Acidic soil improving agent and application method thereof

A technology of acidic soil and improver, applied in soil conditioning materials, chemical instruments and methods, applications, etc., can solve the problems of reduced fertilizer efficiency, easy calcification of effective nutrients, and accelerated soil nitrogen mineralization rate, so as to promote plant growth and development, Good economic benefits and the effect of improving the soil environment

Inactive Publication Date: 2015-01-07
凌少青
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, a large amount of lime application accelerates the mineralization rate of soil nitrogen, and can increase the nitrification of soil, so that NO in soil 3 - -N accumulation increases, and there are also the following defects: first, it will cause soil compaction and soil quality deterioration; second, effective nutrients are easy to calcify, resulting in reduced fertilizer efficiency; third, it will destroy the aggregate structure of the soil
As for the application of other alkaline substances, such as fly ash, slag, steel slag and other industrial solid wastes to improve the soil, because these substances contain heavy metals, long-term application will have adverse effects on the soil and the ecological environment

Method used

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  • Acidic soil improving agent and application method thereof
  • Acidic soil improving agent and application method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023]Paddy field acidification soil improvement: Take a sampling test of 1 mu of paddy field within the scope, select the average value, pH value = 3.5, see Table 1 for the active ingredients and metal ion concentrations in the soil, apply the following ratio of acidic soil improver, dry calcium carbide slag The mass content on a dry basis of the plant ash is 80wt%, the mass content on a dry basis of the plant ash is 15wt%, the mass content of the polyacrylamide is 1wt%, the mass content of the chitosan is 0.5wt%, and the rest are water, The application rate is 400kg. After 10 days, when the soil was completely absorbed, the soil was tested, and the test data are shown in Table 1.

Embodiment 2

[0025] Paddy field acidification soil improvement: Take a sample test of 1 mu of paddy field within the scope, select the average value, pH value = 4.5, see Table 1 for the active ingredients and metal ion concentrations in the soil, apply the following ratio of acidic soil improver, dry calcium carbide slag The mass content on a dry basis of the plant ash is 85wt%, the mass content on a dry basis of the plant ash is 9wt%, the mass content of the polyacrylamide is 2wt%, the mass content of the chitosan is 0.3wt%, and the rest is water, The application rate is 250kg. After 10 days, when the soil was completely absorbed, the soil was tested, and the test data are shown in Table 1.

Embodiment 3

[0027] Paddy field acidification soil improvement: Take a sample test of 1 mu of paddy field within the scope, select the average value, pH value = 5.5, see Table 1 for the active ingredients and metal ion concentrations in the soil, apply the following ratio of acidic soil improver, dry calcium carbide slag The mass content on a dry basis of the plant ash is 88wt%, the mass content on a dry basis of the plant ash is 5wt%, the mass content of the polyacrylamide is 3wt%, the mass content of the chitosan is 0.1wt%, and the rest are water, The application rate is 100kg. After 10 days, when the soil was completely absorbed, the soil was tested, and the test data are shown in Table 1.

[0028]

[0029]

[0030] As can be seen from Table 1, after different acidic paddy fields are applied with the acidic soil improver of the present invention, they can all be improved well, and the acidic soil pH value reaches the requirement of 6 to 7, which shows that soil exchangeability can b...

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Abstract

The invention relates to an acidic soil improving agent and an application method thereof. The acidic soil improving agent is prepared by fully and uniformly mixing the following raw materials in percentage by weight: 80-90% of dry carbide slag, 5-15% of plant ash, 1-5% of polyacrylamide and 0.1-0.5% of chitosan, wherein the pH value of a mixture is 12-12.6. The main raw material of the acidic soil improving agent provided by the invention selects the dry carbide slag, thereby realizing comprehensive utilization of industrial solid wastes, having good benefits, turning the wastes into treasures and being in line with national environment-friendly and cyclic economy policies. When the acidic soil improving agent is applied during soil tillage, a soil top application way is adopted in a paddy field and a soil blending application way is adopted in a dry land. The pH value of soil to which the acidic soil improving agent provided by the invention is applied achieves 6-7, the absorption of soil available nutrients by crops is reinforced, the activity of heavy metal ions in the soil can be also inhibited, a soil environment is improved and growth and development of plants are promoted.

Description

technical field [0001] The invention relates to the technical field of soil improvement and environmental protection, in particular to an acidic soil improver and an application method. Background technique [0002] Soil is the matrix on which living organisms depend, and it is also the foundation on which human beings depend. As a non-renewable resource, soil plays an irreplaceable role. However, with the rapid development of modern industry, a large amount of acidic gas and water pollutants enter the soil through the atmosphere and water bodies, especially in recent years, acid rain and heavy metal pollution are serious, and farmers overuse acidic fertilizers (such as ammonium chloride, ammonium sulfate , urea, etc.), resulting in soil acidification and the intensification of heavy metal ion enrichment in soil. After soil acidification, the number of beneficial microorganisms in the soil will be reduced, and the growth and activity of beneficial microorganisms will be inh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/50C09K101/00C09K109/00
CPCC09K17/50C09K2101/00C09K2109/00
Inventor 凌少青寥军凌恺
Owner 凌少青
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