呋虫胺和哌虫啶对哈密瓜烟粉虱的防治效果

Control Effects of Insecticide Dinotefuran and Piperidine against Bemisia tabaci in Hami Melon

为筛选出防治烟粉虱的新型杀虫剂,以烟粉虱为防治对象,以倍内威为对照,测定新型杀虫剂呋虫胺和哌虫啶对烟粉虱的田间防治效果,以筛选适宜的药剂及其有效浓度。结果表明:3种杀虫剂中,呋虫胺1500倍液对烟粉虱防治效果最好,具有速效、持效期长、防效稳定等特点;其次是倍内威1000倍液,整个防治过程中其对烟粉虱的相对防效都在80%以上,效果较好;哌虫啶1000倍液、1500倍液、2000倍液防治烟粉虱效果较差。在防治药剂选择上,可以采取倍内威和呋虫胺交替使用,防止倍内威加速抗药性的产生;哌虫啶不建议生产上作为防治烟粉虱的药剂。

In order to screen a new insecticide for the control of Bemisia tabaci,field efficacy trials were carried out to determine the efficacy of dinotefuran and piperidine against Bemisia tabaci and screen the appropriate insecticides and their effective concentrations,taking benevir as control.The results showed that among the three insecticides,the 1500 times of dinotefuran had best control effect on Bemisia tabaci,which had the characteristics of quick effect,holding efficiency,long duration and stability.The second was 1500 times of benevir,whose prevention effect was more than 80%in the whole treatment process,and it had good control effect on Bemisia tabaci.The efficacy of 1000 times,1500 times and 2000 times of piperidine against Bemisia tabaci were poor.In the selection of control insecticides,benevir and furosemide could be used alternately to prevent benevir from accelerating the development of drug resistance.Piperidine was not recommended to be used as a drug for the control of Bemisia tabaci.