橡胶树衰退与小蠹虫危害的关系

The Relations between the Tree Decline and the Rubber Black Bar Beetle

为害橡胶树的小囊虫种类增加,已由偶发性转变为常发性,导致橡胶树死亡,给生产造成巨大损失。本文借鉴防治云南松纵坑切梢小蠹(Tomicus piniperda L.)的经验教训,强调小蠹虫是一类“次期性”蛀干害虫,只有当橡胶树处于衰退状态才可能侵入为害。根据橡胶树既具有林木的共性又独具热带乔木作物的特殊性,运用森林衰退病理论,结合橡胶生产实际分析认为:橡胶树遭受风、雷、寒、病等灾害造成损伤、树皮溃烂、干枯是橡胶树小蠹虫危害的重要原因;橡胶树衰退则是小蠹虫危害的根本原因。

The pest becomes frequent as the kinds of rubber black bar beetles increase .It leads the huge loss because of rubber tree death. The beetle is secondary pest. It can invade the tree as the tree declines. It is deemed that the important cause to hurt is the dry rot and traumas by wind, thunder, cold and disease, but the root cause is the rubber tree decline, according to the particularity of tropical arbor and the commonness of forest, the forest decline theory, rubber production.