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| Effects of different soil dressing ratios on soybean growth and absorption of arsenic in arsenic contaminated soil |
| Received:March 09, 2017 |
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| KeyWord:soil dressing proportion;arsenic;soybean;contaminated soil;available As |
| Author Name | Affiliation | E-mail | | WU Hui-bin | Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Key Laboratory of Agro-Environment, Ministry of Agriculture of China, Beijing 100081, China | | | ZENG Xi-bai | Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Key Laboratory of Agro-Environment, Ministry of Agriculture of China, Beijing 100081, China | zengxibai@caas.cn | | TANG Yue-feng | Yueyang Agricultural Sciences Institute/Yueyang Agricultural Environment Scientific Experiment Station, Ministry of Agriculture of China, Yueyang 414000, China | | | BAI Ling-yu | Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Key Laboratory of Agro-Environment, Ministry of Agriculture of China, Beijing 100081, China | | | SU Shi-ming | Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Key Laboratory of Agro-Environment, Ministry of Agriculture of China, Beijing 100081, China | | | WANG Ya-nan | Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Key Laboratory of Agro-Environment, Ministry of Agriculture of China, Beijing 100081, China | | | CHEN Ge | Yueyang Agricultural Sciences Institute/Yueyang Agricultural Environment Scientific Experiment Station, Ministry of Agriculture of China, Yueyang 414000, China | |
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| Abstract: |
| A field micro-plot experiment was conducted at the Yueyang experimental station at the Ministry of Agriculture of China to determine the effects of different soil-dressing methods, containing different proportions of soil dressing, on soybean growth and arsenic uptake. The results indicated that mixtures of contaminated soil and virgin soil in different proportions can decrease the soil arsenic content to different degrees. Reduction of the arsenic content of soil was positively correlated with the proportion of soil dressing. In addition, soybean arsenic uptake and accumulation also decreased as the proportion of soil dressing increased. Compared with the control(contaminated soil), soil dressing treatment C(mixing proportion V/V=polluted soil:clean soil=60:40) had the highest total aboveground biomass dry weight of soybean stems, leaves, pods, and seeds. Meanwhile, the As content of roots, stems, leaves, pods and seeds were lower than those of the control treatment, by 30.1%, 45.3%, 39.8%, 66.9%, and 82.8%, respectively. Increasing the thickness of the soil dressing also effectively reduced the absorption and accumulation of As in soybean tissues. Correlation analysis showed that As content of soybean tissues with different soil dressing treatments was significantly positively correlated with the soil available As content. These research results provide effective support for soil-dressing remediation of soil contaminated by arsenic and other elements. |
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