中文摘要：

【目的】本研究探讨不同程度的根系互作方式对小花南芥和蚕豆生长、吸收和累积Pb的影响以及小花南芥和蚕豆根际不同互作方式效应分析。【方法】采用原子吸收分光光度法测量土壤和植株中的Ph含量，分析小花南芥和蚕豆根系采用PVC板隔开、尼龙筛布隔开、无隔板3种处理方式对植株吸收累积Pb的影响。【结果】（1）不同根系互作下，根系无隔板处理时，小花南芥和蚕豆生物量显著增加。（2）小花南芥Pb的累积量以无隔板较高，PVC板隔开较低；蚕豆Pb累积量以PVC板隔开较高，尼龙筛布隔开较低。（3）根际互作的总效应中，溶液效应占到70％左右，根系效应为30％左右。【结论】无隔板处理条件下，溶液效应（根系分泌物、根部共生菌等）是提高小花南芥Pb累积量，降低蚕豆Pb的累积量的主要原因。

英文摘要：

[ Purpose ] The objective was to explore the correlated influence factors for growth, absorp- tion accumulation of Pb by using different ways of roots interaction of Arabis alpina and Vicia faba. [ Method ] The content of lead in soil and plant was determined by atomic absorption spectrometry. A. alpina and V. faba roots interaction, including PVC board separated, a nylon mesh cloth separated, non separated. The effects of content of lead of A. alpina and V. faba were analyzed. [ Results] （1） With no separated, the total microbial number of Arabis alpina and V. faba was found on variety no separated increased. （2） A high Pb accumulation of A. alpina was found on variety no separated and a low on variety PVC board separated; a high Pb accumulation of V. faba was found on variety PVC board separated and a low on variety a nylon mesh cloth separated. （3） Solution effects accounted for about 70% and root effects about 30%. [ Conclusion] The role of the solution （ root exudates and root symbiotic bacteria） should be the main reason to improve Pb accumulation of A. alpina and to re-duce Pb accumulation of V. faba.