【摘要】 对两年纯林和混交林中诱木进行解剖研究。结果表明,不管是纯林还是混交林,松墨天牛种群数量为黑松>马尾松>湿地松;林分对松墨天牛种群影响不显著。松墨天牛天敌花绒坚甲数量,纯林中马尾松>黑松>湿地松;混交林中黑松>马尾松>湿地松。不管是纯林还是混交林,松墨天牛的白僵菌自然寄生率都极低,为0%~4.35%,且不同林分不同树种松墨天牛的白僵菌自然寄生率之间差异不显著。更多还原

【Abstract】 The dissection results of induced pine in both pure and mixed forest are as follows.The order of population quantities of Monochamus alternatus from more to little was Pinus thunbergii,P.massoniana,P.elliotii in both forest;The impact of stand types on the population quantities of Monochamus alternatus was not significant.The number of natural enemies Dastarcus helophoroides of Monochamus alternatus from more to little was P.massoniana,P.thunbergii,P.elliotii in pure forest,while the order from more to little was P.thunbergii,P.massoniana,P.elliotii in mixed forest.The parasitical ratio of Beauveria bassiana in Monochamus alternatus were extremly low between 0%~4.35% in both forest and its differences in different stand types and varieties of pine are not significant.更多还原