| Abstract: In order to screen out the quick-acting, safely and low toxic insecticides against Bemisia tabaci of tomato, the field experiment was conducted by individual spraying with 5 insecticides in the early period of Bemisia tabaci occurrence, and the control efficiency datas were collected at 1 day, 3 days and 7 days post application respectively. The results showed that 17% flupyradifurone solvable agent (AS) was more effective on Bemisia tabaci, and the control efficiency was 67.1% and 90.0% at 1 day and 7 days post application individually. The 25% thiamethoxam water dispersible granule (WDG) had good quick-acting effect, and the control efficiency was 61.5% and 80.0% at 1 day and 3 days post application individually. In addition, 10% cyantraniliprole suspending agent (AS) had high persistent effect, and the control efficiency was 76.4% and 70.3% at 3 days and 7 days post application respectively. In the production, it was suggested that 17% flupirofuranone AS should be used preferentially to control Bemisia tabaci , and 25% buprofezin WDG and 10% cypermethrin AS should be used alternately to avoid the emergence of insecticide resistance. |