Combined nested barrel type saline-alkali soil treatment method and nested barrel for treatment

Abstract

The invention discloses a combined nested barrel type saline-alkali soil treatment method and a nested barrel for treatment. An outer barrel is buried deep in a natural soil layer of saline-alkali soil, the barrel body bottom of the outer barrel is provided with outer barrel side holes which are covered with a salt-permeable film, the inner barrel is fixed in the center of the inside of the outerbarrel, and the barrel body bottom of the inner barrel is provided with inner barrel side holes which are covered with a semipermeable film; the inner barrel is filled with soil and organic fertilizeror living microbe fertilizer for vegetation planting, and a soil lining layer fills between the outer barrel and the inner barrel to support the inner barrel to stablize and transfer moisture; the soil lining layer between the inner barrel and the outer barrel is periodically cleaned off and transferred for treatment, and as the frequency of cleaning is increased, salt around the outer barrel isgradually reduced until being thoroughly eliminated. The invention can gradually allow the salt around the outer barrel to enter the bottom layer of the area between the inner barrel and the outer barrel, and by periodically cleaning off the saline and alkaline ingredients of the bottom layer of the area between the inner barrel and the outer barrel, the objective of gradually reducing the salineand alkaline ingredients around the outer barrel can be achieved. Moreover, by the ecological restoring and improving effects of a biological method on the saline-alkali soil, the objective of thoroughly treating the saline-alkali soil can be ultimately achieved.

Description

technical field [0001] The invention belongs to the field of saline-alkali land treatment, and in particular relates to a treatment technology for gradually removing the salinity of saline-alkali land by using combined double barrels and double permeable membranes. Background technique [0002] Saline-alkali land means that the salt contained in the soil affects the normal growth of crops. Ecological restoration and improvement of saline-alkali land is a project that benefits the country and the people. It can increase the area of ​​cultivated land, tap agricultural potential, and is more conducive to the development of the agricultural industry. According to incomplete statistics from UNESCO and FAO, the area of ​​saline-alkali land in the world is 954.38 million hectares, of which 9.913 million hectares are in my country. Most of the formation of alkaline soil and alkalized soil in my country is related to the accumulation of carbonate in the soil For example, in my country...

AI Technical Summary

Problems solved by technology

However, relying solely on biological methods for ecological restoration of saline-alkali land, the living environment of organisms is poor, and there is a defect that it takes a long time to achieve results.

The invention application document with the publication number CN108432396A "A device and method for seed germination in saline-alkaline stress" describes a shell that can prevent external salt from entering the interior and allow water to enter the interior. At the same time, it will cause the salt to accumulate around the permeable hole of the shell. A small amount of salt gathered around the permeable shell will help absorb the surrounding water and provide water for the shell. However, a large amount of salt accumulated around the permeable hole of the shell for a long time will Become a water-blocking barrier, which is not conducive to the continuous entry of water into the shell to meet the growth of plants

Moreover, this scheme is only used to provide a small amount of vegetation, but it cannot improve the saline-alkali composition of saline-alkali land, and cannot achieve the effect of controlling and improving saline-alkali land

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