不同性比对小菜蛾繁殖及田间种群数量的影响  

Effect of different sex ratio on propagate of Plutella xylostella

作　　者：宫亚军[1] 路虹[1] 石宝才[1] 姚金亮 康总江[1] 

机构地区：[1]北京市农林科学院植物保护环境保护研究所,北京100097 [2]北京市延庆县植保站,北京102100

出　　处：《昆虫知识》2010年第1期63-66,共4页Entomological Knowledge

基　　金：北京市农委试验示范项目资助;科技部973计划(2009CB119004-09)

摘　　要：不同雌雄比对小菜蛾Plutella xylostella(L.)繁殖的影响以及性诱剂对田间种群的控制效果研究试验结果表明:随雌雄比的提高,雌蛾的产卵量减少,孵化率降低,在1∶1,4∶1状态下平均单雌产卵量分别为79.33粒和76.03粒,平均孵化率为89.03%和78.44%,在13∶1状态下平均单雌产卵量为36粒,平均孵化率仅为46.05%,全雌状态下所产的卵无一孵化。田间应用性诱剂也可有效降低虫口数量。The study on effect of sex ratio on propagate and control of sex pheromone on population of Plutella xylostella （L.） in field showed that higher the sex ratio （female to male） may lead to lower number of eggs laid,and lower hatchability of eggs. Under 1：1 and 4∶1 of female to male,the average eggs each female were 79.33 and 76.03,respectively,and the hatchability of eggs was 89.03% and 78.44%,respectively. Under 13∶1,the average eggs each female were 36,and the hatchability was 46.05%. When all was female,no eggs could hatch. Application of sex pheromone traps in cabbage field may decrease population density.

关 键 词：小菜蛾 性比 性诱剂 控制效果 

分 类 号：S433[农业科学—农业昆虫与害虫防治]