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Composition for improving heavy saline-alkali soil

A technology for heavily saline-alkali land and composition, applied in fertilizer mixtures, applications, organic fertilizers, etc., can solve the problems of aggravating the degree of salinization, difficulty in large-scale implementation, and high cost of improvement, and achieves the promotion of salt-fixing and alkali-reducing action, convenient and convenient. The effect of large-scale popularization and application and simple and easy preparation process

Inactive Publication Date: 2019-02-12
TARIM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The methods for improving saline-alkali land in the prior art include: 1. Water irrigation, which washes out the soluble saline-alkali in the soil or flows into the deep soil; Difficult to implement at scale
2. Apply organic fertilizer, but this method also has certain limitations. For severe saline-alkali land, a large amount of organic fertilizer is needed to effectively improve
3. Use NPK fertilizers and other inorganic salt fertilizers as improvers, but improper application of chemical fertilizers will also increase salinization, especially for severe saline-alkali land, which may increase the degree of salinization, and the cost of improvement is relatively high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The composition used in this example to improve severe saline-alkali land is composed of organic matter and salt-fixing and alkali-reducing agent, and the mass ratio of organic matter to salt-fixing and alkali-reducing agent is 5:1.

[0029] The preparation method of salt-fixing alkali-reducing agent comprises the steps:

[0030] (1) cut into sections: cotton stems are cut into 1 cm stem sections;

[0031] (2) Preparation of nitric acid-activated stem sections: a part of the stem sections were dipped in nitric acid, the concentration of nitric acid was 69wt%, and the soaking time was 24 hours. The stem sections soaked in nitric acid were naturally placed and air-dried to obtain nitric acid-activated stem sections;

[0032] (3) Preparation of phosphoric acid-activated stems: another part of the stems is dipped in phosphoric acid, the concentration of phosphoric acid is 85wt%, the soaking time is 24 hours, and the stems soaked in phosphoric acid are naturally placed and a...

Embodiment 2

[0040] The composition used in this example to improve severe saline-alkali land is composed of organic matter and salt-fixing and alkali-reducing agent, and the mass ratio of organic matter to salt-fixing and alkali-reducing agent is 5:1.

[0041] The preparation method of salt-fixing alkali-reducing agent comprises the steps:

[0042] (1) cut into sections: cotton stems are cut into 1 cm stem sections;

[0043] (2) Preparation of nitric acid-activated stem sections: a part of the stem sections were soaked in nitric acid, the concentration of nitric acid was 69wt%, and the soaking time was 24 hours. The stem sections soaked in nitric acid were naturally placed and air-dried to obtain nitric acid-activated stem sections;

[0044] (3) Preparation of phosphoric acid-activated stems: another part of the stems is dipped in phosphoric acid, the concentration of phosphoric acid is 85wt%, the soaking time is 24 hours, and the stems soaked in phosphoric acid are naturally placed and a...

Embodiment 3

[0053] The composition used in this example to improve severe saline-alkali land is composed of organic matter and salt-fixing and alkali-reducing agent, and the mass ratio of organic matter to salt-fixing and alkali-reducing agent is 5:1.

[0054] The preparation method of salt-fixing alkali-reducing agent comprises the steps:

[0055] (1) cut into sections: cotton stems are cut into 1 cm stem sections;

[0056] (2) Preparation of nitric acid-activated stem sections: a part of the stem sections were dipped in nitric acid, the concentration of nitric acid was 69wt%, and the soaking time was 24 hours. The stem sections soaked in nitric acid were naturally placed and air-dried to obtain nitric acid-activated stem sections;

[0057] (3) Preparation of phosphoric acid-activated stems: another part of the stems is dipped in phosphoric acid, the concentration of phosphoric acid is 85wt%, the soaking time is 24 hours, and the stems soaked in phosphoric acid are naturally placed and a...

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Abstract

The invention discloses a composition for improving heavy saline-alkali soil. The composition for improving the heavy saline-alkali soil consists of an organic substance and a salt-retaining alkali-reducing agent, wherein the organic substance is formed by fermenting branches and leaves of cotton plants, the salt-retaining alkali-reducing agent is prepared by activating and carbonizing cotton plant stem and then loading a photocatalyst, and the mass ratio of the organic substance to the salt-retaining alkali-reducing agent is (5 to 1)-(10 to 1). The composition has the advantages of hinging onlocal conditions, using indigenous local materials, turning waste into treasure, thereby solving a problem of environment pollution caused by burning of cotton plants; in addition, nitric acid, phosphoric acid and tetrabutyl titanate are relatively cheap, the preparation process is simple and practicable, and large-scale promotion and application are facilitated.

Description

technical field [0001] The present invention relates to saline-alkali land improvement. Specifically, it is a composition for improving severe saline-alkali land. Background technique [0002] There are a large number of saline-alkali lands in Xinjiang, and moderate and severe saline-alkali lands account for more than one-fifth of the total cultivated land in Xinjiang. Therefore, the improvement of saline-alkali land in Xinjiang is of great significance to increase the area of ​​cultivated land. [0003] The methods for improving saline-alkali land in the prior art include: 1. Water irrigation, which washes out the soluble saline-alkali in the soil or flows into the deep soil; Difficult to implement on a large scale. 2. Apply organic fertilizer, but this method also has certain limitations. For severe saline-alkali land, a large amount of organic fertilizer is needed to effectively improve it. 3. Use NPK fertilizers and other inorganic salt fertilizers as improvers, but ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/40C09K101/00C09K109/00
CPCC09K17/40C09K2101/00C09K2109/00
Inventor 张翠丽卜东升陈强曹琦张桂兵罗琳
Owner TARIM UNIV
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