【摘要】 贵阳车辆厂部分草坪因土壤中重金属含量超出土壤自洁阈值 ,导致草坪色泽、草坪草分蘖能力及其生物量和根系活力急剧下降。经调查分析该厂绿化区部分受污染土壤中Pb2 + 、Zn2 + 和Cd2 + 离子含量严重超标 ,其中Pb2 + 、Cd2 + 离子含量达到全国土壤平均值的 3～ 4倍。该厂绿化施工中回填土壤遭受重金属污染是草坪性状下降的主要原因更多还原

【Abstract】 Investigation results showed that the plants roots biomass and tillering ability reduced rapidly under heavy metals stress in same lawns in Guiyang Rolling Stock Repairing Company There wore high concentration of Pb, Zn and Cd in the soil, and the contents of Pb and Cd were 3～4 times of nationwide average Therefore the main reason of low lawn quality were the soils polluted by heavy metals更多还原