摘要
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1 a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2～3 d防治,同时采取必要的营林措施,连续2～3 a可将该虫控制在'有虫不成灾'的水平.
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.
出处
《河北林果研究》
2004年第4期362-366,共5页
Hebei Journal of Forestry and Orchard Research
关键词
生物学特性
发生规律
防治技术
落叶松八齿小蠹
biological characteristic
outbreak pattern
control technique
Ips subelongatus Motschulsky
