农林废弃物阻控土壤中重金属对蔬菜污染的效果  

Inhibiting Effect of Agriculture and Forestry Waste on Uptake of Heavy Metals by Vegetables

作　　者：王丹 周旋 吕靖龙 

机构地区：[1]武汉工程大学化学与环境工程学院,湖北武汉430205

出　　处：《武汉工程大学学报》2018年第1期35-39,共5页Journal of Wuhan Institute of Technology

摘　　要：将豆苗种植于人工模拟的重金属污染土壤中,其土壤中镉、铅污染物浓度分别为0.3 mg/kg、300.0mg/kg。通过在土壤中投加不同比例的香菇根和皂素废渣,考察了其阻控土壤中重金属铅和镉对蔬菜污染的效果。结果表明:土壤中含有适量的香菇根和皂素废渣可促进植物豆苗的生长;当香菇根或皂素废渣的添加浓度为30.0 g/kg时,对铅的阻控效率最高(阻控率分别达到49%、19%),当皂素废渣的添加浓度为10.0 g/kg时,对镉的阻控效率最高(阻控率达到9%)。说明了香菇根和皂素废渣对土壤中铅和镉的污染都有一定的阻控作用。Bean seedlings were planted in simulated heavy metal contaminated soil with cadmium of 0.3 mg/kgand lead of 300.0 mg/kg,respectively. We investigated the inhibiting effects of waste residues on uptake of leadand cadmium heavy metals by vegetables with addition of different proportions of lentinus edodes root anddiosgenin waste residues into the soil. It was found that the appropriate amount of lentinus edodes roots ordiosgenin waste residues in soil could promote the growth of bean seedlings. When the addition of lentinusedodes root or diosgenin waste residues were 30.0 g/kg,the inhibiting effect of lead was best（the inhibiting ratewere 49% and 19%,respectively）. When the addition of diosgenin waste residues were 10.0 g/kg,theinhibiting effect of cadmium was greatest（the inhibiting rate was 9%）. These results indicated that bothlentinus edodes root and diosgenin waste residues had some inhibiting effects on uptake of lead and cadmium bybean seedlings.

关 键 词：农林废弃物 重金属污染 阻控 蔬菜 

分 类 号：X53[环境科学与工程—环境工程]