小线角木蠹蛾初孵幼虫在毛白蜡上的空间分布型  

The spatial distribution pattern of the newly hatched larvae of Streltzoviella insularis on Fraxinus pennsylvanica

作　　者：王勇 信晓萌 张殿福 马玉龙 董子钢 孙春凯 WANG Yong;XIN Xiaomeng;ZHANG Dianfu;MA Yulong;DONG Zigang;SUN Chunkai(Shouguang Forestry Development Center,Shouguang 262700,China;Weifang Forestry Development Center,Weifang 261041,China;Shouguang state-owned Mechanical Forest Farm of Shandong Province,Shouguang 262716,China)

机构地区：[1]寿光市林业发展中心,山东寿光262700 [2]潍坊市林业发展中心,山东潍坊261041 [3]寿光市国有机械林场,山东寿光262716

出　　处：《中国森林病虫》2023年第1期34-39,共6页Forest Pest and Disease

摘　　要：小线角木蠹蛾Streltzoviella insularis是毛白蜡Fraxinus pennsylvanica的主要蛀干害虫。为精准测报和有效防治,选取10块具有代表性的样地,采用逐株调查法统计每株毛白蜡上初孵幼虫的排粪堆数量;利用9个聚集度指标和5个回归模型,对小线角木蠹蛾初孵幼虫在毛白蜡上的空间分布型进行测定。结果表明:小线角木蠹蛾初孵幼虫在毛白蜡上呈聚集分布,个体间相互吸引,分布的个体成分是个体群,其分布与密度有关,密度越大聚集程度越强,聚集原因是由环境因素引起的。确定了最适抽样公式,并进行了序贯分析。Streltzoviella insularis is the most important stem borer of Fraxinus pennsylvanica. In order to study the spatial distribution pattern of S. insularis on F. pennsylvanica and further provide theoretical basis for accurate prediction and effective control, ten representative plots were selected, and the number of excrement piles of newly hatched larvae on each plant was counted by means of plant by plant investigation. The spatial distribution pattern of the newly hatched larvae of S. insularis was determined by using nine aggregation indices and five regression models. The results indicated that S. insularis larvae on F. pennsylvanica showed aggregation distribution, and the individuals attracted each other. The basic unit of the distribution was individual groups, and the distribution was correlated with density. The larger the density, the higher the aggregating degree. The aggregation was caused by environmental factors.Finally, the optimum sampling formula was determined and the sequential sampling analysis was applied.

关 键 词：小线角木蠹蛾 毛白蜡 空间分布型 

分 类 号：S763.42[农业科学—森林保护学]