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Soil conditioner for reducing activity of heavy metals in soil, preparation method thereof, and method for reducing content of heavy metals in rice

A soil conditioner and heavy metal technology, applied in soil conditioning materials, botanical equipment and methods, chemical instruments and methods, etc., can solve the problems of single heavy metal treatment, complicated implementation steps, and soil fertility decline, etc. The effect of weakening absorption capacity and promoting absorption

Pending Publication Date: 2017-04-19
东莞中科土壤科技开发有限公司
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  • Summary
  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

Although this type of technical method has a certain effect in reducing the activity of heavy metals in the soil and blocking the absorption of heavy metals in the soil by rice, it has the disadvantages of high cost, complicated implementation steps, low efficiency, easy reduction of soil fertility, and single treatment of heavy metals.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The soil conditioner for reducing the activity of heavy metals in soil according to the embodiment of the present invention is composed of the following raw materials by mass:

[0035] 2 parts expanded vermiculite powder, 2 parts steel slag powder, 1 part lime and 5 parts organic fertilizer.

[0036] The preparation method of the soil conditioner for reducing the activity of heavy metals in soil according to the embodiment of the present invention is:

[0037] The soil conditioner is obtained by mixing 2 parts of expanded vermiculite powder, 2 parts of steel slag powder, 1 part of lime and 5 parts of organic fertilizer.

[0038] The method for reducing heavy metal content in rice according to the embodiment of the present invention comprises the following steps:

[0039] Spread 11.24 kg of the soil conditioner of this example on 25 m with an amount of 300 kg / mu. 2 The soil surface of the paddy field contaminated by heavy metals, then use agricultural machinery to turn...

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Abstract

The invention relates to the technical field of crop food safety control, and concretely relates to a soil conditioner for reducing the activity of heavy metals in soil, a preparation method thereof, and a method for reducing the content of heavy metals in rice. The soil conditioner for reducing the activity of heavy metals in soil comprises, by mass, 1-3 parts of expanded vermiculite powder, 1-3 parts of steel slag powder, 1-3 parts of lime and 3-5 parts of an organic fertilizer. The soil conditioner effectively and stably passivates the heavy metals in polluted farmland soil, improves the fertility of the soil, improves the soil tilth, promotes growth of rice, reduces the use amount of a chemical fertilizer, and facilitates yield and income increase. The method for reducing the content of heavy metals in rice, combining the soil conditioner with water and fertilizer controlled plantation of the rice, has the advantages of low cost, easiness in enforcement, greenness and environmental protection, and effective reduction of the content of the heavy metals in the rice.

Description

technical field [0001] The invention relates to the technical field of crop food safety control, in particular to a soil conditioner for reducing the activity of heavy metals in soil, a preparation method thereof, and a method for reducing the content of heavy metals in rice. Background technique [0002] Due to the arbitrary discharge of "three wastes", sewage irrigation, and unreasonable application of pesticides and fertilizers in the production process of industry and mining, farmland soil pollution will be caused. Therefore, the problem of farmland soil pollution has become increasingly serious. According to statistics, nearly one-fifth of the country's arable land is There are different levels of pollution problems, mainly heavy metal pollution. Heavy metals in the soil can be absorbed and enriched by crops, and finally enter the human body through the food chain, which seriously threatens people's health. my country is a big rice producing and consuming country. Abou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/40A01G16/00C09K101/00A01G22/22
CPCC09K17/40A01G22/22C09K2101/00
Inventor 肖定书李小飞郑煜基何辉
Owner 东莞中科土壤科技开发有限公司
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