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Method for improving saline-alkali soil by using phosphogypsum, trimethylene tetraurea and EDTA

A technology of trimethylene tetraurea and methyl tetraurea, which is applied in the field of saline-alkali soil treatment, can solve the problems of poor treatment effect, inability to be popularized in a large area, complicated production process and the like, and achieve the effect of reducing salt content

Inactive Publication Date: 2015-12-02
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 improving saline-alkali soil by using phosphogypsum, trimethylene tetraurea and EDTA
  • Method for improving saline-alkali soil by using phosphogypsum, trimethylene tetraurea and EDTA
  • Method for improving saline-alkali soil by using phosphogypsum, trimethylene tetraurea and EDTA

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] 1. Raw material preparation

[0032] Phosphogypsum,

[0033] brown humic acid,

[0034] Trimethylene tetraurea, the structural formula is:

[0035]

[0036] Phthalate,

[0037] polyethylene glycol,

[0038] EDTA.

[0039] 2. A method for improving saline-alkali land with phosphogypsum+trimethylenetetraurea+EDTA

[0040] Include the following steps:

[0041] (1) Sprinkle phosphogypsum and brown humic acid evenly on the surface of the saline-alkali land, and plow 20cm deep, so that the phosphogypsum and the soil layer are evenly mixed and kept for 5 days;

[0042] (2) Then trimethylene tetraurea, phthalic acid, and polyethylene glycol are mixed in a ratio of 20:0.5:0.5, and then evenly sprinkled on the surface of the saline-alkali land, and deeply plowed 20cm, so that the slow-release binder and the soil The layers are mixed evenly and kept for 5 days;

[0043] (3) Sprinkle EDTA evenly on the surface of the saline-alkali land, and plow 20cm deep, mix the materi...

Embodiment 2

[0049] 1. Raw material preparation

[0050] Phosphogypsum,

[0051] brown humic acid,

[0052] Trimethylene tetraurea, the structural formula is:

[0053]

[0054] Phthalate,

[0055] polyethylene glycol,

[0056] EDTA.

[0057] 2. A method for improving saline-alkali land with phosphogypsum+trimethylenetetraurea+EDTA

[0058] Include the following steps:

[0059] (1) Sprinkle phosphogypsum and brown humic acid evenly on the surface of the saline-alkali land, and plow 20cm deep, so that the phosphogypsum and the soil layer are evenly mixed and kept for 20 days;

[0060] (2) Then trimethylene tetraurea, phthalic acid, and polyethylene glycol are mixed in a ratio of 20:2:2, and then evenly sprinkled on the surface of the saline-alkali land, and deeply plowed 20cm, so that the slow-release binder and soil The layers are mixed evenly and kept for 30 days;

[0061] (3) Sprinkle EDTA evenly on the surface of the saline-alkali land, and plow 20cm deep, mix the material and t...

Embodiment 3

[0067] 1. Raw material preparation

[0068] Phosphogypsum,

[0069] brown humic acid,

[0070] Trimethylene tetraurea, the structural formula is:

[0071]

[0072] Phthalate,

[0073] polyethylene glycol,

[0074] EDTA.

[0075] 2. A method for improving saline-alkali land with phosphogypsum+trimethylenetetraurea+EDTA

[0076] Include the following steps:

[0077] (1) Sprinkle phosphogypsum and brown humic acid evenly on the surface of the saline-alkali land, and plow 20cm deep, so that the phosphogypsum and the soil layer are evenly mixed and kept for 12 days;

[0078] (2) Then trimethylene tetraurea, phthalic acid, and polyethylene glycol are mixed in a ratio of 20:1:1, and then evenly sprinkled on the surface of the saline-alkali land, and deeply plowed 20cm, so that the slow-release binder and soil The layers are mixed evenly and kept for 15 days;

[0079] (3) Sprinkle EDTA evenly on the surface of the saline-alkali land, and plow 20cm deep, mix the material and...

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Abstract

The invention provides a method for improving saline-alkali soil by using phosphogypsum, trimethylene tetraurea and EDTA. The method comprises the following steps: firstly treating the saline-alkali soil by using phosphogypsum and humilic acid, then treating the saline-alkali soil by using trimethylene tetraurea, phthalic acid and polyethylene glycol, and finally treating the saline-alkali soil by using EDTA. Through the adoption of the method for improving the saline-alkali soil, the saline-alkali soil can be quickly improved to be suitable for growth of crops; the improver is relatively wide in application range and is suitable for improving the saline-alkali soil caused by different reasons in different regions; when the improver is reasonably applied to the soil, the soil structure can be improved, the alkalinity of the soil can be reduced, the salt rejection ratio of the soil can be increased, the fertility of the soil can be improved, the growth of the crops can be accelerated, and the agricultural economy 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+trimethylene tetraurea+EDTA. 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 earth. The ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/08C09K17/40C09K101/00C09K109/00
Inventor 陈彬魏发展廖吉星孙志梅石秀明徐圆
Owner GUIZHOU KAILIN GRP CO LTD
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