水土保持学报2012，Vol.26Issue(2)：251-255,5.
施用沼液对土壤和玉米重金属累积的影响
Effect of Biogas Slurry on Heavy Metal Accumulation of Soil and Maize
摘要
Abstract
A field study was conducted by mesuring the variation of production maize grain and contents of Cd,Cr,Pb,As and Hg in the soil and maize grain in order to investigate the influence of biogas supplementation on the accumulation of heavy metals in the soil and plant.The results showed that：（1）The application of biogas slurry as well as the chemical fertilizer significantly increased the maize production by 5.56%～13.19% and the higher maize production was obtained when the slurry application were controlled at 5 000～7 000 kg/（667 m2）.（2）Although contents of Cd,Cr and Hg in soil added with biogas slurry were slightly increased,no difference was detected in contents of Pb and As in soil when compared with control,contents of all of the tested heavy metals were lower than the corresponding limitations in the National Soil Environmental Quality Standards（GB 15618-1995）.（3）Caused by the biogas slurry,contents of Cd,Cr and Pb in maize grain were slightly increased,contents of As were not changed significantly,Hg was not detected,however,contents of all the mentioned heavy metals were below the limit of the National Food Safety standard（GB 2762-2005）.It indicated that an appropriate application of biogas slurry in soil-plant system achieved the resource utilization while no heavy metal contamination was pressured to soil and plant.关键词
沼液/玉米/土壤/重金属Key words
biogas slurry/maize/soil/heavy metal分类
资源环境引用本文复制引用
赵麒淋,伍钧,陈璧瑕,吕汶霖..施用沼液对土壤和玉米重金属累积的影响[J].水土保持学报,2012,26(2):251-255,5.基金项目
国家科技支撑计划课题 （）
