Effect of increasing amounts of goethite, ferrihydrite and allophane on plant As and P uptake

摘要：

A compartment system approach was used to evaluate whether plants increase As mobility and uptake in the attempt to mobilise P from soil mineral phases differing in their sorption capacity and affinity to phosphate and arsenate. With increasing amounts of goethite and ferrihydrite P to As ratio in soil solution increased while a decrease was observed with increasing amounts of allophane. Plant induced mobilisation of As was not observed in any of the treatments while mobilisation of P occurred in the treatment receiving 1 g·kg<-1> goethite. The differences in soil solution P to AS ratio and P mobilisation were reflected in plant AS and P uptake.

关键词： Competitive adsorption remobilization rhizosphere soil solution Zea rnays

作者: D. Vetterlein K. Szegedi J. Ackermann A. Kaufhold J. Mattusch H. U. Neue H. Taneberg R. Jahn

作者单位: UFZ Helmholtz Centre for Environmental Research, Department of Soil Ecology, Theodor-Lieser-Str. 4, Soil Science and Soil Protection Group, Institute of Agricultural and Nutritional Sciences, Martin-L

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: 885-886

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）