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Method for controlling saline-alkali soil by utilizing spartina anglica and mangrove

A technology of saline-alkali land and Spartina, applied in the field of biological purification, can solve problems such as high cost, rapid return to salt, and inability to solve salinity once and for all

Active Publication Date: 2020-03-24
湖南袁禾农业科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Biological measures, soil improver measures, agronomic measures, and selection of salt-resistant varieties, etc., are used in traditional technologies, but the effect is not obvious, the cost is too high, and salt returns quickly, which cannot solve the soil obstacle factor of saline-alkali once and for all.
The usual method of treating saline-alkali soil is only an auxiliary measure in farming, the salt is not completely removed from the soil, the salt returns quickly, the effect is not obvious, and the relative cost is high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] 1. Establish a ditch network system for saline-alkali land, pump out the remaining water in the ditch in time, so that the groundwater level is controlled below 1 meter (the upper limit of the groundwater level can be adjusted appropriately according to the setting of the soil planting crops).

[0021] 2. Use mechanized methods to dissolve and / or dilute the salt in the soil through fresh water or low-salinity water, press filter or centrifuge to separate the salt water, and use this method to repeatedly wash the salt to below the salt concentration that the crops can adapt to.

[0022] 3. Lay the salt-washed soil on the fine water isolation layer, so that gravity water can flow out of the capillary water isolation layer, and neither gravity water nor capillary water can enter the cultivation layer from bottom to top. Block the passage of capillary water rising.

[0023] 4. Including building mariculture factories with washing brine, developing mariculture, producing sal...

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Abstract

The invention discloses a method for controlling saline-alkali soil by utilizing spartina anglica and mangrove. According to the method for controlling the saline-alkali soil by utilizing the spartinaanglica and the mangrove, one-time input of mechanized salt leaching with fresh water is adopted so as to achieve permanent benefit, so that cost of the method is not high after allocation; and moreover, production can be significantly increased after the salt leaching so as to have the increased input rapidly compensated by production increment, so that the method is still a relatively economical and rational means. In addition, high-concentration salt water can be obtained after the salt leaching; and the high-concentration salt water can be comprehensively utilized. That is to say, the salt-containing water in the saline-alkali soil can be converted into seawater so as to develop a marine ecosystem, thereby developing seawater agriculture.

Description

Technical field: [0001] The invention relates to the field of biological purification, in particular to a method for controlling saline-alkali land by using Spartina and mangroves. Background technique: [0002] In arid areas, due to low rainfall and large evaporation, land salt accumulates on the surface through capillary action, forming saline-alkaline soil. In the salinization caused by this drought, the salt is mainly accumulated in the upper soil layer with a certain thickness, and the lower soil and groundwater are both fresh water. Therefore, as long as the salt in the cultivated soil layer is washed and appropriate measures are taken to prevent capillary anti-salt, It can solve the problem of excessive saline-alkali content in saline-alkali land at one time. [0003] Biological measures, soil improver measures, agronomic measures, and the selection of salt-resistant varieties, etc., are used in traditional techniques, but the effect is not obvious, the cost is too h...

Claims

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Application Information

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IPC IPC(8): A01B79/02A01G20/00A01G17/00
CPCA01B79/02A01G20/00A01G17/005
Inventor 胡爱生胡心宇
Owner 湖南袁禾农业科技有限公司
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