Influence of rhizosphere on nickel phytoextraction by Ricinus communis L. (Castor)

摘要：

The distribution of Ni in the rhizosphere was examined by using rhizobox system, composed of two compartments namely central and bulk soil compartments. Ricinus communis wild type plants were grown in the central compartment of the rhizobox system containing Alfisols added with 0, 50, 100, 250 and 500mg (Ni)·kg<-1> soil. The results showed that the DTPA extractable Ni content in the rhizosphere region was two times higher compared with non-rhizosphere region. The roots decreased the soil pH significantly compared with non rhizosphere zone. Nickel accumulation by Ricinus communis increased with increasing levels of Ni in the soil.

关键词： Alfisols nickel rhizobox rhizosphere Ricinus communis

作者: M. Malarkodi R. Krishnasamy T. Chitdeshwari

作者单位: Department of Soil Science and Agricultural Chemistry, Tamil Nadu Agricultural University, Coimbator Agricultural Research Station, Bhavanisagar, Erode, Tamil Nadu, India

会议类型: 国际会议

会议名称: 第九届痕量元素生物地球化学国际会议(9th International Conference on the Biogeochemistry of Trace Elements)

会议地点: 北京

会议语种:英文

页码: 207-208

在线出版日期: 2007-07-15（万方平台首次上网日期，不代表论文的发表时间）