日本栎类树种枯死原因及防治研究

摘要

阐述了沿日本海一侧的日本各地发生的较大规模的被称为“第 2 松材线虫病”的栎类树木枯死的灾害症状、原因及其防治。当前研究结果认为，引起栎类树木死亡的直接原因是一种目前尚未正式定名的有害菌，文中被称为“栎树菌”，这种有害菌通过栎长小蠹进行传播的。由于该虫易侵入生长势相对较弱的栎类立木，通常危害木的树龄在 20 年以上，且以 40～50 年居多，通过钻孔注入适量的NCS（威百亩）等药剂后；用胶贴纸带包裹，可起到防治和杀灭栎长小蠹及“栎树菌”的目的。%This paper introuduced the symptom of death of oak along Japanese Sea, causes and prevention and cure measures.Present research thinks that its death is directly caused by a fungus ,which is called oak fungus. This fungus is spread by Platypus quercivorus and easily infests the oak which grow relatively weak. Platypus quercivorus and oak fungus can be controlled by injuction of NCS into holes opened in oak.