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| 铅胁迫对鱼腥草根际环境pH和电导率的影响 | |
| 引用本文： | 伍钧,曾宗梁,唐亚.铅胁迫对鱼腥草根际环境pH和电导率的影响[J].四川农业大学学报,2007,25(4):397-400. |
| 作者姓名： | 伍钧 曾宗梁 唐亚 |
| 作者单位： | 1. 四川大学,建筑与环境学院,成都,610065;四川农业大学,资源环境学院,四川,雅安,625014 2. 四川农业大学,资源环境学院,四川,雅安,625014 3. 四川大学,建筑与环境学院,成都,610065 |
| 摘 要： | 通过水培实验研究了不同铅浓度胁迫对2个来源地鱼腥草根际环境pH和电导率的影响。结果表明,鱼腥草根际环境的pH明显低于对照,说明铅处理可造成鱼腥草根际环境的酸化,但随着胁迫处理时间的延长,2个来源地鱼腥草根际环境的pH都呈现上升趋势,说明鱼腥草抑制了根际环境的酸化;电导率呈现先下降后上升再下降的趋势。铅胁迫对2个来源地鱼腥草根际环境pH和电导率的影响差异不大。 |
| 关 键 词： | 鱼腥草 铅 根际环境 pH 电导率 |
| 文章编号： | 1000-2650（2007）04-0397-04 |
| 收稿时间： | 2007-03-12 |
| 修稿时间： | 2007年3月12日 |
Effect of Lead on pH and Electroconductibility of the Rhizosphere Environment of Two Houttuynia cordata Thunbs |
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| WU Jun,ZENG Zong-liang,TANG Ya.Effect of Lead on pH and Electroconductibility of the Rhizosphere Environment of Two Houttuynia cordata Thunbs[J].Journal of Sichuan Agricultural University,2007,25(4):397-400. | |
| Authors: | WU Jun ZENG Zong-liang TANG Ya |
| Abstract: | The effects of lead stress on pH and electroconductibility of rhizosphere environment of two Houttuynia cordata thunbs were studied through hydroponic culture.The results showed that the pH of Houttuynia cordata thunbs rhizosphere environment decreased obviously under lead stress,which explained that lead created the rhizosphere environment of Houttuynia cordata thunbs acidified.Along with the time passage,the pH of Houttuynia cordata thunbs rhizosphere environment rose,which explained that root systems of two Houttuynia cordata thunbs suppressed acidization in rhizosphere environment.The electroconductibility increased first,later decreased,then increased again.The difference is low in lead affected the rhizosphere environment of two Houttuynia cordata thunbs. |
| Keywords: | pH |
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