三种杀虫剂对橄榄星室木虱的控制作用

应用生命表方法分析吡虫啉、木虱净、稻虱净3种化学农药对橄榄星室木虱的控制效果。结果表明：吡虫啉、木虱净、稻虱净和对照的种群趋势指数分别为0．4148，0．8328，4．9908，6．3925。说明吡虫啉和木虱净处理区的橄榄星室木虱种群数量呈下降趋势，稻虱净和对照区的橄榄星室木虱种群数量以4．9908和6．3925倍的速度增长；吡虫啉、木虱净和稻虱净的干扰作用控制指数分别为0．0649，0．1303和0．7807。表明吡虫啉和木虱净施用区种群数量相当于对照区的6．49％和13．03％，取得了很好的防治效果；稻虱净施用区种群数量是对照的78．07％，不是防治橄榄星室木虱的理想药剂。

Control effects of three insecticides on Pseudophacopteron canarium

Control effects of imidacloprid,beta-cypermethrin and buprofezin on Pseudophacopteron canarium were analyzed by the method of life table.The results showed that population trend indexes(I) of imidacloprid,beta-cypermethrin,buprofezin and the control were 0.414 8,0.832 8,4.990 8 and 6.392 5 respectively,which indicated the population of Pseudophacopteron canarium declined in the plots treated by imidacloprid and beta-cypermethrin,but that in the plots treated by buprofezin and the control rose by 4.990 8 and 6.392 5 times respectively.The interference index of population control(IIPC) of imidacloprid,beta-cypermethrin and buprofezin were 0.064 9,0.130 3 and 0.780 7 respectively,which indicated that the population in the plots treated by imidacloprid and beta-cypermethrin were only 6.49% and 13.03% of that in the control plots,so the control effects were good;population in the plots treated by buprofezin was 78.07% of that in the control plots,so its control effect was not ideal.