Saline and alkaline land improvement method adopting compound waste

A saline-alkali land and waste technology, which is applied in the field of compound waste to improve saline-alkali land, can solve the problems of waste residue occupying land resources, hidden safety hazards, environmental pollution, etc., and achieve the effects of improving soil fertility, eliminating compaction, and reducing saline-alkali damage

Active Publication Date: 2019-12-10
正大农业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, with the development of the iron and steel industry, a large amount of waste slag is produced. The accumulation of a large amount of waste slag not only occupies land resources, but also causes environmental pollution and safety hazards.

Method used

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  • Saline and alkaline land improvement method adopting compound waste
  • Saline and alkaline land improvement method adopting compound waste
  • Saline and alkaline land improvement method adopting compound waste

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1-3

[0043] In Preparation Example 1-3, the polyvinyl alcohol is selected from the polyvinyl alcohol sold by Zhengzhou Jinzhifu Trading Co., Ltd. with the brand name of 24-88, and the boron trioxide is selected from the product number KPL8-28934 sold by Shandong Kepler Biotechnology Co., Ltd. The diboron trioxide and steel slag are selected from the steel slag with item number 016 sold by Lingshou County Heshun Mineral Products Processing Plant.

preparation example 1

[0044] Preparation Example 1: Add 1kg of polyvinyl alcohol particles into 3kg of water, stir evenly, and heat up to 50°C; add 0.6kg of boron trioxide to 1.5kg of steel slag, mix well, add to the polyvinyl alcohol solution, and stir well , cured at room temperature, crushed to an average particle size of 20mm.

preparation example 2

[0045] Preparation Example 2: Add 2kg of polyvinyl alcohol particles into 4.5kg of water, stir evenly, and heat up to 60°C; add 0.9kg of boron trioxide to 2.5kg of steel slag, mix well, add to the polyvinyl alcohol solution, and stir Uniform, cured at room temperature, crushed to an average particle size of 30mm.

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Abstract

The invention discloses a saline and alkaline land improvement method adopting compound waste, and relates to the technical field of saline and alkaline land improvement. The method comprises the following steps that S1, a desulfurized gypsum improvement agent is uniformly thrown to the surface of to-be-improved coastal saline and alkaline land, wherein the application amount of the desulfurized gypsum improvement agent is 1,800-2,000 kg/mu; S2, the coastal saline and alkaline land is subjected to rotary tillage by 15-20 centimeters; S3, after rotary tillage, the coastal saline and alkaline land is deeply ploughed by 30-40 centimeters; S4, the desulfurized gypsum improvement agent is uniformly thrown to the surface of the saline and alkaline land again, wherein the application amount of the desulfurized gypsum improvement agent is 1,800-2,000 kg/mu; S5, the saline and alkaline land is subjected to rotary tillage by 15-20 centimeters again; S6, after 1-2 months, land irrigation, salt leaching and alkali discharging are conducted. The saline and alkaline land improvement method adopting the compound waste has the advantages that industrial waste such as desulfurized gypsum and iron and steel slag is utilized, the improvement cost is reduced, and the salinity in soil and the pH value of the soil are reduced.

Description

technical field [0001] The invention relates to the technical field of saline-alkali land improvement, more specifically, it relates to a method for improving saline-alkali land with composite waste. Background technique [0002] Soil salinization is a worldwide problem faced by human beings. Soil salinization can cause two kinds of harm to plants: one is the toxic effect, when plants absorb more sodium ions or chloride ions, the structure of the cell membrane will be changed The second is to increase the osmotic pressure of the soil, which creates resistance to the absorption of plant roots, making it difficult for plants to absorb water, cell dehydration, plant wilting, and finally plant death. [0003] At present, the distribution of saline-alkali land in my country is as follows: 1. Northwest inland saline-alkali area: including most of Xinjiang, Qaidam Basin in Qinghai, Hexi Corridor in Gansu and western Inner Mongolia; 2. Semi-arid saline-alkali area in the middle and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01B79/02A01B79/00C09K17/40
CPCA01B79/02A01B79/00C09K17/40
Inventor 庄定云潘锋刘召召
Owner 正大农业有限公司
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