Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China.
College of Resources and Environment, Yunnan Agriculture University, Kunming, 650201, China.
Bull Environ Contam Toxicol. 2021 Dec;107(6):1143-1148. doi: 10.1007/s00128-021-03126-6. Epub 2021 Feb 9.
Accumulation and transfer of Cd by Sonchus asper intercropped with a legume crop, Vicia faba were determined via Cd as a tracer to assess the potential of Sonchus asper as a hyperaccumulator. In this study, Sonchus asper and Vicia faba were planted side by side in soils amended with arbuscular mycorrhizae, and Cd was applied to either Sonchus asper or Vicia faba planted soils while the neighboring plant received Cd across a nylon net impermeable to the roots. Mean concentration of Cd in the shoot of Sonchus asper was 7.0 times higher than Vicia faba. The translocation factor of Cd in Sonchus asper were 39 and 400 times higher than in Vicia faba under the Cd direct and indirect treatments, respectively. The results suggested that the intercropping of Sonchus asper as a hyperaccumulator with Vicia faba, might be a feasible approach for phytoremediation of Cd contaminated soil.
采用 Cd 示踪法研究了与豆科作物蚕豆间作对富集 Cd 的苦苣菜的积累和转移，以评估苦苣菜作为超富集植物的潜力。本研究采用丛枝菌根（AM）对土壤进行改良，将苦苣菜和蚕豆并排种植，将 Cd 施用于种植苦苣菜或蚕豆的土壤中，而相邻的植物则通过根系不可渗透的尼龙网接收 Cd。苦苣菜地上部分 Cd 浓度均值比蚕豆高 7.0 倍。在 Cd 直接和间接处理下，苦苣菜 Cd 的迁移系数分别比蚕豆高 39 倍和 400 倍。结果表明，将苦苣菜作为超富集植物与蚕豆间作可能是一种可行的 Cd 污染土壤植物修复方法。
