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

CN105144898AInactive Publication Date: 2015-12-16GUIZHOU KAILIN GRP CO LTD +1
9 Cites 2 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2015-12-16
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

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.
Need to check novelty before this filing date? Find Prior Art

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...

Examples

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...