干旱区绿洲土壤Cd-Zn与Cd-Zn-Pb复合污染对芹菜生长吸收特征影响的比较  

Comparisons between the characteristics of growth and uptake of celery under Cd-Zn and Cd-Zn-Pb stress in arid oasis soils

作　　者：颜斌[1] 南忠仁[1] 赵转军[1] 胡亚虎[1] 王兆炜[1] 杨一鸣[1] 

机构地区：[1]兰州大学资源环境学院,兰州730000

出　　处：《兰州大学学报（自然科学版）》2013年第3期327-331,共5页Journal of Lanzhou University(Natural Sciences)

基　　金：国家自然科学基金项目(51178209;91025015);中央高校基本科研业务费专项资金项目(lzujbky-2010-97;lzujbky-2011-66)

摘　　要：通过盆栽试验对干旱区绿洲土壤Cd-Zn和Cd-Zn-Pb复合胁迫下芹菜对Cd,Zn的吸收积累和迁移规律进行了研究.结果表明:在Cd-Zn和Cd-Zn-Pb复合胁迫下,芹菜根系干重呈减小趋势,而茎叶干重则先增加后减小.Pb对芹菜的生长为先促进后抑制,对芹菜根系和茎叶吸收Cd,Zn具有一定的促进作用,促进了Cd,Zn从土壤到芹菜根系和茎叶的富集,对Cd,Zn从芹菜根系到茎叶具有一定的阻碍作用.Pot experiments were conducted to observe the laws about the uptake,accumulation and transferring of Cd and Zn in celery roots and shoots under Cd-Zn and Cd-Zn-Pb stress in arid oasis soil and the results show that the dry weight of celery roots had a decreasing trend,and that the dry weight of celery shoots at first increased and then decreased.The growth of celery roots and shoots was promoted and then inhibited with Pb having been added.Owing to the added Pb the uptake of Cd and Zn became easier and the accumulation of Cd and Zn from soils to roots and shoots was promoted,while the transferring of Cd and Zn from roots to shoots was inhibited to a certain extent.

关 键 词：绿洲土壤 CD ZN Pb 复合污染 吸收特征 

分 类 号：X53[环境科学与工程—环境工程]