Inconsistent effects of limestone on rice cadmium uptake: Results from multi-scale field trials and large-scale investigation
文献类型：期刊论文
| 作者 | Yang, Yang; Wang, Meie; Chang, Andrew C.; Li, Yanling; Chen, Weiping ; Yang, Weiguang
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| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2020-03-20 |
| 卷号 | 709页码:1-10 |
| 关键词 | Sustainability Multi-scale trials Paddy field Limestone Probabilistic analysis |
| ISSN号 | 0048-9697 |
| 英文摘要 | Adding limestone into acidic paddy soils might reduce cadmium (Cd) accumulation in rice plants and the harvested grains but with inconsistent results in the field practice. We conducted three experiments of different field scales, including small-plots, multi-location trial, and large-scale field samplings of rice grown in a major production region of southern China, to investigate whether liming could sustainably limit the Cd phytoavailability to rice. Forty-eight physical, chemical, and biological attributes associated with paired soils and plants were collectively analyzed. Rice Cd uptake was significantly reduced when moderate dosage (2.25-3 tha(-1)) of liming was present in the soils. The limes decreased rice Cd uptake by reducing the Cd concentrations of soil solution phase and regulating Ca2+ and Cd2+ competitions for absorption sites at root surfaces. Soil Zn hardly any effect on rice Cd uptake. Rice Cd uptake was suppressed at the higher rates of liming (4.5-9 t ha(-1)) due to the heavy loss of soil labile Mn. The tendencies of over compensating were soil-, plant-, and climate-dependent and were estimated by a transfer function and the risks were characterized using probabilistic analysis. The sustainable doses of limestone that reduced grain Cd accumulation, but did not compromise yield, or disrupt the rice rhizosphere was 3 t ha(-1) annually incorporated two weeks before the seedlings were transplanted. (C) 2019 Elsevier B.V. All rights reserved. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/44344]  |
| 专题 | 生态环境研究中心_城市与区域生态国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Yang, Yang,Wang, Meie,Chang, Andrew C.,et al. Inconsistent effects of limestone on rice cadmium uptake: Results from multi-scale field trials and large-scale investigation[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2020,709:1-10. |
| APA | Yang, Yang,Wang, Meie,Chang, Andrew C.,Li, Yanling,Chen, Weiping,&Yang, Weiguang.(2020).Inconsistent effects of limestone on rice cadmium uptake: Results from multi-scale field trials and large-scale investigation.SCIENCE OF THE TOTAL ENVIRONMENT,709,1-10. |
| MLA | Yang, Yang,et al."Inconsistent effects of limestone on rice cadmium uptake: Results from multi-scale field trials and large-scale investigation".SCIENCE OF THE TOTAL ENVIRONMENT 709(2020):1-10. |
入库方式： OAI收割
来源：生态环境研究中心
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