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Method for modifying saline-alkali soil by using phosphogypsum+1'3-dimethylol urea+EDTA+biological bacteria

A technology of bishydroxymethyl urea and saline-alkali land, 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., to increase water permeability, accelerate salt washing speed, and low solubility Effect

Inactive Publication Date: 2015-12-23
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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  • Method for modifying saline-alkali soil by using phosphogypsum+1'3-dimethylol urea+EDTA+biological bacteria
  • Method for modifying saline-alkali soil by using phosphogypsum+1'3-dimethylol urea+EDTA+biological bacteria
  • Method for modifying saline-alkali soil by using phosphogypsum+1'3-dimethylol urea+EDTA+biological bacteria

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A method for improving saline-alkali land with phosphogypsum+1'3-bishydroxymethylurea+EDTA+biological bacteria, specifically as follows:

[0041] 1. Raw material preparation

[0042] Phosphogypsum;

[0043] 1'3-bismethylolurea;

[0044] The curing agent is at least one of zinc sulfate, trimethyl phosphate, diethyl oxalate, oxalic acid, phthalic acid, benzoic acid, and monochloroacetic acid, and oxalic acid is selected in this embodiment.

[0045] EDTA;

[0046] straw;

[0047] Biological bacteria: including Bacillus subtilis, nitrogen-fixing cyanobacteria, halo-tolerant rhizobia, halo-tolerant Azospirillum brasiliensis, halo-tolerant Klebsiella nitrogen-fixing, saline-alkali-tolerant Phosphorus solubilis, Saccharomyces cerevisiae, Trichoderma reesei, nitrifying bacteria, Alkaline bacteria, cellulolytic bacteria; the number of viable bacteria in the biological bacteria is 1×10 6 More than cfu / g;

[0048] Material A: crush the straw, then add animal manure and biologi...

Embodiment 2

[0060] A method for improving saline-alkali land with phosphogypsum+1'3-bishydroxymethylurea+EDTA+biological bacteria, specifically as follows:

[0061] 1. Raw material preparation

[0062] Phosphogypsum;

[0063] 1'3-bismethylolurea;

[0064] The curing agent is at least one of zinc sulfate, trimethyl phosphate, diethyl oxalate, oxalic acid, phthalic acid, benzoic acid, and monochloroacetic acid. In this embodiment, zinc sulfate is selected;

[0065] EDTA;

[0066] straw;

[0067] Biological bacteria: including Bacillus subtilis, nitrogen-fixing cyanobacteria, halo-tolerant rhizobia, halo-tolerant Azospirillum brasiliensis, halo-tolerant Klebsiella nitrogen-fixing, saline-alkali-tolerant Phosphorus solubilis, Saccharomyces cerevisiae, Trichoderma reesei, nitrifying bacteria, Alkaline bacteria, cellulolytic bacteria; the number of viable bacteria in the biological bacteria is 1×10 6 More than cfu / g;

[0068] Material A: crush the straw, then add animal manure and biologi...

Embodiment 3

[0080] A method for improving saline-alkali land with phosphogypsum+1'3-bishydroxymethylurea+EDTA+biological bacteria, specifically as follows:

[0081] 1. Raw material preparation

[0082] Phosphogypsum;

[0083] 1'3-bismethylolurea;

[0084] The curing agent is at least one of zinc sulfate, trimethyl phosphate, diethyl oxalate, oxalic acid, phthalic acid, benzoic acid, and monochloroacetic acid, diethyl oxalate in this embodiment;

[0085] EDTA;

[0086] straw;

[0087] Biological bacteria: including Bacillus subtilis, nitrogen-fixing cyanobacteria, halo-tolerant rhizobia, halo-tolerant Azospirillum brasiliensis, halo-tolerant Klebsiella nitrogen-fixing, saline-alkali-tolerant Phosphorus solubilis, Saccharomyces cerevisiae, Trichoderma reesei, nitrifying bacteria, Alkaline bacteria, cellulolytic bacteria; the number of viable bacteria in the biological bacteria is 1×10 6 More than cfu / g;

[0088] Material A: crush the straw, then add animal manure and biological bacter...

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Abstract

The present invention provides a method for modifying saline-alkali soil by using phosphogypsum+1'3-dimethylol urea+EDTA+biological bacteria. The method is material treatment which comprises phosphogypsum treatment, 1'3-dimethylol urea treatment, EDTA treatment and mixed treatment of straws and biological bacteria; According to the saline-alkali soil modification method provided by the present invention, saline-alkali soil can be modified quickly to make the saline-alkali soil be suitable for growth of crops; the modifier is relatively wide in application range, and is suitable for modification of saline-alkali soil in different areas caused by any reasons; and if the modifier is applied reasonably to soil, the soil fertility can be improved, the soil structure can be improved, the soil alkalinity can be neutralized, the salt removing rate can be improved, and the growth of crops can be further promoted, and the agricultural economic benefits can be 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+1'3-bishydroxymethylurea+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 distribut...

Claims

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Application Information

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IPC IPC(8): A01B79/02C09K17/40C09K101/00C09K109/00
Inventor 徐魁赵先明蒋俊蕊魏发展廖吉星项双龙
Owner GUIZHOU KAILIN GRP CO LTD
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