Growth response of Sesbania rostrata and S. cannabina to sludge-amended lead/zinc mine tailings. A greenhouse study.
Growth response of Sesbania rostrata and S. cannabina to sludge-amended lead/zinc mine tailings. A greenhouse study.
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DOI：
10.1016/s0160-4120(01)00026-5
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发表时间：
2001-05
影响因子：
11.8
通讯作者：
Z. H. Ye;Z.Y Yang;G.Y.S. Chan;M. H. Wong
中科院分区：
文献类型：
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作者：
Z. H. Ye;Z.Y Yang;G.Y.S. Chan;M. H. Wong
豆类是缺乏氮 (N) 的金属开采荒地重新植被的理想选择。进行了一项温室研究，以调查使用田菁和大麻用于铅/锌 (Pb/Zn) 尾矿回收的可行性，并评估使用污水污泥（0%、25%、50% 和 75%，v/v）进行有机改良的效果。结果表明，这两个物种都可以在剧毒尾矿基质上继续生长至少80天，尽管它们的生长受到了不利影响。具有茎和根瘤的 S. rostrata 比 S. cannabina 有更好的生长（生物量、生长速率和生物量），这表明 S. rostrata 是作为尾矿重新植被的先驱物种的更好选择。尾矿对茎瘤的不利影响不如根瘤明显。污泥的施用增加了尾矿基质中总碳（C）、氮、磷（P）和钾（K）的含量，并降低了总锌、铅、镉以及DTPA可萃取的铅和镉的含量。这些反过来又减少了植物组织中金属（锌、铅和镉）的吸收和积累，并改善了植物生长性能，包括生物量、生长速率、茎结瘤。百分之五十（v/v）的污泥施用率是植物生长的最佳负荷率。
Legumes are ideal for revegetation of metal-mined wastelands which lack nitrogen (N). A greenhouse study was conducted to investigate the feasibility of using Sesbania rostrata and S. cannabina for the reclamation of lead/zinc (Pb/Zn) mine tailings and to evaluate the effects of organic amendment using sewage sludge (0%, 25%, 50%, and 75%, v/v). The results showed that both species could continue to grow on the highly toxic tailings substrata for at least 80 days, although their growth suffered from adverse effects. That S. rostrata with stem and root nodules had better growth (biomass, growth rates, and biomass of nodules) than S. cannabina suggested that S. rostrata is a better choice as a pioneer species for revegetation of the mine tailings. Stem nodules had less obvious adverse effects imposed by tailings than root nodules. Application of sewage sludge increased contents of total carbon (C), N, phosphorus (P), and potassium (K), and reduced total Zn, Pb, Cd, and DTPA-extractable Pb and Cd in tailings substrata. These, in turn, reduced metal (Zn, Pb, and Cd) uptake and accumulation in plant tissues, and improved plant growth performance, including biomass, growth rates, stem nodulation. Fifty percent (v/v) of sludge application rate was the best loading rate for plant growth.