马尾松天然林中松墨天牛等昆虫种群动态初探

Population Dynamics of Monochamus alternatus and Other Insects in Masson Pine Natural Forest

通过在马尾松天然林中挂设诱捕器,利用A-3型化学诱剂诱获的昆虫种类达16种,其中天牛7种。松林的主要蛀干害虫达6种,以松墨天牛、椎天牛种群数量比率最高,分别达到77.18%和16.11%。监测发现,松墨天牛在江西省峡江县成虫羽化期为5月上旬至8月上旬,初期为5月上旬,盛期为6月中下旬,末期为8月上旬,并且雌成虫发生量大于雄成虫。椎天牛出现初始期在5月上旬,仅在5月下旬出现了高峰期。试验表明,A-3型化学诱剂诱捕是监测松墨天牛种群动态和降低其虫口密度的有效方法。

Through hanging traps withA-3 type chemical attractant in massonpine natural forest, sixteen species of in-sects were trapped, and seven of thosespecies were longicom beetles. Therewere six main stem borers of pineforests, with which the rate ofMonochamus altematus was highest（77.18%） and the rate of Spondylisbuprestoides was second （16.11%）. Ac-cording to the monitor, the M. alternatusaduh emerged from the early May to theearly August, and the occurrence quanti-ty of female adults was more than themale adults. S. buprestoides began to ap-pear in the early May, and the maximumoccurrence was in the late May. The re-sults showed that the traps with A-3 typechemical attractant was an effectivemethod to monitor the population dy-namics and reduce the population densi-ty of M. alternatus.