应用二化螟性诱剂大面积诱捕越冬代雄蛾

应用二化螟性诱剂对越冬代二化螟雄蛾进行了大面积诱捕。结果表明：诱杀７ｄ和１５ｄ后，诱捕区（包括中心区和边缘带）雄蛾量分别为对照区的４０.４４％和２９.７８％，其中心区的蛾量分别为边缘带的４８.５５％和２４.６５％；诱捕区卵块数仅为对照区的２０.０％～３３.３％，枯鞘率仅为对照区的１２.５％～２５.０％；诱捕区的第一代雄蛾发生量大量减少，诱蛾量仅为对照区的４６.９６％，其中心区的雄蛾量为边缘带的６７.６４％；诱捕区的水稻枯心率仅为对照区的３９.５０％～４４.７５％。应用性诱剂大面积诱捕是防治水稻二化螟的有效方法之一。

Large scale trapping the male moth of overwinter generation of stalk borer Chiol suppressalis Walker by sex pheromones.

The male moth of overwinter generation of rice stalk borer Chilo suppressalis Walker was trapped by sex pheromones on a large scale. Seven and fifteen days affer application, the results for the two dates showed that the moth numbers in trapping areas were 4044% and 2978% of that in control areas, and in treatment areas, the moth numbers in centre parts were 4855% and 2465% of that in edge belts, respectively. The egg mass numbers and the wilt sheath shoot rates in treatment areas were 200%-333% and 125%-250% of that in control areas, respectively. The proportions of wilt heart shoot in trapping areas were 3950%-4475% of that in the control areas.