甜菜夜蛾·桃蚜的药效试验研究

2004～2006年进行田间12种药剂防治甜菜夜蛾、桃蚜的药效试验和室内毒力及生物活性测定。结果表明,在供试的防治甜菜夜蛾幼虫7种药剂中以溴虫腈的防效最高,药后5、7、14 d的防效分别为96.2%、99.1%、96.5%;氟铃脲和氟虫腈次之,药后5～14 d防效稳定在90%以上;高效氯氟氰菊酯和辛硫磷乳油再次之;阿维菌素、米满防效最低。在供试的防治桃蚜的6种药剂中以啶虫脒和吡虫啉防效较好,药后5～14 d校正防效均在90%以上;三氟氯氰菊酯、辛硫磷防效较低,在生产上应逐步减少使用。

Study on Control of Laphygma exigua and Myzus persicae

The medicine effect experiment in field and the virulence and biology activity determination in lab with 12 kinds of insecticides used in common in 2004～2006 showed that among tested 7 insecticides against Laphygma exigua,chlorfenapyr had best control effect with its control effectiveness of 96.2 %,99.1 %,96.5 % resp.after applying for 5,7 and 14 days.Hexaflumuron and fipronil were second with their control effectiveness stable above 90 % after applying for 5～14 days.Lambda-cyhalothrin and phoxim were third and Avermectin,tebufenozide'were lowest on the control effectiveness.Among tested 6 insecticides against Myzus persicae,acetaniprid and imidacloprid had better control effects,with their corrected control effectiveness above 90 % after applying for 5～14 days.Cyhalothrin,phoxim' had lowest control effectiveness from 76.8 % to 82.6 %,which should be reduced in the production.