natural conditions. The soil surface layer gradually builds up in salt-collecting areas. The accumulation of salinity in soil is the result of the superposition of a series of natural and human factors acting on different temporal and spatial scales. Soil salinization seriously restricts agricultural development, improving and restoring large areas of saline-...

AI Technical Summary

Problems solved by technology

The physical method is mainly based on leaching and salt discharge, combined with plowing, leaching, silting and other measures to achieve the purpose of improving saline-alkaline soil; the chemical method is to reduce the saline-alkaline soil by adding some acidic chemicals and organic polymer materials, combined with organic fertilizers. The degree of soil salinization, but both methods have problems such as high cost, easy to cause secondary pollution of soil and surrounding water sources, and it is not easy to reduce the soil salinity content

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