中文摘要：

采用盆栽试验,研究不同浓度铅（0,500,1 000,1 500mg/kg）处理下,14种草本植物对土壤铅形态的影响。结果表明：种植不同植物对土壤铅形态的影响差异很大,藜、新麦草在各铅浓度处理下土壤交换态铅含量均〈对照〈其余12种植物,且土壤残渣态铅为所有植物中最高,在1 500mg/kg铅处理下分别为717.74,700.45mg/kg,表明二者有着较强的钝化土壤铅的能力,可用于铅污染土壤的植物固定和植被恢复。红叶苋、绿叶苋各处理下交换态铅含量均为所有植物中最高,在1 500mg/kg铅处理下,分别达71.39,69.40mg/kg,分别为对照的3.7,3.6倍;土壤残渣态铅和全铅显著低于对照,为14种植物中最低,在1 500mg/kg铅处理下,全铅含量分别为1 372,1 388mg/kg,分别比对照降低了7.9%和6.8%,说明二者有溶解土壤铅的作用,可用于铅污染土壤的活化萃取。

英文摘要：

A pot experiment was conducted to study the effects of 14 herbaceous plants on Pb speciation in different Pb treatment（0,500,1 000,1 500 mg/kg）.The results showed that effects of different plants on Pb speciation in soil had great difference.Exchangeable Pb in all Pb treatment in the soil of Chenopodium album and Psathyrostachys juncea were less than the control,and the control was less than other 12 plants;and residual Pb was the highest in all plants with the value of 717.74,700.45 mg/kg in 1 500 mg/kg Pb treatment respectively,indicating both had strong ability in inactivating Pb and could be used in phytostabilization and revegetation in Pb-polluted soil.In the soil of Amaranthus tricolor of ＇red leaf＇ and ＇green leaf＇,exchangeable Pb was the highest in all plants in all Pb treatment,with the value of 71.39,69.40 mg/kg in 1 500 mg/kg Pb treatment which were respectively 3.7,3.6 times of the control;residual Pb and total Pb were significantly lower than control and they were the lowest in all plants.The value of total Pb were 1 372,1 388 mg/kg in 1 500 mg/kg Pb treatment,dropped 7.9% and 6.8% respectively compared with the control,suggesting they could dissolve Pb and could be used in activation and extraction Pb of polluted soil.