摘要
松黑木吉丁Melanophila acuminataDeGeer是危害油松的弱寄生性昆虫,平时在寄主的枯弱枝上栖息、生活和繁衍后代,不造成灾害。一旦寄主树势衰弱,它就转移到主干危害,导致其死亡。因此,大量树势衰弱的油松是松黑木吉丁成灾的温床;该虫在树干南面的羽化孔比北面多,并且羽化孔数量随树干直径的变细而减少;根系环剥、断根、嫁接等复壮处理技术是减少和预防松黑木吉丁危害的有效措施,长尾刻柄茧蜂是控制该害虫的有效天敌。文章介绍了一套较为有效的综合防治措施。
Melanophila acuminata DeGeer was a weak parasite in Pinus tabulaeformis. Ugually it lived and propagated in the dry and weak branches of the host and didn＇t cause the disaster. Once the vigor of the host tree was weakened, it moved to attack its trunk and cause the death. So the massive weak pines were hotbed of disasters caused by Melanophila acuminata. There were more emergence holes in the south side of the trunk than those in the north side and the quantity of emergence holes reduce with the decrease of the trunk diameter. Rejuvenation techniques such as root girdling, root pruning and grafting were effective in the reduction and prevention of the damage. Atanycolus initiator Fabricius was its natural enemy. A series of effective control measures were introduced.
出处
《中国森林病虫》
北大核心
2009年第5期27-30,共4页
Forest Pest and Disease
基金
北京市园林局科技项目(2004-01)
关键词
松黑木吉丁
油松
弱寄生
复壮
成灾
综合防治
Melanophila acuminata
Pinus tabulaeformis
weak parasite
rejuvenation
disaster
integrated control
