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Method for improving saline and alkaline land through ardealite, DMTU and biological bacteria

A technology of dimethylene triurea and phosphogypsum, which is applied in the field of saline-alkali land treatment, can solve the problems of complex production process, high cost, and inability to be popularized in a large area, so as to reduce soil bulk density, increase organic matter content, and increase water permeability Effect

Inactive Publication Date: 2015-12-16
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, high cost and other conditions, it cannot be popularized in a large area

Method used

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  • Method for improving saline and alkaline land through ardealite, DMTU and biological bacteria
  • Method for improving saline and alkaline land through ardealite, DMTU and biological bacteria
  • Method for improving saline and alkaline land through ardealite, DMTU and biological bacteria

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] 1. Raw material preparation

[0039] Phosphogypsum;

[0040] Trimethylene diurea, the structural formula is:

[0041]

[0042] The curing agent can be at least one of zinc sulfate, trimethyl phosphate, diethyl oxalate, oxalic acid, and phthalic acid, and zinc sulfate is selected in this embodiment;

[0043] The modifying agent can be at least one of polyethylene glycol and hydroxymethyl cellulose, and polyethylene glycol is selected in this embodiment;

[0044] straw;

[0045] Animal manure, pig manure, cow manure, sheep manure, chicken manure, etc. are optional, and pig manure is selected in this embodiment;

[0046] Biological bacteria, including Bacillus subtilis, salt-tolerant Azospirillum brasiliensis, saline-alkali tolerant phospholytic bacteria, Saccharomyces cerevisiae, alkaliphilic bacteria, cellulolytic bacteria, and the number of live bacteria of each biological bacteria in the biological bacteria is 1×10 3～5 More than cfu / g;

[0047] 2. A method for...

Embodiment 2

[0057] 1. Raw material preparation

[0058] Phosphogypsum;

[0059] Trimethylene diurea, the structural formula is:

[0060]

[0061] The curing agent can be at least one of zinc sulfate, trimethyl phosphate, diethyl oxalate, oxalic acid, and phthalic acid, and zinc sulfate is selected in this embodiment;

[0062] The modifying agent can be at least one of polyethylene glycol and hydroxymethyl cellulose, and polyethylene glycol is selected in this embodiment;

[0063] straw;

[0064] Animal manure, pig manure, cow manure, sheep manure, chicken manure, etc. are optional, and pig manure is selected in this embodiment;

[0065] Biological bacteria, including Bacillus subtilis, salt-tolerant Azospirillum brasiliensis, saline-alkali tolerant phospholytic bacteria, Saccharomyces cerevisiae, alkaliphilic bacteria, cellulolytic bacteria, and the number of live bacteria of each biological bacteria in the biological bacteria is 1×10 3～5 More than cfu / g;

[0066] 2. A method for...

Embodiment 3

[0076] 1. Raw material preparation

[0077] Phosphogypsum;

[0078] Trimethylene diurea, the structural formula is:

[0079]

[0080] The curing agent can be at least one of zinc sulfate, trimethyl phosphate, diethyl oxalate, oxalic acid, and phthalic acid, and zinc sulfate is selected in this embodiment;

[0081] The modifying agent can be at least one of polyethylene glycol and hydroxymethyl cellulose, and polyethylene glycol is selected in this embodiment;

[0082] straw;

[0083] Animal manure, pig manure, cow manure, sheep manure, chicken manure, etc. are optional, and pig manure is selected in this embodiment;

[0084] Biological bacteria, including Bacillus subtilis, salt-tolerant Azospirillum brasiliensis, saline-alkali tolerant phospholytic bacteria, Saccharomyces cerevisiae, alkaliphilic bacteria, cellulolytic bacteria, and the number of live bacteria of each biological bacteria in the biological bacteria is 1×10 3～5 More than cfu / g;

[0085] 2. A method for...

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Abstract

The invention provides a method for improving saline and alkaline land through ardealite, DMTU and biological bacteria. The method includes the steps that first, the land is treated with ardealite; then, the land is treated with a mixture of DMTU, a curing agent and an improver; finally, the land is treated with a material obtained after mixed treatment of straw and biological bacteria. By the adoption of the method for improving the saline and alkaline land, saline and alkaline soil can be rapidly improved to be suitable for crop growth; besides, the improver is wide in application range and suitable for soil improvement on soil salinization and alkalinization caused by different reasons in different areas and can improve the soil structure, lower soil alkalinity, increase the soil salt rejection ratio, improve soil fertility, promote crop growth and improve agricultural economy when reasonably applied into soil.

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+dimethylene triurea+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 distributed on the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01B79/02C09K17/40C09K101/00C09K109/00
Inventor 赵先明陈彬魏发展廖吉星孙志梅周勇
Owner GUIZHOU KAILIN GRP CO LTD
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