松墨天牛取食为害与松树枯死关系的研究

笔者通过室内外饲养观察,初步掌握了松墨天牛成、幼虫的取食习性;阐明了松墨天牛成虫取食与松树生理衰弱、幼虫钻蛀与松树枯死之间的关系;同时还研究了松墨天牛幼虫与其它蛀干害虫之间的关系;对成虫产卵习性和幼虫种群分布规律也进行了探讨。笔者认为,松墨天牛成、幼虫取食是造成我国松树枯死的主要原因之一。为防止松树的大面积死亡,必须密切注意松墨天牛成虫种群数量的增长。

A STUDY ON RELATIONSHIP BETWEEN THE DAMAGE OF PINE SAWYER BEETLE (MONOCHAMUS ALTERNATUS) AND PINE DYING

The pine sawyer beetle, Monochamus alternatus Hope, is not only a main vector of Bursaphelenchus xylophilus, but also an important stemboring pest of pines in our country. The feeding habit of the adults and larvae was clarified preliminarily by observations both in laboratory and in the field, and the relationship was expounded between the adult damage and physiological weakness of pine, the larvae boring and pine dying. The relationship between the larvae and other stem-boring pests was also studied at the same time. The egg-depositing habit of the adult and the pattern of population distribution of the larvae were discussed. The authors Consider that the adult and larvae feeding are may be the most important factors among the causes inducing pine dying in our country. In order to prevent pine trees from dying in vast area, the numeral increase of the species group of pine sawyer beetle adult attention be the most important factors paid must to.