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当前位置: 首页 > 文章 > 不同龄期大黑鳃金龟幼虫对两种剂型杀虫剂的敏感性测定 北方园艺 2013 (11) 113-115
Position: Home > Articles > 不同龄期大黑鳃金龟幼虫对两种剂型杀虫剂的敏感性测定 Northern Horticulture 2013 (11) 113-115

不同龄期大黑鳃金龟幼虫对两种剂型杀虫剂的敏感性测定

作  者：
刘艳涛;席国成;冯晓洁;张平;刘春琴;王庆雷
单  位：
河北省沧州市农林科学院;沧州职业技术学院
关键词：
杀虫剂;大黑鳃金龟;幼虫;毒力
摘  要：
在大黑鳃金龟成虫及幼虫室内饲养方法的基础上,采用土壤混药法,将杀虫剂毒死蜱乳油、辛硫磷乳油、毒死蜱微胶囊、辛硫磷微胶囊按照制剂浓度配制成不同浓度的梯度,测定其对1、2、3龄大黑鳃金龟幼虫的室内毒力.结果表明:相同龄期、相同浓度梯度下乳油杀虫效果均好于微胶囊;3龄幼虫室内毒力测定时乳油的5d死亡率显著高于10d死亡率,微胶囊10d死亡率略高于5d的死亡率;相同浓度时1龄幼虫的死亡率均高于2、3龄幼虫的死亡率.
单  位：
Cangzhou Vocational College of Technology,Cangzhou,Hebei 061001%Cangzhou Academy of Agriculture and Forestry Sciences,Cangzhou,Hebei 061001
关键词：
insecticide%Holotrichia oblita%larva%toxicity
摘  要：
Based on the indoor rearing methods both of the Holotrichia oblita adults and larvaes,taking the soil mix with drugs,and the insecticides including chlorpyrifos,phoxim,chlorpyrifos microcapsule,phoxim microcapsule were prepared into a series concentration gradient according the concentration formulation,then the indoor toxicity of the Holotrichia oblita larvas at first instar,second instar and third instar were measured.The results showed that the missible oil was more efficiency than the corresponding microcaspules to the same instar at the same concentration gradient.The test of indoor virulence showed that the death rate of third instar larvae which disposed by emulsifiable for 5 days was significantly higher than the 10 days,while the 10 days' mortality was higher than the 5 days' when disposed by microcaspule.The mortality of the first instar larva was always higher than the second and third instar,so long as the concentrations were in the same level.

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