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A saline-alkali soil improvement system and its improvement method

A technology for soil improvement and saline-alkali land, which is applied in the saline-alkali soil improvement system and its improvement field, and can solve problems such as inability to accurately identify sodium salts

Active Publication Date: 2022-03-18
吉林省闻名生态农业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Water conservancy improvement can directly take away the salt in the soil during the water washing process, but in actual production, the above improvement methods tend to wash away the beneficial mineral elements in the soil during the process of washing away the salt, so the sodium salt cannot be accurately identified. Achieve precise desalination

Method used

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  • A saline-alkali soil improvement system and its improvement method

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Embodiment 1

[0035] Please refer to figure 1 , This embodiment provides a soil improvement system for saline-alkali land, which includes a soil water isolation system 110, a sprinkler irrigation system 120, a drainage system 130, an acid-base pool 140 for adjusting pH, and a desodination pool 150 for removing sodium ions. The leaching water passes through the sprinkler irrigation system 120 , the saline-alkali soil 180 , the drainage system 130 , the acid-base pool 140 and the desodination pool 150 in sequence, and then returns to the sprinkler irrigation system 120 .

[0036] Please continue to refer to figure 1The soil water isolation system 110 includes a cofferdam 111 arranged on the periphery of the saline-alkali land 190 and a moisture isolation layer 112 buried in the soil 180 of the saline-alkali land. The water isolation layer 112 is set at a soil depth of 1.2m to prevent excessive washing water from flowing deeper into the saline-alkali soil 180 . During the process of spraying...

Embodiment 2

[0045] The present embodiment provides a kind of control method of saline-alkali land, comprises the following steps:

[0046] Put 17L of analytically pure N,N-dimethylacetamide, 0.6kg of analytically pure 15-crown-5, 0.5kg of analytically pure polyethersulfone, 15g of analytically pure polyethersulfone, and 15g of analytically pure lithium chloride in a 25L reactor The casting solution is fully stirred and mixed in the medium to form the casting solution; the casting solution is allowed to stand at a temperature of 25 degrees for 1 day for degassing; during the standing process, it can not only degas and defoam, but also mature the casting solution. The casting solution after standing still is stretched into a 15-crown-5 / polyethersulfone composite film with a film casting machine.

Embodiment 3

[0048] The present embodiment provides a kind of control method of saline-alkali land, comprises the following steps:

[0049] Put 15L of analytically pure N,N-dimethylacetamide, 0.55kg of analytically pure 15-crown-5, 0.5kg of analytically pure polyethersulfone, 10g of analytically pure polyethersulfone, and 10g of analytically pure lithium chloride in a 25L reactor The casting solution is fully stirred and mixed in the medium to form the casting solution; the casting solution is left to stand for 1.5 days at a temperature of 25 degrees for degassing; during the standing process, it can not only degas and defoam, but also mature the casting solution. The casting solution after standing still is stretched into a 15-crown-5 / polyethersulfone composite membrane with a casting machine.

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Abstract

The invention relates to the technical field of saline-alkali soil improvement, and provides a saline-alkali soil improvement system and an improvement method thereof. The above-mentioned saline-alkali soil improvement system includes a sprinkler irrigation system through which washing water passes sequentially, saline-alkali soil, a drainage system, an acid-base pool, and a desalination pool with a 15‑crown‑5 / polyethersulfone composite membrane, and a soil water isolation system. A method for improving soil in saline-alkali land comprises washing the soil with the first washing water to obtain the second washing water, the second washing water is sent to the acid-base pool through the drainage system, and the pH of the second washing water is adjusted to 6.8 in the acid-base pool After ~7.3, the third washing water is obtained; the third washing water is sent to the desodium pool, and the fourth washing water is obtained after the 15-crown-5 / polyethersulfone composite membrane desodiumizes; the fourth washing water returns Saline land. The above saline-alkali soil improvement system and its improvement method realize precise desalination of saline-alkali soil and return the original minerals in the soil to the soil.

Description

technical field [0001] The invention relates to the technical field of saline-alkali soil improvement, in particular to a saline-alkali soil improvement system and an improvement method thereof. Background technique [0002] Since human civilization, people have used land to produce necessary food. However, with the advancement of civilization, people's excessive use of land has gradually reduced the area of ​​cultivated land. Today, fresh water resources are extremely scarce, and the problem of saline-alkali land is prominent. Saline-alkali land is a general term for various saline soils, alkaline soils and salinized and alkalized soils. The saline-alkali geochemical properties are poor, the soil fertility is low, and a large amount of salt accumulates on the surface, which is not conducive to the growth of crops and plants. At present, my country's saline-alkali land area ranks third in the world. As an important land resource, soil salinization has seriously affected ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01B79/00
CPCA01B79/00
Inventor 王彩花陈林
Owner 吉林省闻名生态农业有限公司