农业环境科学学报Issue(9)：1829-1836,8.DOI:10.11654/jaes.2015.09.028
施用城市污泥堆肥对土壤和青椒重金属积累的影响
Effects of Sewage Sludge Compost Application on Heavy Metal Accumulation in Soil and Green Pepper
摘要
Abstract
Sewage sludge composts applied to soil could supply soil organic matter and plant nutrients, but might also cause heavy metal pol-lution in soil and plants. In this study, a pot experiment was employed to investigate the effect of applying sewage sludge compost on heavy metal accumulation in soil and green pepper and to determine the maximum application rate of sewage sludge composts. The sewage sludge compost was mixed with soil at different ratios of compost:soil(m:m), i.e., 0:100, 1:99, 5:95, 10:90, 20:80, 40:60, 80:20 and 100:0. The total dry biomass of green pepper increased with sewage sludge compost ratio from 1%to 5%. At 5%compost, the total dry biomass of green pepper was 2.67g per plant with fruit weight of 0.84 g per plant. However, the total dry biomass and yield of green pepper decreased at the compost ratios higher than 5%. Concentrations of Cu, Zn, Pb, Cr and Cd in soil increased gradually with increasing rates of the compost. At 5%compost, the content of Cu, Zn, Pb, Cr, Cd and Ni in both soil and green pepper fruit did not exceed the national standards. These re-sults show that the acceptable application rate of the sewage sludge compost would be 5%.关键词
城市污泥堆肥/重金属/青椒/根际土/富集系数Key words
sewage sludge compost/heavy metal/green pepper/rhizosphere soil/enrichment coefficient分类
资源环境引用本文复制引用
王社平,程晓波,姚岚,刘新安,王怡,王同悦..施用城市污泥堆肥对土壤和青椒重金属积累的影响[J].农业环境科学学报,2015,(9):1829-1836,8.基金项目
陕西省教育厅产业化项目 （）
