Preparation for reducing accumulation of cadmium in crops and application method thereof

A technology for crops and preparations, applied in botany equipment and methods, animal repellants, plant growth regulators, etc., can solve the problems of high cost and large amount of application, and achieve the effect of simple operation, low cost and simple preparation

Inactive Publication Date: 2014-08-13
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although the above studies can alleviate cadmium toxicity, they all adopt the method of co-cultivation of mitigating factors and Cd, and there is no practical method in actual research and production; A series of problems such as high

Method used

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  • Preparation for reducing accumulation of cadmium in crops and application method thereof
  • Preparation for reducing accumulation of cadmium in crops and application method thereof
  • Preparation for reducing accumulation of cadmium in crops and application method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Embodiment 1, this preparation is used for reducing the cadmium in rice

[0017] The components and concentrations of the Cd accumulation reduction formulation are as follows:

[0018] A solution: reduced glutathione 50mg / L, sodium selenite 15mg / L, zinc sulfate 2.0×10 3 mg / L,

[0019] Solution B: sodium silicate 2.84×10 3 mg / L.

[0020] Preparation method: Spray solution A on leaves at seedling / tillering stage and heading stage / full heading stage respectively, spray A solution after 10 days, and spray B solution at heading stage. In addition, ammonium nitrate and ammonium sulfate were used as nitrogen sources in the control group and the treatment group, respectively. Rice grains were taken at the maturity stage to determine the heavy metal content. The results are shown in Table 1.

[0021] Table 1 Heavy metal content in rice grains of treatment and control group (mg kg -1 ) and yield (kg ha -1 )

[0022]

[0023] *, percent reduction of treatment compared ...

Embodiment 2

[0030] Embodiment 2, this preparation is used for reducing the cadmium in barley

[0031] The components and concentrations of the preparation for reducing Cd accumulation are as follows: reduced glutathione 50 mg / L, sodium selenite 15 mg / L, zinc sulfate 2.0×10 3 mg / L.

[0032] Preparation method: after the above-mentioned components are evenly mixed into a solution, spray on the foliage at the stage of two leaves and one heart until it is wet, spray once every 5 days, and spray 2 times in total; take samples 10 days after the first spray, 8 times Repeat, plant 12 plants per pot. The Cd content of different treatments is shown in Table 4.

[0033] Table 4 Effects of foliar spraying GSH+Se+Zn on Cd content and biomass of barley under Cd stress

[0034]

[0035] *, percentage reduction of Cd+GSH+Se+Zn treatment group compared to Cd treatment group. a, b and c represent significant differences at the 0.05 level.

[0036] Compared with the control group, the average Cd con...

Embodiment 3

[0037] Embodiment 3, this preparation is used for reducing the cadmium in rice

[0038] The components and concentrations of the preparation for reducing Cd accumulation are as follows: Solution A: reduced glutathione 65mg / L, sodium selenite 22mg / L, zinc sulfate 2.5×10 3 mg / L, solution B: sodium silicate 2.5×10 3mg / L. Using method is the same as embodiment 1.

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Abstract

The invention belongs to the fields of soil heavy-metal pollution treatment in environment protection and agricultural product safety, and relates to a preparation for reducing accumulation of cadmium in crops and an application method thereof. The preparation for reducing accumulation of cadmium in crops comprises the compositions with the following concentration: 50-80 g/L of reduced glutathione, 15-30 mg/L of sodium selenite and 2.0-3.0*10<3> mg/L of zinc sulfate. The crops mean paddy rice or barley. The preparation has the advantages of preparing simpliness, usage convenience, no toxic and side effects, low cost and the like. The preparation is used by spraying on leaf surfaces, the operation is similar to operation of spraying pesticides, the application method is simple and easy to operate, and the preparation is also capable of improving the content of zinc, selenium and other nutritional elements in the crops. The preparation is applicable to paddy rice, barley and other crops for producing low-cadmium products, and is suitable for popularization application in moderate/mild cadmium-pollution regions.

Description

technical field [0001] The invention belongs to the fields of soil heavy metal pollution control and agricultural product safety in environmental protection, and relates to a preparation for reducing cadmium accumulation in crops and a use method thereof. Background technique [0002] Cadmium (Cd) is known to be one of the most toxic and most polluting heavy metals in farmland. At the same time, Cd has strong mobility and is easily absorbed by plants and transferred to the aboveground parts. If it exceeds a certain limit, it will not only damage the growth and development of crops, but also lead to a decline in yield and quality, and may even threaten human health through the food chain. Therefore, reducing Cd accumulation can not only improve the quality of crops, protect the ecological balance, but also reduce the health risks brought by Cd to humans. According to reports, rice cadmium pollution is the main problem of heavy metal pollution in Japan; the determination and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00A01N37/46A01P21/00
Inventor 曹方彬林莉邬飞波
Owner ZHEJIANG UNIV
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