Method for bi-directionally assessing effective-state selenium in selenium-rich soil and selenium content level in paddy rice

A selenium-enriched soil and effective state technology, applied in soil material testing, measuring devices, material inspection products, etc., can solve problems such as the inability to quickly identify selenium content, reduce the risk of high selenium intake, make comprehensive utilization, and use scientific methods effective effect

Inactive Publication Date: 2019-10-25
INST OF GEOCHEM CHINESE ACADEMY OF SCI +1
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  • Abstract
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  • Application Information

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a method for bidirectionally evaluating the available selenium in selenium-enriched soil and the selenium content level in rice. Assess the pollution level of heavy metal selenium in soil and rice, so as to solve the problem that the existing technology cannot quickly identify the available selenium in soil and the selenium content in rice

Method used

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  • Method for bi-directionally assessing effective-state selenium in selenium-rich soil and selenium content level in paddy rice

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Embodiment Construction

[0017] Below in conjunction with embodiment the invention is further introduced:

[0018] 1. Materials

[0019] The rice and rhizosphere soil come from the rice field in Enshi City, Hubei Province. The total selenium content in the soil is 0.85-11.46mg / kg, all of which have reached the selenium-enriched level.

[0020] 2. Detection of available selenium content in selenium-enriched soil and selenium content in rice

[0021] 1. Collect rice plants and rhizosphere soil at the mature stage. It is required that the rice grows normally and the grains are full.

[0022] 2. Take the soil sample back to the laboratory, pick out the sundries, freeze-dry, grind to 200 mesh, and keep it sealed; after the plant sample is washed, it is separated into roots, stems, leaves, rice husks, bran and polished rice, and is also freeze-dried , Grind to powder.

[0023] 3. Weigh one gram of dry soil sample into a 50ml centrifuge tube, add 10mL 0.1mol / L potassium dihydrogen phosphate solution, and ...

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Abstract

The present invention discloses a method for bi-directionally assessing effective-state selenium in selenium-rich soil and a selenium content level in paddy rice. Calculation is performed by using a formula y=1.02x+104, wherein y represents a selenium content in paddy rice, and x represents an effective-state selenium content in rice rhizosphere soil. According to the method, a mutual relation between effective-state selenium and paddy rice selenium in soil is used, so that not only an effective-state selenium level in specific block soil can be rapidly diagnosed, but also a selenium content in paddy rice can be predicted by using the effective-state selenium level, thereby preventing high-selenium rice from being grown in high-effective-state selenium soil, and reducing a high-selenium intake risk.

Description

technical field [0001] The invention relates to a method for bidirectionally assessing the available selenium in selenium-rich soil and the selenium content level in rice, and belongs to the fields of effectiveness assessment of soil heavy metals and safe production of agricultural products. Background technique [0002] Selenium is an essential trace element for the human body, and its unique physiological function in the living body is affectionately called "life element". my country is a country with a serious imbalance in the distribution of selenium resources. There are several selenium-high-selenium regions and large selenium-deficient belts, and the per capita selenium intake in my country is generally low. Therefore, in China where selenium resources are relatively scarce, selenium The selenium-enriched agricultural products produced in the enrichment area can be described as the most direct and effective selenium supplement food for the selenium deficient population....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/24G01N33/10G01N21/64G01N27/62G01N27/626
CPCG01N33/24G01N33/10G01N21/6404G01N27/62G01N2033/245
Inventor 常传宇徐国敏黄国培
Owner INST OF GEOCHEM CHINESE ACADEMY OF SCI
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