Saline-alkali soil improver as well as preparation method and use method thereof

A technology for improving agent and saline-alkali land, applied in chemical instruments and methods, applications, organic fertilizers, etc., can solve the problems of phytoremediation taking a long time, paying less attention to water retention performance, consuming a lot of manpower and material resources, and reducing nutrient loss and low cost. , to maintain the effect of fertilizer nutrients

Inactive Publication Date: 2014-07-23
高程华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these measures are effective under certain conditions, each has its own limitations: the water conservancy method and the chemical improvement method consume a lot of manpower and material resources, and the phytoremediation method takes a long time and is limited by climatic conditions. development needs
Among them, the ch...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) Irradiate the dry powder of attapulgite (colloidal grade, 200 mesh) under gamma rays (1MeV, 10kGy) for 5 minutes to disperse the attapulgite to enhance its nutrient retention;

[0024] (2) By weight, 6 parts of weathered coal (20% humic acid content) and 1 part of sodium acrylate are evenly mixed, and then added to water to make a suspension with a concentration of 50g / L. Under stirring for 20 minutes, the sodium acrylate was graft-copolymerized on the weathered coal surface. Then dry at 50 degrees Celsius and pulverize to 200 mesh to obtain weathered coal-sodium polyacrylate composite;

[0025] (3) By weight, 1 part of the substance obtained in (2), 4 parts of the substance obtained in (1) and 2 parts of phosphogypsum (200 mesh) were uniformly mixed to obtain a saline-alkaline soil improver.

Embodiment 2

[0027] (1) Irradiate the dry powder of attapulgite (colloidal grade, 400 mesh) under gamma rays (5 MeV, 50kGy) for 20 minutes to disperse the attapulgite to enhance its nutrient retention;

[0028] (2) By weight, uniformly mix 12 parts of weathered coal (with a humic acid content of 45%) and 3 parts of sodium acrylate, and then add it to water to form a suspension with a concentration of 100g / L. Under stirring for 40 minutes, the sodium acrylate was graft-copolymerized on the weathered coal surface. Then dry at 70 degrees Celsius and pulverize to 400 mesh to obtain weathered coal-sodium polyacrylate composite;

[0029] (3) By weight, 3 parts of the substance obtained in (2), 8 parts of the substance obtained in (1) and 4 parts of phosphogypsum (400 mesh) were uniformly mixed to obtain a saline-alkaline soil improvement agent.

Embodiment 3

[0031] (1) Irradiate the dry powder of attapulgite (colloidal grade, 200 mesh) under gamma rays (1MeV, 10kGy) for 5 minutes to disperse the attapulgite to enhance its nutrient retention;

[0032] (2) By weight, 6 parts of weathered coal (20% humic acid content) and 1 part of sodium acrylate are evenly mixed, and then added to water to make a suspension with a concentration of 50g / L. Under stirring for 20 minutes, the sodium acrylate was graft-copolymerized on the weathered coal surface. Then dry at 50 degrees Celsius and pulverize to 200 mesh to obtain weathered coal-sodium polyacrylate composite;

[0033] (3) By weight, 1 part of the substance obtained in (2), 4 parts of the substance obtained in (1) and 2 parts of phosphogypsum (200 mesh) were uniformly mixed to obtain a saline-alkaline soil improver.

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PUM

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Abstract

The invention discloses a saline-alkali soil improver as well as a preparation method and a use method thereof. The saline-alkali soil improver is prepared by irradiating, modifying and grafting materials such as attapulgite, decomposed coal and sodium polyacrylate. According to the saline-alkali soil improver, carbonate ions in deep soil are cured through ardealite, the pH value of the soil is reduced and the soil can be loosened under the acidic action of the decomposed coal, and the effect of protecting the soil nutrient is achieved by virtue of the attapulgite.

Description

technical field [0001] The invention relates to a saline-alkali land improving agent, a preparation method and a use method thereof. Background technique [0002] Soil salinization has always been the main obstacle restricting the development of agriculture and the improvement of comprehensive ability in our country. According to the data, there are nearly 400 million mu of saline-alkali soil in our country. If we do not increase the control and prevention efforts, it will directly affect our country's agricultural production capacity and food security. The deterioration of the ecological environment brought about by salinization will even affect the living and development space of the people in the irrigation area. Therefore, the prevention and development of saline-alkali land is an issue that cannot be ignored in the agricultural development of irrigation areas, and plays an important role in promoting sustainable agricultural development and ensuring food security. [...

Claims

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Application Information

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IPC IPC(8): C09K17/40
Inventor 高程华
Owner 高程华
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