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Method for reducing cadmium content of brown rice by adjusting soil indexes

A soil and rice technology, applied in the field of heavy metal pollution prevention and control of agricultural products, can solve the problems of heavy metal pollution, cadmium exceeding the standard, etc., achieve the effect of reducing cumulative content and simple operation

Inactive Publication Date: 2019-01-18
TIANJIN INSTITUE OF QUALITY STANDARD & TESTING OF AGRICULTUAL PRODS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, according to relevant reports, the cadmium pollution of rice in the southern market is more serious than that in the north, but the phenomenon of cadmium exceeding the standard in the north also occurs from time to time, and with the extension of the planting years, the accumulation of heavy metals will continue, and the problem of heavy metal pollution will become more serious

Method used

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  • Method for reducing cadmium content of brown rice by adjusting soil indexes
  • Method for reducing cadmium content of brown rice by adjusting soil indexes
  • Method for reducing cadmium content of brown rice by adjusting soil indexes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The rice variety used was Tsuhara 47.

[0024] A plastic pot with a diameter of about 30 cm was used to fill 6.0 kg of the test soil, and the local non-polluting irrigation water was used for flooding and soaking for a week, and 1.0 g of compound fertilizer was added as the base fertilizer. Weigh a certain amount of cadmium chloride, prepare 1000mL solution with deionized water, add it to the test soil according to different treatment gradients, and mix 360g soil conditioner into each pot of soil.

[0025] Three parallel experiments were performed for each concentration gradient, and a control experiment was performed, with a total of 18 potted plants. At the end of May 2016, the seedlings were removed and transplanted, and then managed according to the rice planting procedures, and water was stopped two weeks before harvest, and finally harvested at the end of September.

[0026] After the rice is harvested, the aboveground part is separated from the stems, leaves and...

Embodiment 2

[0030] The rice variety used was Tsuhara 11.

[0031] A plastic pot with a diameter of about 30 cm was used to fill 6.0 kg of the test soil, and the local non-polluting irrigation water was used for flooding and soaking for a week, and 1.0 g of compound fertilizer was added as the base fertilizer. Weigh a certain amount of cadmium chloride, prepare 1000mL solution with deionized water, add it to the test soil according to different treatment gradients, and mix 360g soil conditioner into each pot of soil.

[0032] Three parallel experiments were performed for each concentration gradient, and a control experiment was performed, with a total of 18 potted plants. At the end of May 2016, the seedlings were removed and transplanted, and then managed according to the rice planting procedures, and water was stopped two weeks before harvest, and finally harvested at the end of September.

[0033] After the rice is harvested, the aboveground part is separated from the stems, leaves and...

Embodiment 3

[0037] The rice variety used was Tsuhara E28.

[0038] A plastic pot with a diameter of about 30 cm was used to fill 6.0 kg of the test soil, and the local non-polluting irrigation water was used for flooding and soaking for a week, and 1.0 g of compound fertilizer was added as the base fertilizer. Weigh a certain amount of cadmium chloride, prepare 1000mL solution with deionized water, add it to the test soil according to different treatment gradients, and mix 360g soil conditioner into each pot of soil.

[0039] Three parallel experiments were performed for each concentration gradient, and a control experiment was performed, with a total of 18 potted plants. At the end of May 2016, the seedlings were removed and transplanted, and then managed according to the rice planting procedures, and water was stopped two weeks before harvest, and finally harvested at the end of September.

[0040] After the rice is harvested, the aboveground part is separated from the stems, leaves an...

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Abstract

The invention discloses a method for reducing the cadmium content of brown rice by adjusting soil indexes. A soil conditioner with a fixed ratio is added into the soil for planting rice, and organic matter and pH indexes of the soil are adjusted, so that the cadmium content in the brown rice is reduced. According to the technical scheme, experiments of local mainly-planted rice varieties in Tianjin are carried out with pertinence, the method is environmentally, safe, efficient, capable of being implemented during large-scale local planting and easy to operate, and the technical support is provided for management and control of the cadmium content of the local mainly-planted varieties.

Description

technical field [0001] The invention relates to a method for reducing the cadmium content of brown rice in potted rice by adjusting soil indexes, in particular to the method for reducing the cadmium content of the main rice variety in Tianjin area, and belongs to the field of heavy metal pollution prevention and control of agricultural products. Background technique [0002] Rice is the grain crop with the largest planting area and the highest yield per unit area in my country. Nearly two-thirds of the country's population uses rice as a staple food. The quality of rice not only directly affects human health, is related to the improvement and improvement of the quality of life of the people, but also plays a key role in social stability. However, in recent years, the problem of excessive heavy metal cadmium (Cd) in rice has become increasingly prominent, which has sounded the alarm for the safety of grain production in my country. In 2002, the Rice and Products Supervision,...

Claims

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Application Information

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IPC IPC(8): A01G22/22C09K17/40C09K101/00C09K109/00
CPCA01G22/22C09K17/40C09K2101/00C09K2109/00
Inventor 殷萍陈秋生张强张玺刘烨潼孟兆芳
Owner TIANJIN INSTITUE OF QUALITY STANDARD & TESTING OF AGRICULTUAL PRODS
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