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Saline-alkali soil modifier, preparation method thereof and application method thereof

An application method and a technology of improving agent, applied in the direction of chemical instruments and methods, applications, fertilization devices, etc., can solve the problems of easy soil compaction, and various indicators of saline-alkali land soil can not meet the requirements of normal soil, so as to improve soil compaction, effective Facilitate salt leaching and inhibit salt return

Active Publication Date: 2013-08-28
邵和斌 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, with the gradual increase of the country's coastal development, a large number of industrial parks, new cities and tourist resorts have been formed along the coast, but greening has always been a big problem that is difficult to solve. soil requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Saline-alkaline land improver, the improver includes A group reagent and B group reagent, wherein: A group reagent is a 20% by mass percent hydrolyzed polymaleic anhydride aqueous solution; B group reagent: anionic polymaleic anhydride mixed in a weight ratio of 1:1 Acrylamide and ethylenediaminetetraacetic acid powder; the weight ratio of group A reagent to group B reagent is 1:1 when applied.

[0017] The preparation method of saline-alkali land improving agent comprises the following steps:

[0018] (1) Under the condition of room temperature of 10°C, prepare a 20% by mass aqueous solution of hydrolyzed polymaleic anhydride to obtain a group A reagent of the modifier;

[0019] (2) Anionic polyacrylamide and ethylenediaminetetraacetic acid are mixed in a weight ratio of 1:1 to obtain the B group reagent of the improver, which is the auxiliary agent of the A group reagent.

[0020] In Example 1, the weight ratio of the group A reagents to the group B reagents can also...

Embodiment 2

[0022] Saline-alkali land improver, the improver includes A group reagent and B group reagent, wherein: A group reagent is a hydrolyzed polymaleic anhydride aqueous solution with a mass percentage of 40%; B group reagent: anionic polymaleic anhydride mixed in a weight ratio of 2:1 Acrylamide and ethylenediamine tetraacetic acid powder; the weight ratio of the group A reagent to the group B reagent is 1:1 when administered.

[0023] The preparation method of saline-alkali land improving agent comprises the following steps:

[0024] (1) Under the condition of room temperature of 20°C, prepare a 40% mass percent aqueous solution of hydrolyzed polymaleic anhydride to obtain a group A reagent of the improver;

[0025] (2) Anionic polyacrylamide and ethylenediaminetetraacetic acid are mixed at a weight ratio of 2:1 to obtain the B group reagent of the improver, which is the auxiliary agent of the A group reagent.

[0026] In Example 2, the weight ratio of the group A reagents to th...

Embodiment 3

[0028] Saline-alkaline land improver, the improver includes A group reagent and B group reagent, wherein: A group reagent is a hydrolyzed polymaleic anhydride aqueous solution with a mass percentage of 60%; B group reagent: anionic polymaleic anhydride mixed in a weight ratio of 3:1 Acrylamide and ethylenediaminetetraacetic acid powder; the weight ratio of the group A reagent to the group B reagent is 3:1 when administered.

[0029] The preparation method of saline-alkali land improving agent comprises the following steps:

[0030] (1) Under the condition of room temperature of 30°C, prepare a 60% mass percent aqueous solution of hydrolyzed polymaleic anhydride to obtain a group A reagent of the improver;

[0031] (2) Anionic polyacrylamide and ethylenediaminetetraacetic acid are mixed in a weight ratio of 3:1 to obtain the B group reagent of the improver, which is the auxiliary agent of the A group reagent.

[0032] In Example 3, the weight ratio of the group A reagents to t...

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PUM

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Abstract

The invention discloses a saline-alkali soil modifier. The modifier comprises a reagent A and a reagent B, wherein the reagent A is an aqueous hydrolyzed polymaleic anhydride solution with the mass percentage of 20-60%; the reagent B is a pulvis which comprises an anionic polyacrylamide and ethylene diamine tetraacetic acid according to a weight ratio of 1-3:1; and the application weight ratio ofthe reagent A to the reagent B is 1-3:1. The preparation method of the saline-alkali soil modifier comprises the following steps: 1, preparing the aqueous hydrolyzed polymaleic anhydride solution with the mass percentage of 20-60% at 10-30DEG C to obtain the reagent A of the modifier; and 2, mixing the anionic polyacrylamide with ethylene diamine tetraacetic acid according to a weight ratio of 2:1 to obtain the reagent B of the modifier. The modifier of the invention, which can effectively improve the soil hardening, promote the formation of the granular structure of soil and increase the soil porosity, is in favor of the saline leaching, and inhibits the salinization.

Description

technical field [0001] This invention relates to saline soil improvers. [0002] The invention also relates to a preparation method of the saline-alkaline soil improving agent and an application method of the saline-alkali soil improving agent. Background technique [0003] At present, my country has a coastline of about 3,000 kilometers, and it is estimated that there are 210 million mu of shallow sea and tidal flats within the 15-meter isobath. Jiangsu, Shandong, Hebei, and Liaoning provinces to the north of the Yangtze River Estuary have an area of ​​15 million mu of coastal saline soil, and the tidal flat area is hard to estimate. According to relevant data from Jiangsu Province, there are 9.8 million mu of tidal flat in this province, and the estuary is still flowing towards the Yangtze River. Shallow sea propulsion, in just a decade, the Yellow River estuary has an average annual propulsion speed of 2.77km, and an average annual land-making area of ​​46.33 square kilo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K17/20A01B77/00
Inventor 张永康
Owner 邵和斌