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Parent material remediation method for acid soil

A remediation method and acid soil technology, applied in the restoration of contaminated soil, soil conditioning materials, chemical instruments and methods, etc., can solve the problems of poor buffering and sustainability, soil physical and chemical and biological properties and side effects, and achieve good buffering and sustainability, avoid burning seedlings, and reduce the effect of harm

Active Publication Date: 2021-03-12
云南和瑾科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a parent material restoration method for acidic soils, which solves the problems of poor buffering and sustainability and adverse effects on soil physicochemical and biological conditions when improving acidic soils by simply and blindly adding alkaline acid neutralizing materials such as quicklime. Problems with side effects from traits

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Sampling and testing the soil to be repaired, judging the soil type by color and texture, focusing on the analysis of pH value, exchangeable calcium, and exchangeable magnesium indicators. The soil pH value uses the potentiometric method, and the exchangeable calcium and magnesium use ammonium acetate extraction-atomic absorption method.

[0033] After analysis, the soil is red soil, with a pH value of 4.2 and less than 5; exchangeable calcium is 1.25cmol / kg, and exchangeable magnesium is 1.12cmol / kg; the ratio of exchangeable calcium and magnesium content is 1.12, which is slightly less than 1.5.

[0034] Dolomite and limestone are selected to form ore-source soil-forming parent material at a mass ratio of 1:1.5, mixed and crushed, and passed through a 100-mesh sieve to obtain ore-source soil-forming parent material powder.

[0035] Choose lignite as the raw material of mineral source humic acid, and dolomite kiln dust as the material for neutralizing alkaline acid. A ...

Embodiment 2

[0042] Sampling and testing the soil to be repaired, judging the soil type by color and texture, focusing on the analysis of pH value, exchangeable calcium, and exchangeable magnesium indicators. The soil pH value uses the potentiometric method, and the exchangeable calcium and magnesium use ammonium acetate extraction-atomic absorption method.

[0043] After analysis, the soil is yellow soil with a pH value of 5.8 greater than 5; exchangeable calcium is 3.22 cmol / kg, exchangeable magnesium is 1.04 cmol / kg; the ratio of exchangeable calcium and magnesium content is 3.09, between 1.5 and 3.5.

[0044] Dolomite and limestone are selected to form ore-source soil-forming parent material at a mass ratio of 1:0.5, which are mixed and crushed and passed through a 60-mesh sieve to obtain ore-source soil-forming parent material powder.

[0045] The peat that has been mechanically crushed is selected as the raw material of mineral source humic acid, and the fly ash is used as the neutral...

Embodiment 3

[0052] Sampling and testing the soil to be repaired, judging the soil type by color and texture, focusing on the analysis of pH value, exchangeable calcium, and exchangeable magnesium indicators. The soil pH value uses the potentiometric method, and the exchangeable calcium and magnesium use ammonium acetate extraction-atom absorption method.

[0053] After analysis, the soil is red soil, with a pH value of 4.8 and less than 5; exchangeable calcium is 2.14cmol / kg, and exchangeable magnesium is 0.26cmol / kg; the ratio of exchangeable calcium and magnesium content is 8.23, which is greater than 3.5.

[0054] Dolomite and limestone are selected to form ore-source soil-forming parent material at a mass ratio of 1:0.2, which are mixed and crushed and passed through an 80-mesh sieve to obtain ore-source soil-forming parent material powder.

[0055] Choose weathered coal as the raw material of mineral humic acid and dolomite kiln dust as the neutralizing material of alkaline acid. Wat...

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Abstract

The invention discloses a parent material remediation method for acid soil, and particularly relates to the technical field of soil improvement and remediation. The method comprises the following steps of: detecting the physical and chemical properties of to-be-remediated soil, analyzing the pH value and the content of exchangeable calcium and magnesium, selecting a mineral source soil-forming parent material, a mineral source humic acid raw material and an alkaline acid neutralization material, and respectively crushing and screening the raw materials; uniformly mixing the mineral source humic acid powder with powder of the alkaline acid neutralization material in proportion, and adding water to carry out curing reaction so as to prepare a pasty buffer type alkaline acid neutralization material; uniformly mixing the mineral source soil-forming parent material powder with the buffer type alkaline acid neutralization material in proportion to prepare a parent material compound type soilconditioner; then evenly applying the soil remediation agent to to-be-remediated cultivated land, and conducting turning, digging, plowing and harrowing to mix the agent with the to-be-remediated cultivated land evenly, thus reaching the effect of even soil application of a full-plowing layer; after remediation is completed and tillage is started, detecting the soil once every year, and preparingand applying the parent material compound type soil conditioner once according to conditions.

Description

technical field [0001] The invention relates to the technical field of soil improvement and restoration, in particular to a parent material restoration method for acidic soil. Background technique [0002] The main reason for the low quality of cultivated land is soil degradation. The causes of soil degradation, in addition to natural factors such as soil erosion and climate deterioration, are mainly a series of problems such as soil nutrient deficiency, compaction, acidification, pollution and shallowing of the cultivated layer caused by unreasonable agricultural cultivation. Among them, soil acidification is a common problem in the soil degradation of cultivated land in southern my country. [0003] The acidification of cultivated land soil is essentially an irreversible malignant development process of soil parent material abnormality. Under the influence of factors such as rainwater leaching, continuous cultivation for many years, and excessive application of chemical f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/08B09C1/10C09K17/40C09K101/00
CPCB09C1/08B09C1/10C09K17/40C09K2101/00B09C2101/00
Inventor 卢红吕云夏谦周路宋建乔李正芳
Owner 云南和瑾科技有限公司
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