Cu、As及其复合污染对小麦生理生态指标的影响  

Effect of Cu,As and their combination pollution on eco-physio logical index of wheat

作　　者：王友保[1] 刘登义[1] 

机构地区：[1]安徽师范大学生命科学学院,芜湖241000

出　　处：《应用生态学报》2001年第5期773-776,共4页Chinese Journal of Applied Ecology

基　　金：教育部留学回国人员基金;安徽师范大学青年基金资助项目(2 0 0 0QL37)

摘　　要：通过盆栽实验研究了Cu、As及其复合处理对小麦生理生态指标的影响 .结果表明 ,少量低浓度的Cu(5 0 0mg·kg-1)、As(5mg·kg-1)对植物的生长无明显毒害作用 ,但随着其浓度的增加 (Cu :10 0 0～ 40 0 0mg·kg-1,As :15～ 60mg·kg-1)则显示出一定的负效应 ,表现为小麦POD活性增加 ,叶片电导率增大 ,色素含量降低 ,根尖细胞有丝分裂指数下降 ,小麦生物量降低 ;而两者的复合处理则存在一定拮抗作用 .此外 ,研究还表明 ,小麦生物量与As浓度的相关性大于Cu .Based on the pot experiments,effects of Cu,As and their combination pollution on eco physiological index of the wheat were studied in this paper.The results showed that the low concentration of Cu (500mg·kg -1 ),As (5mg·kg -1 ) had no obvious effects on wheat.But as the concentration of Cu and As (Cu 1000～4000mg ·kg -1 ,As 15～60mg·kg -1 ) increased,there existed obvious negative e ffects such as the POD activity and conductivity of wheat leaves increased,mitos is index and contents of chlorophyll decreased.There also existed antagonism bet ween Cu and As in the combination pollution.It was also found that the effect of As on wheat is heavier than the effect of Cu from the experiment.

关 键 词：CU AS 小麦 生理生态指标 铜 砷 复合污染 POD活性 毒性 

分 类 号：X171.5[环境科学与工程—环境科学]