红脂大小蠹诱捕效果影响因素分析

Influencing Factors of the Effect of Trapping Dendroctonus valens LeConte

采用在红松纯林不同位置放置诱捕器的方法,分析了影响红脂大小蠹诱捕的因素。结果表明:距林缘距离越大,诱捕效果越差;对于林内、林外和林缘来说,林缘诱捕效果最好;随着郁闭度的增大,诱捕数量减少。因此,在用诱捕器防治红脂大小蠹时,应将诱捕器放置在林缘或者郁闭度较小的地方。

The influencing factors of trapping Dendroctonus valens LeConte have been analyzed by use of placing the traps in different positions in Pinus koraiensis pure forest. The results showed that with increase in distance from the forest edge, the trapping effect became worse. For inside forest, outside forest and forest edge, the trapping effect in forest edge was the best. With the inetreasing of canopy density, the trapping quantity decreased. The traps should be placed in forest edge or the place with small canopy density for controlling Dendroctonus valens LeConte by use of traps.