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| Cd and As absorption and transport characteristics of rice in a paddy field co-contaminated by Cd and As |
| Received:March 24, 2017 |
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| KeyWord:rice;varieties;cadmium;arsenic;co-contamination |
| Author Name | Affiliation | E-mail | | SHAN Tian-yu | Beijing Key Laboratory of Environmental Damage Assessment and Remediation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
Key Laboratory of Land Surface Pattern and Simulation, Beijing 100101, China
University of Chinese Academy of Sciences, Beijing 100049, China | | | LIU Qiu-xin | Beijing Key Laboratory of Environmental Damage Assessment and Remediation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
Key Laboratory of Land Surface Pattern and Simulation, Beijing 100101, China
University of Chinese Academy of Sciences, Beijing 100049, China | | | YAN Xiu-lan | Beijing Key Laboratory of Environmental Damage Assessment and Remediation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
Key Laboratory of Land Surface Pattern and Simulation, Beijing 100101, China | yanxl@igsnrr.ac.cn | | SHAO Jin-qiu | Beijing Key Laboratory of Environmental Damage Assessment and Remediation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
Key Laboratory of Land Surface Pattern and Simulation, Beijing 100101, China
University of Chinese Academy of Sciences, Beijing 100049, China | | | LIAO Xiao-yong | Beijing Key Laboratory of Environmental Damage Assessment and Remediation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
Key Laboratory of Land Surface Pattern and Simulation, Beijing 100101, China | |
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| Abstract: |
| To explore safe methods to produce rice grown in paddy soil contaminated by Cd and As, this study selected six varieties of rice(four with low Cd absorption and two local varieties), and carried out field experiments in paddy soil contaminated by Cd and As in the red soil region of Shaoguan, Guangdong Province. The growth trends and characteristics of Cd and As absorption and transfer in low-absorption varieties and local varieties were evaluated. The results showed significant differences of yield among the different kinds of rice; the yields of the local varieties were significantly higher than those of the low-absorption varieties. Cd content in the low-absorption varieties was signifi cantly lower than in the local varieties, and As content of all the varieties was higher than the national standard(0.2 mg·kg-1). Cd and As content(0.05 mg·kg-1 and 0.31 mg·kg-1 respectively) were lowest in variety Jinyou268. Correlation analysis showed that the transport ability from shell to grain for low-absorption varieties was lower than that for the local varieties. Therefore, to reduce Cd and As content in rice which is growing in Cd-and As-contaminated paddy soil, it is important to select rice varieties with low Cd as well as low As absorption capacities. |
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