摘要
二球悬铃木Platanus acerifolia是中国从北到南广泛种植的城市园林行道树种。近年来,在昆明市发现小圆胸小蠹Euwallacea fornicatus危害二球悬铃木后,又发现一种食菌小蠹,经鉴定命名为悬铃木足距小蠹Xylosandrus sp.。该小蠹蛀害健康的悬铃木和川梨Pyrus pashia幼枝,导致枝梢枯死。通过比较4种类型悬铃木枝条的有虫率及平均虫量,明确新鲜有孔和干枯有孔枝条是研究足距小蠹生活史及种群动态的合适枝条类型;7—9月是调查其危害的适宜季节,可以通过乙醇诱集配合受害枝条解剖监测其种群动态。尽早发现枝条受害并及时剪除是目前最直接有效的控制办法。该虫在我国悬铃木分布区扩散蔓延的潜在风险极高,应引起各地园林植保工作者高度重视。
Platanus acerifolia is a common Platanus acerifolia urban street tree,widely planted in China from the north to the south. For the past few years,after finding P. acerifolia in Kuming city that were seriously attacked by Euwallacea fornicatus,a new ambrosia beetle had been found,and identified as Xylosandrus sp.. It fed on fresh shoots and young branches of Platanus spp. and Pyrus pashia,and caused the death of shoots and branches. By comparing four different types of Platanus spp. shoots and branches based on the percentage of having pests and the average amount of pests on branches and shoots, the suitable types of Platanus spp. branches and shoots were those with holes for both fresh wounded shoots and dead shoots for investigating life cycle and population dynamics of the beetle; the suitable period for the investigation of this beetle was between July and September. Population monitoring could be done by combined trapping with ethanol lures and cutting the infected shoots. Finding the wounded shoots and branches as early as possible and cutting off them in time was the most effective way to control this beetle. Xylosandrus sp. was highly possible to spread to each area with Platanus spp. in China,and should be treated as a potential and dangerous pest for garden plant workers.
作者
杨翰
吴俊
韩开健
郭宏伟
李巧
刘波
YANG Han, et al.(Key Laboratory of Forest Disaster Warning and Control in Yunnan Province, Southwest Forestry University, Kunming 650224, Chin)
出处
《中国森林病虫》
2018年第2期39-42,共4页
Forest Pest and Disease
基金
昆明市五华区科技计划项目"五华主城区主要园林害虫监测及生态控制技术"
国家林业局"中越边境地区森林入侵害虫物种联合调查"项目
西南林业大学园林植物保护学科共同资助
关键词
食菌小蠹
危害特点
种群监测
悬铃木
ambrosia beetle
damage feature
population monitoring
Platanus spp.
