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Method for improving saline and alkaline lands

A technology of saline-alkali land and improver, which is applied in the direction of soil preparation methods, chemical instruments and methods, organic fertilizers, etc., can solve the problems of reduced salt content on the surface of saline-alkali land, reduced salt content on the surface of saline-alkali land, and cannot be maintained for a long time, so as to improve water retention ability, improving soil, and improving the effect of interlayer spacing

Inactive Publication Date: 2018-10-26
长沙小新新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the treatment methods for saline-alkali land at home and abroad generally include salt discharge method and salt pressure method, etc., but they all have many shortcomings. The salinity reduction method is to use natural precipitation or artificial flood irrigation to promote part of the salinity to penetrate downward along the pores and cracks of the soil, and bring the salinity of the surface soil to the bottom layer with the water.
Although the above method can reduce the salt content of the saline-alkali surface layer, it cannot be maintained for a long time and requires a large amount of water

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A method for improving saline-alkali land, comprising the following steps:

[0022] S1. Dried the rice stalks and pulverized them, then boiled them in a sodium hydroxide solution with a mass concentration of 2% for 1.5 hours, then filtered, dried and pulverized again to obtain pretreated rice stalks;

[0023] S2. In parts by weight, add 50 parts of pretreated rice stalks to 500 parts of water, then add 4 parts of acrylic acid and 2 parts of aminotrimethylenephosphonic acid and mix evenly, then add 0.032 parts of N,N-methylenebispropylene For amides, the water temperature is heated to 55°C, and the reaction is carried out under stirring for 80 minutes. After the reaction is completed, it is dried and pulverized to obtain modified rice stalks;

[0024] S3. In parts by weight, add 200 parts of bentonite to 1000 parts of water, then add 15 parts of ethylenediaminetetraacetic acid, then stir and ultrasonicate at a speed of 200rpm for 35min, then add 50 parts of charcoal powd...

Embodiment 2

[0029] A method for improving saline-alkali land, comprising the following steps:

[0030] S1. Dried the rice stalks and pulverized them, then boiled them in a 1% sodium hydroxide solution for 1.2 hours, then filtered, dried and pulverized again to obtain pretreated rice stalks;

[0031] S2. In parts by weight, add 50 parts of pretreated rice stalks to 500 parts of water, then add 6 parts of acrylic acid, 1.8 parts of aminotrimethylene phosphonic acid and mix evenly, then add 0.03 parts of N,N-methylenebispropylene For amides, the water temperature was heated to 58°C, and the mixture was stirred for 70 minutes. After the reaction, it was dried and pulverized to obtain modified rice stalks;

[0032] S3. In parts by weight, add 200 parts of bentonite to 1000 parts of water, then add 12 parts of ethylenediaminetetraacetic acid, then stir and ultrasonicate at a speed of 400rpm for 30min, then add 50 parts of charcoal powder and 6 parts of humic acid 140 parts of modified rice sta...

Embodiment 3

[0037] A method for improving saline-alkali land, comprising the following steps:

[0038] S1. Dried the rice stalks and pulverized them, then boiled them in a sodium hydroxide solution with a mass concentration of 4% for 1 hour, then filtered, dried and pulverized again to obtain pretreated rice stalks;

[0039] S2. In parts by weight, add 50 parts of pretreated rice stalks to 500 parts of water, then add 5 parts of acrylic acid, 2.3 parts of aminotrimethylene phosphonic acid and mix evenly, then add 0.024 parts of N,N-methylenebispropylene For amides, the water temperature was heated to 56°C, and the mixture was stirred for 90 minutes, and after the reaction was completed, it was dried and pulverized to obtain modified rice stalks;

[0040] S3. In terms of parts by weight, add 200 parts of bentonite to 1000 parts of water, then add 10 parts of ethylenediaminetetraacetic acid, then stir and sonicate at a speed of 300rpm for 40min, then add 50 parts of charcoal powder and 4 pa...

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Abstract

The invention discloses a method for improving saline and alkaline lands. The method includes the steps: pretreating rice straws by a thin alkali method; grafting acrylic acid and amino trimethylene phosphonic acid to obtain modified rice straws; mixing ethylenediamine tetraacetic acid intercalated bentonite, the modified rice straws, wood charcoal powder and humus acid to obtain saline-alkali land improvers; improving the saline and alkaline lands by the saline-alkali land improvers, and planting plants on the improved saline and alkaline lands. According to the method, the saline and alkaline lands can be effectively improved for a long time, and the survival rate of the plants planted on the saline and alkaline lands is increased.

Description

technical field [0001] The invention relates to a method for improving saline-alkali land. Background technique [0002] At present, the treatment methods for saline-alkali land at home and abroad generally include salt discharge method and salt pressure method, etc., but they all have many shortcomings. The salinity reduction method is to use natural precipitation or artificial flood irrigation to promote part of the salinity to penetrate downward along the pores and cracks of the soil, and bring the salinity of the surface soil to the bottom layer with the water. Although the above method can reduce the salt content of the saline-alkali surface layer, it cannot be maintained for a long time and requires a large amount of water. [0003] Therefore, there is an urgent need to develop a method and a planting method for saline-alkali land that consume less water and can effectively improve saline-alkali land for a long time. Contents of the invention [0004] The invention...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01B79/00C09K17/40C09K101/00
CPCA01B79/00C09K17/40C09K2101/00
Inventor 不公告发明人
Owner 长沙小新新能源科技有限公司
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