50%虎蛙等几种杀虫剂对稻纵卷叶螟的防治效果  

Efficacy of Trichlorfon Plus Fipronil 50% EC and Several Other Insecticides Against Cnaphalocrocis medinalis

作　　者：赵阳 成晓松 韩伟斌 陈洪新 王太高 成长庚 

机构地区：[1]江苏省盐城市植保站,盐城224002 [2]盐都县病虫测报站,盐都224001 [3]响水县植保站,响水224600 [4]盐都县郭猛镇农技站,郭猛224014

出　　处：《农药》2005年第2期79-80,共2页Agrochemicals

摘　　要：田间试验示范结果表明:虎蛙EC对稻纵卷叶螟有良好的防治效果。2龄幼虫高峰期用80ml/667m2,药后3、7d杀虫效果分别为90.2%和94.1%,保叶效果分别为82.0%和87.7%,优于30%螟服EC70ml/667m2和40%三唑磷EC80ml/667m2。3龄幼虫高峰期用100ml/667m2,药后4、6d杀虫效果仍达80.1%以上。Trichlorfon plus fipronil 50% EC provided excellent control of Cnaphalocrocis medinalis in field demonstra- tion trials. When applied at 1200 ml/ha during peak activity of 2-instar larvae, trichlorfon plus fipronil provided 90.2% and 94.1% insect control 3 and 7 d after application, respectively, while leaf protection efficacy was 82.0% and 87.7%, respectively. These results were better than those provided by chlorpyrifos plus triazophos 30% EC at 1050 ml/ha and by triazophos 40% EC at 1200 ml/ha. trichlorfon plus fipronil at 1500 ml/ha during peak activity of 3-instar larvae provided >80.1% insect control 4 and 6 d after treatment.

关 键 词：虎蛙 敌百虫·氟虫腈 杀虫剂 稻纵卷叶螟 防治效果 

分 类 号：S435.112[农业科学—农业昆虫与害虫防治]