核桃树枣大球蚧空间分布型的研究  

Spatial Distribution of Eulecanium gigantea Occurring in Walnut Tree

作　　者：王玉兰[1] 刘爱华[1] 张静文[1] 赵边建 岳朝阳[1] 张新平[1] 唐丽[1] 

机构地区：[1]新疆林业科学院森林生态研究所,新疆乌鲁木齐830002 [2]新疆林业厅天保办,新疆乌鲁木齐830000

出　　处：《西北林学院学报》2012年第4期168-171,共4页Journal of Northwest Forestry University

基　　金：新疆维吾尔自治区党委农办项目:南疆林果无公害生产控制过程中重大生物灾害防控新技术推广与示范;公益性行业(农业)科研专项项目(201103024)

摘　　要：采用多个聚集度指标和回归分析法对枣大球蚧的空间分布格局进行研究,结果显示:各聚集度指标均表明,枣大球蚧越冬若虫和初孵若虫在核桃树的空间分布格局为聚集分布;Taylor幂法则、Iwao的回归分析法也表明,枣大球蚧越冬若虫和初孵若虫在核桃树上呈聚集分布。聚集度随虫口密度增大而减小;聚集原因与枣大球蚧本身的生活习性有关。The spatial distribution patterns of Eulecanium gigantea occurring in walnut trees were studied by using several aggregation indices and regression analysis. The results showed that the spatial distribu- tion patterns of nymphs in overwintering and newly hatched periods were aggregative. Regression analysis of Iwao and Tayler also demonstrated the similar conclusion. With the increase of population density, ag- gregation index declined. The reason of aggregation distribution was related to the life habits of E. gigantea.

关 键 词：核桃园 枣大球蚧 空间分布 

分 类 号：S763.303[农业科学—森林保护学]