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Method for improving saline-alkali soil through ardealite, DMTU and EDTA

A technology of dimethylene triurea and saline-alkali land, applied in the field of saline-alkali land treatment, can solve the problems of poor treatment effect, complicated production process, and inability to be popularized in a large area, and achieve the effect of suitable crop growth and improvement of saline-alkali land

Inactive Publication Date: 2015-12-09
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 through ardealite, DMTU and EDTA
  • Method for improving saline-alkali soil through ardealite, DMTU and EDTA
  • Method for improving saline-alkali soil through ardealite, DMTU and EDTA

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] 1. Raw material preparation

[0032] Phosphogypsum;

[0033] Fulvic acid;

[0034] Dimethylene triurea, its structural formula is

[0035]

[0036] oxalic acid;

[0037] Hydroxymethylcellulose;

[0038] EDTA;

[0039] 2. The method of improving saline-alkali land with phosphogypsum + dimethylene triurea + EDTA

[0040] Include the following steps:

[0041] (1) Sprinkle phosphogypsum and fulvic 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 mix dimethylene triurea, oxalic acid, and hydroxymethyl cellulose in a ratio of 20:0.5:0.5, and then spread them evenly on the surface of the saline-alkali land, and plow 20cm deep, so that dimethylene triurea, oxalic acid , Mix the mixture of hydroxymethyl cellulose and the soil layer evenly, spray clean water to make the 20cm deep saline-alkali soil wet, and keep it for 2 days;

[0043] (3) Sprin...

Embodiment 2

[0049] 1. Raw material preparation

[0050] Phosphogypsum;

[0051] Fulvic acid;

[0052] Dimethylene triurea, its structural formula is

[0053]

[0054] oxalic acid;

[0055] Hydroxymethylcellulose;

[0056] EDTA;

[0057] 2. The method of improving saline-alkali land with phosphogypsum + dimethylene triurea + EDTA

[0058] Include the following steps:

[0059] (1) Sprinkle phosphogypsum and fulvic 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 30 days;

[0060] (2) Then mix dimethylene triurea, oxalic acid, and hydroxymethyl cellulose in a ratio of 20:2:2, and then spread them evenly on the surface of the saline-alkali soil, and plow 20cm deep, so that dimethylene triurea, oxalic acid , Mix the mixture of hydroxymethyl cellulose and the soil layer evenly, spray clean water to make the 20cm deep saline-alkali soil wet, and keep it for 20 days;

[0061] (3) Sprinkle ...

Embodiment 3

[0067] 1. Raw material preparation

[0068] Phosphogypsum;

[0069] Fulvic acid;

[0070] Dimethylene triurea, its structural formula is

[0071]

[0072] oxalic acid;

[0073] Hydroxymethylcellulose;

[0074] EDTA;

[0075] 2. The method of improving saline-alkali land with phosphogypsum + dimethylene triurea + EDTA

[0076] Include the following steps:

[0077] (1) Sprinkle phosphogypsum and fulvic 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;

[0078] (2) Then mix dimethylene triurea, oxalic acid, and hydroxymethyl cellulose in a ratio of 20:1:1, and then evenly sprinkle it on the surface of the saline-alkali soil, and plow 20cm deep, so that dimethylene triurea, oxalic acid 1. Mix the mixture of hydroxymethyl cellulose and the soil layer evenly, spray water to make the 20cm deep saline-alkali soil wet, and keep it for 13 days;

[0079] (3) Sprinkle EDT...

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Abstract

The invention provides a method for improving saline-alkali soil through ardealite, DMTU and EDTA. The method includes the steps that first, the ardealite and fulvic acid are used for treatment; then the DMTU, oxalic acid and hydroxymethyl cellulose are used for treatment; finally, the EDTA is used for treatment. By the adoption of the method for improving the saline-alkali soil, the saline-alkali soil can be improved quickly and is suitable for growth of crops; moreover, the application range of the modifying agent is wide, the modifying agent is suitable for improvement of soil alkalization in different areas and for different reasons, the modifying agent can be applied to the soil reasonably, and the soil structure can be improved; the soil alkalinity is lowered, the salt elimination rate of the soil is increased, the soil fertility is improved, the growth of the crops is promoted, and agricultural economy is 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+dimethylene triurea+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 are...

Claims

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Application Information

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IPC IPC(8): A01B79/02C05G1/00
Inventor 陈彬廖吉星蒋俊蕊宋斌蔺忠建韩朝应
Owner GUIZHOU KAILIN GRP CO LTD
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