Salinized soil composite restoration method effectively inhibiting salinization

A composite restoration and soil technology, which is applied in the direction of site preparation methods, soil conditioning materials, chemical instruments and methods, etc., can solve the problems that the problem of saline soil back-salt has not been paid enough attention to and effectively solved, and achieve the purpose of inhibiting soil back-salt , the effect of improving physical properties

Inactive Publication Date: 2016-09-21
FUJIAN AGRI & FORESTRY UNIV
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Problems solved by technology

At this stage, there have been many studies on reducing the salinity of coastal soils, and a lot of results have been achieved, but relatively spea

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  • Salinized soil composite restoration method effectively inhibiting salinization
  • Salinized soil composite restoration method effectively inhibiting salinization
  • Salinized soil composite restoration method effectively inhibiting salinization

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[0015] Example 1

[0016] A composite remediation method for saline soil that effectively inhibits salt return includes the following steps: excavation of the earth, laying an isolation layer, plowing the soil, applying organic-inorganic compound fertilizer, irrigation and washing, and straw mulching. The specific steps are as follows:

[0017] (1) Excavation of earthwork and laying isolation layer: excavate earthwork to a depth of 50 cm of the soil, and evenly pave 0.5 kg / m 2 Desulfurization gypsum cushion, 3~8 cm air-dried rice straw section is laid on the desulfurization gypsum cushion, and the thickness of the rice straw section is 7.5 cm to form a desulfurization gypsum-straw isolation layer;

[0018] (2) Plowing soil: plowing the soil above the desulfurization gypsum-straw isolation layer, and sprinkling 200 kg / hm 2 Desulfurized gypsum, mixed with soil evenly;

[0019] (3) Apply organic-inorganic compound fertilizer: evenly apply 120 kg / mu chicken manure, 60 kg / mu cattle manure a...

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Abstract

The invention discloses a salinized soil composite restoration method effectively inhibiting salinization; the method comprises the following steps; soil excavation, laying an isolation layer, plowing soil, applying organic-inorganic composite fertilizer, irrigating and leaching, and covering straws; the salinized soil composite restoration method combines salinized soil physics, chemical and biological methods, uses the isolation layer to prevent deep salinity from transferring to the plowing layer, uses the straw coverage to reduce plowing layer soil surface evaporation, and applies desulfurized gypsum, biological modifier and organic-inorganic composite fertilizer to improve the salinized soil characteristics, thus effectively preventing soil salinization, and improving physics property of the plowing soil layer.

Description

technical field [0001] The invention relates to a saline soil composite restoration method for effectively inhibiting salt return, belonging to the field of agricultural water and soil engineering. Background technique [0002] Using the improved coastal saline soil as arable land has become an effective way to alleviate the shortage of arable land resources in coastal cities in my country. Coastal saline soil has the characteristics of high salt content and poor soil physical and chemical properties. At the same time, due to its special location, coastal saline soil is greatly affected by evaporation. At present, the commonly used improvement methods for coastal saline soil include underground pipe drainage, soil conditioner, mulching to suppress salt, and foreign soil replacement method, etc., but these methods have limitations to varying degrees. For example, the amount of underground pipe drainage is large, and the maintenance cost is high in the later period. It is ea...

Claims

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Application Information

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IPC IPC(8): A01B79/02C09K17/40C09K101/00
CPCA01B79/02C09K17/40C09K2101/00
Inventor 侯毛毛袁媛
Owner FUJIAN AGRI & FORESTRY UNIV
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