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

A technology of dimethylene triurea and saline-alkali land, which is applied in the field of saline-alkali land treatment, can solve the problems of high cost, inability to be popularized in a large area, complicated production process, etc., and achieve the goal of increasing bacterial content, increasing water permeability, and reducing soil bulk density 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, EDTA and biological bacteria
  • Method for improving saline and alkaline land through ardealite, DMTU, EDTA and biological bacteria
  • Method for improving saline and alkaline land through ardealite, DMTU, EDTA and biological bacteria

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] 1. Raw material preparation

[0041] Phosphogypsum;

[0042] Dimethylene triurea, its structural formula is:

[0043]

[0044] The curing agent is a mixture of zinc sulfate, trimethyl phosphate and diethyl oxalate in equal proportions;

[0045] A modifying agent is a mixture of polyethylene glycol and hydroxymethyl cellulose in equal proportions;

[0046] EDTA;

[0047] straw;

[0048] Animal manure, pig manure, cow manure, sheep manure, chicken manure, etc. are optional, and pig manure is selected in this embodiment;

[0049] Biological bacteria, including Bacillus subtilis, salt-tolerant Azospirillum brasiliensis, saline-alkali tolerant phosphobacteria, Saccharomyces cerevisiae, alkaliphilic bacteria, and cellulolytic bacteria. The number of viable bacteria in each biological bacteria is 1×10 3～4 More than cfu / g.

[0050] 2. The method for improving saline-alkali land with phosphogypsum+dimethylene triurea+EDTA+biological bacteria includes the following steps:...

Embodiment 2

[0061] 1. Raw material preparation

[0062] Phosphogypsum;

[0063] Dimethylene triurea, its structural formula is:

[0064]

[0065] The curing agent is a mixture of zinc sulfate, trimethyl phosphate and diethyl oxalate in equal proportions;

[0066] A modifying agent is a mixture of polyethylene glycol and hydroxymethyl cellulose in equal proportions;

[0067] EDTA;

[0068] straw;

[0069] Animal manure, pig manure, cow manure, sheep manure, chicken manure, etc. are optional, and pig manure is selected in this embodiment;

[0070] Biological bacteria, including Bacillus subtilis, salt-tolerant Azospirillum brasiliensis, saline-alkali tolerant phosphobacteria, Saccharomyces cerevisiae, alkaliphilic bacteria, and cellulolytic bacteria. The number of viable bacteria in each biological bacteria is 1×10 3～4 More than cfu / g.

[0071] 2. The method for improving saline-alkali land with phosphogypsum+dimethylene triurea+EDTA+biological bacteria includes the following step...

Embodiment 3

[0082] 1. Raw material preparation

[0083] Phosphogypsum;

[0084] Dimethylene triurea, its structural formula is:

[0085]

[0086] The curing agent is a mixture of zinc sulfate, trimethyl phosphate and diethyl oxalate in equal proportions;

[0087] A modifying agent is a mixture of polyethylene glycol and hydroxymethyl cellulose in equal proportions;

[0088] EDTA;

[0089] straw;

[0090] Animal manure, pig manure, cow manure, sheep manure, chicken manure, etc. are optional, and pig manure is selected in this embodiment;

[0091] Biological bacteria, including Bacillus subtilis, salt-tolerant Azospirillum brasiliensis, saline-alkali tolerant phosphobacteria, Saccharomyces cerevisiae, alkaliphilic bacteria, and cellulolytic bacteria. The number of viable bacteria in each biological bacteria is 1×10 3～4 More than cfu / g.

[0092] 2. The method for improving saline-alkali land with phosphogypsum+dimethylene triurea+EDTA+biological bacteria includes the following step...

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Abstract

The invention provides a method for improving saline and alkaline land through ardealite, DMTU, EDTA 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; then, the land is treated with EDTA; 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+EDTA+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...

Claims

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Application Information

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IPC IPC(8): A01B79/02C09K17/40C09K109/00
Inventor 杜绍伦陈彬魏发展廖吉星蒋俊蕊
Owner GUIZHOU KAILIN GRP CO LTD
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