Method for improving saline-alkali soil by flat laying deep ploughing application of desulfurized gypsum

A technology for desulfurizing gypsum and saline-alkali land, which is applied in the direction of site preparation methods, chemical instruments and methods, applications, etc., can solve problems such as poor treatment effects, and achieve the effect of improving treatment effects

Inactive Publication Date: 2016-12-07
SHANDONG SUNWAY LANDSCAPE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the treatment of saline-alkali land, we often treat the soil at different depths uniformly, which brings certain problems to the treatment of saline-alkali land an

Method used

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Examples

Experimental program
Comparison scheme
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Example Embodiment

[0017] Example 1

[0018] A method for improving saline-alkali land by applying desulfurized gypsum for flat laying and deep plowing, the method for improving saline-alkali land by applying desulfurized gypsum for flat laying and deep plowing, the specific steps are as follows:

[0019] S1: The ratio of improved materials. The improved material is a mixture of desulfurized gypsum and modifier. The weight ratio of desulfurized gypsum and modifier is 20:1. Fully stir and mix the desulfurized gypsum and modifier to avoid uneven mixing. occurrence, the amount of improvement materials per mu of land is 2 tons;

[0020] S2: For the treatment of saline-alkali surface soil, use bulldozers to push away 6 cm of saline-alkali surface soil and pile it up in one place for later use;

[0021] S3: Spread improved materials on the saline-alkali land where the surface soil has been removed. The amount of paving is one-third of the total amount of improved materials required per mu of land. Th...

Example Embodiment

[0029] Example 2

[0030] A method for improving saline-alkali land by applying desulfurized gypsum for flat laying and deep plowing, the method for improving saline-alkali land by applying desulfurized gypsum for flat laying and deep plowing, the specific steps are as follows:

[0031] S1: The ratio of improved materials. The improved material is a mixture of desulfurized gypsum and modifier. The weight ratio of desulfurized gypsum and modifier is 20:1. Fully stir and mix the desulfurized gypsum and modifier to avoid uneven mixing. occurrence, the amount of improvement materials per mu of land is 2 tons;

[0032] S2: For the treatment of saline-alkali surface soil, use bulldozers to push away 7 cm of saline-alkali surface soil and pile it up in one place for later use;

[0033] S3: Spread improved materials on the saline-alkali land where the surface soil has been removed. The amount of paving is one-third of the total amount of improved materials required per mu of land. Th...

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Abstract

The invention discloses a method for improving saline-alkali soil by flat laying deep ploughing application of desulfurized gypsum. The method for improving saline-alkali soil by flat laying deep ploughing application of the desulfurized gypsum comprises a step S1 of performing matching of an improved material; a step S2 of treating saline-alkali soil surface layer soil; a step S3 of flatly laying the improved material on the saline-alkali soil where surface layer soil is removed; a step S4 of performing deep ploughing treatment; a step S5 of mixing the surface layer soil and the improved material; and a step S6 of performing irrigation. According to the method, different treatment modes are adopted for soils of different depths, the deep layer soil with a relatively low salinization degree is treated through a small amount of improved material, the surface layer soil with a high salinization degree is treated through a large amount of improved material, treatment of separating the different soils is achieved, and the saline-alkali soil treatment effect is improved.

Description

technical field [0001] The invention relates to the technical field of improvement of saline-alkali land, in particular to a method for improving saline-alkali land by flat laying and deep plowing and applying desulfurized gypsum. Background technique [0002] Desulfurization gypsum is also known as exhaust gas desulfurization gypsum, sulfur gypsum or FGD gypsum. The main component is the same as natural gypsum, calcium sulfate dihydrate CaSO4.2H2O, with a content of ≥93%. Desulfurization gypsum is an industrial by-product gypsum obtained by coal or oil-burning industrial enterprises after treating sulfur dioxide in flue gas. Its processing and utilization are of great significance. It not only effectively promotes the further development of the national environmental protection circular economy, but also greatly reduces the mining amount of ore gypsum and protects resources. Desulfurization gypsum has a good effect on the treatment of saline-alkali land. Saline-alkali lan...

Claims

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Application Information

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IPC IPC(8): A01B79/02C09K17/40C09K101/00C09K109/00
CPCA01B79/02C09K17/40C09K2101/00C09K2109/00
Inventor 王胜
Owner SHANDONG SUNWAY LANDSCAPE TECH
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