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Method for promoting heavy metal cadmium accumulation in rice stems by 24-epicastasterone and rice plants cultivated according to method

A technology of epibrassina and heavy metals, which is applied in the fields of rice cultivation, horticultural methods, botanical equipment and methods, etc., can solve the problems of expensive restoration methods, etc., and achieve the effects of alleviating high costs, easy operation, and reduced operational difficulty

Inactive Publication Date: 2017-10-24
CHINA JILIANG UNIV
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  • Application Information

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Problems solved by technology

[0005] Therefore, a method to promote the accumulation of heavy metal cadmium in rice stems is studied. This method has the advantages of simple operation, environmental friendliness, low price, and convenient recycling of cadmium. At the same time, it can inhibit the accumulation of cadmium in rice brown rice. While ensuring that brown rice meets the national edible standard (the highest limit standard for heavy metal cadmium content in brown rice is 0.2mg / kg in China), it can also effectively alleviate the existing cadmium-contaminated soil restoration methods, which are expensive, complicated to operate, and require special instruments. And the problem of long repair period has become very necessary and urgent

Method used

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  • Method for promoting heavy metal cadmium accumulation in rice stems by 24-epicastasterone and rice plants cultivated according to method
  • Method for promoting heavy metal cadmium accumulation in rice stems by 24-epicastasterone and rice plants cultivated according to method
  • Method for promoting heavy metal cadmium accumulation in rice stems by 24-epicastasterone and rice plants cultivated according to method

Examples

Experimental program
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Effect test

Embodiment 1

[0047] First, 24-epibrassinolide was prepared into an aqueous solution with a concentration of 140 μg / L with distilled water, and then in the process of rice planting in cadmium-contaminated soil, the above-mentioned 24-epibrassinolide solution was used in the rice seedling stage and tillering stage 1. Spraying the rice leaves continuously on the 1st to 14th days after the heading stage and flowering stage, the spraying amount of 24-epibrassinolide solution in the spraying treatment is 330L / day per mu. The whole planting process of rice is carried out by conventional field management.

Embodiment 2

[0049] Firstly, 24-epibrassinolide was prepared into an aqueous solution with a concentration of 160 μg / L with distilled water, and then in the process of rice planting in cadmium-contaminated soil, the above-mentioned 24-epibrassinolide solution was used at the rice seedling stage and tillering stage 1. Spraying the rice leaves continuously on the 1st to 14th days after the heading stage and flowering stage, the spraying amount of 24-epibrassinolide solution in the spraying treatment is 330L / day per mu. The whole planting process of rice is carried out by conventional field management.

Embodiment 3

[0051] First, 24-epibrassinolide was prepared into an aqueous solution with a concentration of 145 μg / L with distilled water, and then in the process of rice planting in cadmium-contaminated soil, the above-mentioned 24-epibrassinolide solution was used in the rice seedling stage and tillering stage 1. Spraying the rice leaves continuously on the 1st to 14th days after the heading stage and flowering stage, the spraying amount of 24-epibrassinolide solution in the spraying treatment is 330L / day per mu. The whole planting process of rice is carried out by conventional field management.

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Abstract

The invention relates to the technical field of metal pollution treatment and provides a method for promoting heavy metal cadmium accumulation in rice stems by 24-epicastasterone and rice plants cultivated according to the method. 24-epicastasterone with concentration of 140-160microgram / L is adopted for rice foliage spraying in a planting process of rice in cadmium polluted soil, and heavy metal cadmium accumulation in rice stems can be evidently promoted through spraying treatment while cadmium accumulation in coarse rice is inhibited. The method has advantages of simplicity and convenience in operation, environmental friendliness, low cost, convenience in cadmium recycling and the like, and problems of high cost, complexity in operation, consumption of special instruments and long remediation period of existing cadmium polluted soil remediation methods can be effectively alleviated. In addition, as the rice is a conventional crop, conventional agricultural methods can be adopted for field management of rice, so that difficulty in operation of the soil remediation method is lowered.

Description

technical field [0001] The invention relates to the technical field of heavy metal pollution control, in particular to a method for promoting accumulation of heavy metal cadmium in rice stems by using 24-epibrassinolide and rice plants prepared therefrom. Background technique [0002] Heavy metal pollution in the environment has the characteristics of concealment, long-term and irreversibility. The pollutants have poor mobility in the medium, long residence time, cannot be degraded by microorganisms, and can also be transmitted through the food chain, eventually affecting human health. With the huge emergence and development of my country's industrial and agricultural activities after the reform and opening up, the heavy metal pollution in farmland has continued to intensify, and heavy metal pollution incidents have also occurred frequently. Heavy metals such as cadmium have caused pollution to farmland ecosystems such as rice fields, wheat fields, and corn fields. , heavy me...

Claims

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Application Information

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IPC IPC(8): A01G7/06A01G16/00A01N43/22A01P21/00B09C1/00A01G22/22
CPCA01G7/06A01N43/22B09C1/105B09C2101/00
Inventor 张怡婷王飞娟朱诚陈志祥丁艳菲孙骏威贺希格都楞江琼易可可王俊敏
Owner CHINA JILIANG UNIV
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