Control Effect of Different Insecticides on Thysanogyna limbata with Root Pouring
In order to expore the effect of different insecticides on Thysanogyna limbata with root pouring,we took the afforestation trees (Firmiana platanifolia) in Beijing Zoo as the research object,and the control effects of imidacloprid,acetamiprid,abamectin,thiamethoxam and aldicarb on the aphid population reduction rate at 1,3,5,10,15 and 25 d after treatment were compared respectively. The results showed that in the test dose of imidacloprid and aldicarb,the control effect of more than 50% could be achieved in 3 d after dosing,the best effect was achieved in 5 d after dosing,and the best effect could still be maintained above 80% in 25 d after dosing,which showed the quick-acting and long-lasting efficacy of insecticides,and comprehensive control effect was the best. It is recommended to use imidacloprid and enidiamide alternately.