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Saline-alkali soil conditioner and preparation method thereof

A soil conditioner, a technology for saline-alkali land, applied in soil conditioning materials, chemical instruments and methods, other chemical processes, etc., can solve problems such as difficulty in making full use of soil resources, improve soil erosion, be conducive to environmental protection, raw materials cost-effective effect

Active Publication Date: 2016-01-20
JIANGSU DONGZHU LANDSCAPE CONSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Salinization of agricultural cultivated land causes yield reduction and abandonment of cultivated land, making it difficult to fully utilize large areas of soil resources.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A soil improver for saline-alkali land, comprising the following components in weight percent: 31% of sodium polyacrylate, 22% of ion exchange resin, 39% of biogas residue, and 8% of microbial agent. The molecular weight of sodium polyacrylate is 5,000,000 g / mol, the ion exchange resin is a hydrogen type cation exchange resin, and the nitrogen-fixing bacteria agent is a microbial agent.

[0028] The preparation method of saline-alkali land soil conditioner in embodiment 1 comprises the steps:

[0029] (1) Dry and dehydrate biogas residue in a dryer, grind it and pass it through a 100-mesh sieve;

[0030] (2) Add nitrogen-fixing bacteria agent to the material in step (1), and mix evenly to obtain a mixed material;

[0031] (3) spraying and granulating the mixed material obtained in step (2);

[0032] (4) The material granules are first coated with a hydrogen-type cation exchange resin, and then coated with sodium polyacrylate for a second time to finally obtain the sal...

Embodiment 2

[0035] A soil improver for saline-alkali land, comprising the following components in weight percent: 20% sodium polyacrylate, 35% ion exchange resin, 50% biogas residue, and 5% microbial agent. The molecular weight of sodium polyacrylate is 10000000g / mol, the ion exchange resin is a hydrogen type cation exchange resin, and the mycorrhizal agent and nitrogen-fixing bacteria agent are mixed microbial agents.

[0036] The preparation method of saline-alkali land soil conditioner comprises the steps in embodiment 2:

[0037] (1) Dry and dehydrate biogas residue in a dryer, grind it and pass it through a 100-mesh sieve;

[0038] (2) Add mycorrhizal agent and nitrogen-fixing bacteria agent to the material in step (1), and mix evenly to obtain a mixed material;

[0039] (3) spraying and granulating the mixed material obtained in step (2);

[0040] (4) The material granules are first coated with a hydrogen-type cation exchange resin, and then coated with sodium polyacrylate for a s...

Embodiment 3

[0043] A soil improver for saline-alkali land, comprising the following components in weight percent: 20-40% of sodium polyacrylate, 20-35% of ion exchange resin, 35-50% of biogas residue, and 5-10% of microbial agent.

[0044] A soil improver for saline-alkali land, comprising the following components in weight percent: 38% of sodium polyacrylate, 20% of ion exchange resin, 35% of biogas residue, and 7% of microbial agent. The molecular weight of sodium polyacrylate is 1000000g / mol, the ion exchange resin is a hydrogen type cation exchange resin, and the photosynthetic bacteria agent is a microbial agent.

[0045] The preparation method of saline-alkali land soil conditioner comprises the steps in embodiment 3:

[0046] (1) Dry and dehydrate biogas residue in a dryer, grind it and pass it through a 100-mesh sieve;

[0047] (2) Add photosynthetic bacteria agent to the material in step (1), and mix evenly to obtain a mixed material;

[0048] (3) spraying and granulating the m...

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PUM

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Abstract

The invention provides a saline-alkali soil conditioner which is characterized by comprising sodium polyacrylate, ion exchange resin, biogas residues and a microbial agent. The biogas residues are used in the saline-alkali soil conditioner, so that waste resources are sufficiently utilized, waste materials are changed into things of value, and furthermore the raw materials are low in cost and available; and due to the addition of ion exchange resin, relatively-high-content sodium ions in saline-alkali soil can be adsorbed, and the structure and pH value of the soil can be regulated, so that the saline-alkali soil conditioner is beneficial to plant growth.

Description

technical field [0001] The invention relates to the technical field of soil improvement, in particular to a soil conditioner for saline-alkali land and a preparation method thereof. Background technique [0002] Soil salinization refers to the process in which the salt in the bottom soil or groundwater rises to the surface with the capillary water, and after the water evaporates, the salt accumulates in the surface soil. Soil salinization is a worldwide problem. More than 100 cities in my country are located in saline-alkali distribution areas, mainly in the arid and semi-arid areas of North China, Northwest and Northeast China. Salinization of agricultural cultivated land causes yield reduction and abandonment of cultivated land, making it difficult to fully utilize large areas of soil resources. However, my country has a large population base and rapid population growth. With the development of urbanization, it is facing the huge pressure of a sharp decrease in cultivated...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/00C09K109/00
Inventor 铁超朱正中
Owner JIANGSU DONGZHU LANDSCAPE CONSTR
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