【摘要】 对云斑白条天牛Batocera lineolata Chevrolat在贵州山地条件下杨树人工林中的产卵危害部位及不同因素对其发生危害的影响进行调查。结果表明:云斑白条天牛主要在树干2 m以下产卵危害,占调查总数91.79%;杨树品种、树龄、树高、胸径、林分类型,成虫食物源等因素一定程度影响其发生危害。三倍体毛白杨、响叶杨是抗云斑白条天牛品种;杨树有虫株率随树龄增加呈先升后降趋势,5~15 a生杨树受害比较严重;杨树受害率随树高增加也呈先升后降趋势,在树高8~14 m时达到高点;杨树受害率在胸径5~11 cm时达到高点后,随着胸径增大逐渐下降;混交林较纯林受害轻;成虫食物源丰富度越高,杨树受害越重。更多还原

【Abstract】 Oviposition sites of Batocera lineolata Chevrolat on poplars and influence of different factors on its harm were investigated in the poplar plantation in Guizhou mountain area. The results indicated that 91. 79% of the beetle laid eggs on the trunk below2 meters. Factors such as poplar varieties,tree ages,height,DBH,stand types and food source of B. lineolata adult had certainly impacts on the damage to poplar. Triploid Chinese white poplar and Populus adenopoda were resistant to B. lineolata. The attacking rate increased first and decreased afterwards with the increase of tree ages,5-15 years old poplars were more seriously damaged. Injury rate also increased first and decreased afterwards with the increase in tree height,and reached top at the height of 8-14 meters. Injury rate reached top at DBH of5-11 centimeters,and decreased afterwards with the increase of DBH. M ixed forest was less damaged by B. lineolata than the pure forest. The more abundant the food source,the more serious the damage to poplars was.更多还原