A Quick Restoration Method for Saline-alkali Land

A technology for rapid recovery and saline-alkali land, applied in the field of soil restoration, can solve problems such as improper farming management, only irrigation without drainage, flood irrigation, etc., to achieve the effect of reducing loss, slowing down infiltration, and reducing the formation of anti-salt channels

Active Publication Date: 2022-03-22
NORTHWEST INST OF ECO ENVIRONMENT & RESOURCES CAS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] 5. Improper farming management; some places are flooded with water when watering, or low-lying areas are only irrigated but not drained, so that the groundwater table rises quickly and salt accumulates, turning the original good land into saline-alkali land. This process is called secondary salt Degradation

Method used

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  • A Quick Restoration Method for Saline-alkali Land
  • A Quick Restoration Method for Saline-alkali Land

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] Shaanxi Lubotan saline-alkali land test field a, with an area of ​​1.3 mu, the soil pH value before restoration was 9.42; the restoration method is as follows:

[0061] 1) Plowing the soil;

[0062] The test field a soil is leveled, and then the leveled test field a is plowed 3 times, and the depth of plowing is 65 cm;

[0063] 2) Restoration agent pouring;

[0064] Pour tap water to the test field a, the tap water pouring height is 10 centimeters from the soil surface, and discharge after soaking for 10 days; then pour the recovery agent pouring height to test field a 10 centimeters from the soil surface, and discharge after soaking for 10 days;

[0065] The recovery agent contains the following components: humic acid, ferrous sulfate, phosphogypsum and water;

[0066] 3) Buffer layer laying;

[0067] The soil after pouring is removed, and the depth of removal is 70 cm; then a buffer layer is laid; the buffer layer is followed by a gravel layer, a fine sand layer, a...

Embodiment 2

[0090] Shaanxi Lubotan saline-alkali land test field b, with an area of ​​1.9 mu, and the soil pH value before restoration was 9.87;

[0091] On the basis of embodiment 1, in the present embodiment:

[0092] A hot rod is buried in the sand layer, and the temperature of the hot rod is 60°C;

[0093] A hot rod is buried in the guest soil layer, and the temperature of the hot rod is 40°C.

[0094] The planting soil layer also includes guest soil, and the weight of guest soil in the planting soil layer accounts for 50% of the total planting soil.

[0095] A non-woven fabric layer is also laid between the buffer layer and the nutrient layer, and a diameter of 1 cm is evenly arranged on the non-woven fabric. 2 pores, the density of the pores is set to 100 / m 2 .

[0096] In the process of completing the restoration of the above-mentioned saline-alkali land, the pH value was measured once a month after the planting was completed, and the results were as follows:

[0097]

[00...

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Abstract

The present invention relates to the technical field of soil remediation, in particular to a rapid restoration method for saline-alkali land, comprising the following steps: plowing the soil, pouring the restoration agent, laying the buffer layer, laying the nutrient layer, laying the planting soil layer, pouring the nutrient agent, cultivating saprophytes Cultivation, plant growing and maintenance. Compared with the prior art, a quick recovery method for saline-alkali soil provided by the present invention uses a recovery agent prepared from humic acid, ferrous sulfate, phosphogypsum and water to soak the soil, and realizes the recovery of saline-alkali soil. Vitality recovery and accumulation of nutrients; and the porosity of the original soil soaked with the recovery agent is reduced, reducing the formation of anti-salt channels in the later stage.

Description

technical field [0001] The invention relates to the technical field of soil remediation, in particular to a rapid restoration method for 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. According to the incomplete statistics of UNESCO and FAO, the area of ​​saline-alkali land in the world is 954.38 million hectares, of which my country is the largest 99.13 million hectares. The formation of alkaline soil and alkalized soil in my country is mostly related to the accumulation of carbonate in the soil, so the degree of alkalization is generally high, and plants in severe saline-alkali soil areas can hardly survive. [0003] All kinds of saline-alkali soils are formed under certain natural conditions. The essence of their formation is mainly the redistribution of various soluble salts in the horizontal and vertical directions on the ground, so t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01B79/00
CPCA01B79/00
Inventor 冯起郭瑞贾冰席海洋杨林山
Owner NORTHWEST INST OF ECO ENVIRONMENT & RESOURCES CAS
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