Effect of heavy metal contamination on the population of sulfate-reducing bacteria and the sulfate-reducing activity in paddy rice soils Current situation and prospect on the remediation of soils contaminated by heavy metals Hyperaccumulators and phytoremediation of heavy metal contaminated soil:a review of studies in China and abroad Effects of environmental materials on maize growth and soil remediation of Pb and Cd contaminated soils A review on the functions of microorganisms in the phytoremediation of heavy metal-contaminated soils