POD activity rises on the average, and the range of increase in Fipronil treatment and Abamectin treatment is a little high, reaching 598% and 247% respectively.

• 施药后白菜叶片POD活性总体呈上升趋势，其中以锐劲特处理和阿维菌素处理增幅较大，分别达598%25和247%25。