However, Cd and DEHP had an antagonistic effect on the inhibition of root elongation which could decline slightly the toxicity effect of Cd on root elongation.

• Cd与DEHP单一或复合污染会抑制根伸长和影响幼苗过氧化氢酶（CAT）活性，但一定浓度的DEHP可以缓解Cd对菜心根伸长的抑制作用。