塞罕坝地区落叶松八齿小蠹生物学特性及防治技术的研究

为有效防治落叶松八齿小蠹，对其生物学特性、发生规律、防治技术进行了研究。通过饲养与野外调查发现，落叶松八齿小蠹在塞罕坝1a发生1～2代，2～3次扬飞，发生数量与温度、地形、天敌等因素有密切关系。用8％的绿色威雷200～400倍液于扬飞前2～3d防治，同时采取必要的营林措施，连续2～3a可将该虫控制在“有虫不成灾”的水平。

STUDIES ON THE BIOLOGICAL FEATURES AND CONTROL TECHNIQUES OF Ips subelongatus IN SAIHANBA REGION

In order to better control Ips subelongatus , its biological features, pattern of outbreak and control techniques are studied. Indoor feeding and field observation showed that Ips subelongatus has 1 or 2 generations yearly in Saihanba, and has 2 or 3 imago's disservice. The numbers of Ips subelongatus is affected by temperature, landform and natural enemies etc. 2 or 3 days before Ips subelongatus imago's disservice, the treatment with 8% luseweilei diluted to 200 - 400 times together with necessary measures of forest cultivation could bring the pest under control for as long as 2 - 3 years.