沙地云杉球果害虫在树冠上的发生规律研究  

Occurrence Regularity of Cone Insects in Crown of Picea mongolica

作　　者：宋大北 王艳军 陈国发[3] 高永亮 周效明 白永安 李方奇 

机构地区：[1]内蒙古克什克腾旗林业局,内蒙古经棚025350 [2]内蒙古白音敖包国家级自然保护区管理局,内蒙古白音敖包025350 [3]国家林业局森林病虫害防治总站,辽宁沈阳110034

出　　处：《内蒙古林业科技》2015年第4期32-34,50,共4页Journal of Inner Mongolia Forestry Science and Technology

摘　　要：对沙地云杉球果及其害虫在树冠上发生规律的研究结果表明:树冠南侧和北侧的上、中层球果较多,而下层球果较少;云杉球果小卷蛾对树冠南侧下层的球果危害较重,果梢斑螟对树冠北侧的球果危害较重;云杉球果小卷蛾对树冠南侧和北侧球果的平均危害率为16.53%;果梢斑螟的平均危害率为12.67%。总体来看,球果小卷蛾对沙地云杉球果的危害要重于果梢斑螟,两种害虫对北侧树冠球果的危害重于南侧。The results of study on occurrence regularity of the cones and insects in the crown of Picea mongolica showed that there were more cones in upper and middle levels of the southern and northern crowns, and less cones in the underlying levels. Cydia strobilella do serious harm to the cones in underlying level of the southern crowns, Dioryctria pryeri do serious harm to the cones of the southern crowns. The average damage rate of Cydia strobilella to the cones of the southern al, Cydia strobilella damage and northern crowns is 16. 53%, and the one of Dioryctria pryeri is 12. 67%. In genermore seriously the cones of Picea mongolica than Dioryctria pryeri, both Cydia strobilella and Dioryctria pryeri damage the cones in the southern crowfis more seriously than the ones in the northern crowns.

关 键 词：沙地云杉 球果害虫 云杉球果小卷蛾 果梢斑螟 发生规律 

分 类 号：S763.38[农业科学—森林保护学]