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

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.