Application of NaHS as foliage conditioner for preventing and controlling accumulation of cadmium on paddy rice

A conditioner and rice technology, applied in the field of foliar conditioners, can solve the problems of inability to apply, complicated operation and high cost, and achieve the effects of low cost, small dosage and easy operation.

Active Publication Date: 2014-09-10
AGRO ENVIRONMENTAL PROTECTION INST OF MIN OF AGRI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

H from NaHS 2 S, Cd and other metals are easy to form CdS and other precipitates, so root application of NaHS cannot be applied in rice production. At the same time, the amount of root application of NaHS is large, the operation is cumbersome, and the cost is high.

Method used

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  • Application of NaHS as foliage conditioner for preventing and controlling accumulation of cadmium on paddy rice
  • Application of NaHS as foliage conditioner for preventing and controlling accumulation of cadmium on paddy rice
  • Application of NaHS as foliage conditioner for preventing and controlling accumulation of cadmium on paddy rice

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Embodiment Construction

[0024] The present invention will be described in further detail below through specific examples. The following examples are only descriptive, not restrictive, and cannot limit the protection scope of the present invention.

[0025] A kind of application of NaHS as the foliage conditioner of preventing and controlling the accumulation of cadmium in rice, the application method is as follows:

[0026] The concentration of sodium hydrosulfide aqueous solution is 50μmolL -1 ;

[0027] Preparation method: Take the preparation of 1L solution as an example, weigh 0.0028g of NaHS solid, dissolve it in deionized water (or tap water), then add 40mL of absolute ethanol and 10mL of Tween 80 mixture, stir while adding, and finally dissolve to 1L ;

[0028] The spraying method is: starting from the heading stage of rice, spray once every 7 days, and spray 5 times continuously;

[0029] The amount of spraying is: 50mL per plant for potted plants, and 75L per mu for field.

[0030] Scope...

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Abstract

The invention relates to the application of NaHS as a foliage conditioner for preventing and controlling the accumulation of cadmium on paddy rice. The spraying concentration of the NaHS is 40 to 60 mu mol L<-1>. The NaHS is continuously sprayed for five times with once every 7 days at the beginning of a heading stage of the paddy rice. 40 to 60 milliliters of NaHS is sprayed for every potted plant every time, and 70 to 80 milliliters of NaHS is sprayed to every acre of land. The NaSH is dissolved for volume fixation directly by water, and a 0.03 to 0.04 percent V/V solubilizing assistant anhydrous ethanol and a 0.005 to 0.02 percent V/V surfactant are added to prepare the NaSH. The enrichment of cadmium on the paddy rice is controlled by spraying NaSH on foliages, and after the NaSH is sprayed, the content of cadmium on paddy rice grains, rice husks and the upper and lower parts of the ground is remarkably reduced, and the risks of production of cadmium rice are greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of environmental pollution control and agricultural product quality and safety, and specifically discloses the application of NaHS as a leaf conditioner for preventing and controlling cadmium accumulation in rice. Background technique [0002] Cadmium (Cd) pollution exists widely in the world and is becoming more and more serious. The area of ​​land polluted by cadmium in my country has exceeded 200,000 mu. In April 2011, the State Council approved the "Twelfth Five-Year Plan for Comprehensive Prevention and Control of Heavy Metal Pollution", cadmium was listed as the first category of planning objects, and it was clearly stated that heavy metal pollution control and restoration of agricultural product production areas should be carried out. At the beginning of 2011, some media reported that "10% of rice in my country has cadmium exceeding the standard", which aroused widespread concern among the public abou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G7/06
Inventor 王瑞刚孙健冯人伟郭军康丁永祯徐应明
Owner AGRO ENVIRONMENTAL PROTECTION INST OF MIN OF AGRI
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