5种杀虫剂对枣尺蠖的防效研究

5种杀虫剂对枣尺蠖幼虫的防效研究结果表明,室内毒力试验以25%灭幼脲3号悬浮剂对枣尺蠖的防效最好,为95.92%,4.5%高效氯氰菊酯乳油防效最差,为83.67%,其他3种药剂防效均较好,差异不大;田间防效试验,药后15 d,防效最好的是25%灭幼脲3号悬浮剂和2.5%多杀霉素悬浮剂,效果分别为91.47%和88.46%,其次为10%虫螨腈悬浮剂和5%氟啶脲浮油,防效分别为83.53%和80.38%,4.5%高效氯氰菊酯乳油最低,为53.12%。利用25%灭幼脲3号悬浮剂、2.5%多杀霉素悬浮剂、10%虫螨腈悬浮剂、5%氟啶脲乳油4种杀虫剂防治枣尺蠖均有较好效果,可以在田间推广使用。

Study on Control Efficacy of 5 Kinds of Insecticides on Sucra jujuba

Control efficacy of five insecticides on larvae of Sucra jujuba showed that,in the indoor toxicity experiment,25% diflubenzuron NO.3 SC was the most efficacious,the control efficacy were 95.92%,4.5% beta-cypermethrin EC were weak,the control efficacy were 83.67%,the control efficacy of the other 3 kinds of agent all were good,there were little difference.In the field control efficacy experiment,25% diflubenzuron NO.3 SC and 2.5% spinosad SC were the most efficacious after 15 days applied agents,the control efficacy were 91.47% and 88.46%,followed by 10% chlorfenapyr SC and 5 % chlorfluazuron EC,the control efficacy were 83.53%和80.38%,4.5% beta-cypermethrin EC was weak,the control efficacy was 53.12%.The four insecticides(25% diflubenzuron NO.3 SC,2.5% spinosad SC,10% chlorfenapyr SC,5% chlorfluazuron EC) could provide good control efficacy,and could be utilized on a wide scale in field.