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| Effects of soil dressing proportion on arsenic availability in soil and rape |
| Received:September 15, 2023 |
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| KeyWord:soil dressing proportion;available arsenic;rape;soil physicochemical property;absorption of arsenic |
| Author Name | Affiliation | E-mail | | WANG Xudong | Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China
Scientific Observation and Experiment Station of Yueyang, Ministry of Agriculture and Rural Affairs, Yueyang 414000, China | | | WEN Jiong | Scientific Observation and Experiment Station of Yueyang, Ministry of Agriculture and Rural Affairs, Yueyang 414000, China
Yueyang Agricultural Sciences Institute, Yueyang 414000, China | | | PENG Zhi | Scientific Observation and Experiment Station of Yueyang, Ministry of Agriculture and Rural Affairs, Yueyang 414000, China
Yueyang Agricultural Sciences Institute, Yueyang 414000, China | | | ZHANG Nan | Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China
Scientific Observation and Experiment Station of Yueyang, Ministry of Agriculture and Rural Affairs, Yueyang 414000, China | | | SU Shiming | Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China
Scientific Observation and Experiment Station of Yueyang, Ministry of Agriculture and Rural Affairs, Yueyang 414000, China | | | LI Yuxiang | Scientific Observation and Experiment Station of Yueyang, Ministry of Agriculture and Rural Affairs, Yueyang 414000, China
Yueyang Agricultural Sciences Institute, Yueyang 414000, China | | | PENG Limei | Hunan Division of GRG Metrology and Test, Changsha 410000, China | | | LI Hongbin | Hunan Division of GRG Metrology and Test, Changsha 410000, China | | | ZENG Xibai | Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China
Scientific Observation and Experiment Station of Yueyang, Ministry of Agriculture and Rural Affairs, Yueyang 414000, China | zengxibai@caas.cn |
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| Abstract: |
| To explore the long-term effects of soil remediation on arsenic-contaminated soil, micro-area experiments were performed in the Scientific Observation and Experiment Station of Yueyang, Ministry of Agriculture and Rural Affairs. The effects of different mixing ratios of soil dressing and polluted soil on soil arsenic content, rape growth, and arsenic absorption were evaluated. The results showed that the content of available arsenic in polluted soil was reduced by soil dressing, and this decrease was positively correlated with the proportion of soil dressing:the arsenic absorption of rapeseed decreased with the increasing proportion of soil dressing. When the proportion of soil dressing was 40%, the biomass of stems, leaves, and seeds reached the maximum value, which increased by 7.8% and 12.8% compared with the polluted soil. In addition, the arsenic content of root, stem, leaf, and seed decreased by 67.4%, 68.4%, and 82.2%, respectively, compared with the polluted soil. With the increased proportion of soil dressing, the mean weight diameter of soil aggregates increased, whereas the soil pH and cation exchange capacity decreased. The proportion of soil dressing had significant effects on soil available arsenic and physicochemical indexes such as pH, aggregate average weight diameter, cation exchange capacity, and other physical and chemical indexes, and the appropriate proportion of soil dressing promoted the growth of rape and greatly reduced its arsenic content. |
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