To investigate the effect of iron plaque on phosphorus (P) utilization by broad-leaf cattail ( Typha latifolia L. ) in a lead (Pb) contaminated soil, we transplanted the broad-leaf cattail seedlings with iron plaque induced at two levels of Fe^2+ (20, 100 mg/L) in rhizobags into soils previously treated with four levels of Pb (0, 100, 500, 1000 mg/kg). After the plants grew four weeks under the waterlogged condition, the amounts of iron plaque on roots and P in plants were measured. The results showed that the over-ground and undergr...