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Method for improving saline-alkali soil through ardealite, slow-release binder, EDTA, straw and biological bacteria

A slow-release binder and phosphogypsum technology, which is applied in the field of saline-alkali land treatment, can solve the problems of inability to be popularized in a large area, poor treatment effect, complicated production process, etc., and achieve the effects of increasing water permeability, reducing bulk density and low solubility

Inactive Publication Date: 2015-12-09
GUIZHOU KAILIN GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are many soil amendments for chemical treatment of soil salinization, such as gypsum, calcium sulfate, superphosphate, industrial waste phosphogypsum, industrial waste acid, organic fertilizer, humic acid, fly ash, peat, fermented vinegar These have achieved certain effects on improving saline-alkali land. More commonly used are organic fertilizers and gypsum, of which gypsum is made of Ca 2+ Substitution of Na + And use acid to neutralize alkali to improve saline-alkali land; but limited by complex production process, poor treatment effect and other conditions, it cannot be popularized in a large area

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] 1. Raw material preparation

[0039] Phosphogypsum,

[0040] The slow-release binder is composed of the following raw materials in parts by weight: 20 parts of macromolecular substances, 1 part of zinc sulfate, and 1 part of polyethylene glycol, wherein: the structural formula of macromolecular substances is: H-[OCH 2 NHCONHCH 2 ]n-OH, where 2≤n≤10, the present embodiment selects n=2; and all the above-mentioned raw materials are stored separately and mixed when used,

[0041] EDTA,

[0042] straw,

[0043] Animal manure, optional pig manure, cow manure, chicken manure, sheep manure, etc., the present embodiment selects pig manure,

[0044] Biological bacteria are at least one of Bacillus subtilis, halo-tolerant Azospirillum brasiliensis, Saccharomyces cerevisiae, and Trichoderma reesei. In this embodiment, Bacillus subtilis and halo-tolerant Azospirillum brasiliensis are selected. The number of live bacteria is 1×10 3～4 More than cfu / g.

[0045]2. A method for i...

Embodiment 2

[0056] 1. Raw material preparation

[0057] Phosphogypsum,

[0058] The slow-release adhesive is composed of the following raw materials in parts by weight: 40 parts of macromolecular substances, 4 parts of zinc sulfate, and 4 parts of polyethylene glycol, wherein: the structural formula of macromolecular substances is: H-[OCH2NHCONHCH2]n-OH, wherein 2≤n≤10, the present embodiment selects n=10; and all above-mentioned raw materials are all stored separately, mix when using,

[0059] straw,

[0060] Animal manure, optional pig manure, cow manure, chicken manure, sheep manure, etc., the present embodiment selects pig manure,

[0061] Biological bacteria are at least one of Bacillus subtilis, halo-tolerant Azospirillum brasiliensis, Saccharomyces cerevisiae, and Trichoderma reesei. In this embodiment, Bacillus subtilis and halo-tolerant Azospirillum brasiliensis are selected. The number of live bacteria is 1×10 3～4 More than cfu / g.

[0062] 2. A method for improving saline-a...

Embodiment 3

[0073] 1. Raw material preparation

[0074] Phosphogypsum,

[0075] The slow-release adhesive is composed of the following raw materials in parts by weight: 30 parts of macromolecular substances, 2 parts of zinc sulfate, and 3 parts of polyethylene glycol, wherein: the structural formula of macromolecular substances is: H-[OCH 2 NHCONHCH 2 ] n-OH, where 2≤n≤10, the present embodiment selects n=6; and all the above-mentioned raw materials are stored separately and mixed when used,

[0076] straw,

[0077] Animal manure, optional pig manure, cow manure, chicken manure, sheep manure, etc., the present embodiment selects pig manure,

[0078] Biological bacteria are at least one of Bacillus subtilis, halo-tolerant Azospirillum brasiliensis, Saccharomyces cerevisiae, and Trichoderma reesei. In this embodiment, Bacillus subtilis and halo-tolerant Azospirillum brasiliensis are selected. The number of live bacteria is 1×10 3～4 More than cfu / g.

[0079] 2. A method for improving s...

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PUM

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Abstract

The invention provides a method for improving saline-alkali soil through ardealite, a slow-release binder, EDTA, straw and biological bacteria. The method includes the steps that first, the ardealite is used for treatment; then the slow-release binder is used for treatment; afterwards, the EDTA is used for treatment; finally, a mixed material of the straw and the biological bacteria is used for treatment. By the adoption of the method for improving the saline-alkali soil, the saline-alkali soil can be improved quickly and is made to be suitable for growth of crops; besides, the application range of the modifying agent is wide, the modifying agent is suitable for improvement of soil alkalization in different areas and for different reasons, the modifying agent is applied to the soil reasonably, and the soil structure can be improved; the soil alkalinity is lowered, the salt elimination rate of the soil is increased, the soil fertility is improved, the growth of the crops is promoted, and agricultural economy is improved.

Description

technical field [0001] The invention relates to the technical field of saline-alkali land treatment, in particular to a method for improving saline-alkali land by using phosphogypsum, a slow-release binder, EDTA, straw and biological bacteria. Background technique [0002] Saline-alkali land is a general term for saline soil, alkaline soil and various salinized and alkalized soils. Saline soil refers to the soil in which the soluble salt content in the soil reaches a certain level, which can cause obvious harm to the growth and development of plants. Alkaline soil refers to the soil that contains a large amount of exchangeable ions in the soil, and the amount reaches the level that can harm the growth and development of plants and change the soil properties. In actual conditions, saline soil and alkaline soil often coexist in a mixed form, collectively referred to as saline-alkali soil. [0003] Saline-alkali land is an important land resource, and it is a soil type widely...

Claims

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Application Information

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IPC IPC(8): A01B79/02C05G3/00
Inventor 徐魁魏发展廖吉星孙志梅周勇
Owner GUIZHOU KAILIN GRP CO LTD
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