杨小舟蛾空间分布型的初步研究  

Preliminary study on the space distribution model of Micromelalopha troglodyta (Graeser)

作　　者：梁波 于艳华 彭红梅 郭同斌 赵惠忠 王光标 徐勤峰 周勇 于爱香 

机构地区：[1]徐州市林业中心 [2]邳州市森林病虫防治检疫站 [3]新沂市森林病虫防治检疫站,江苏新沂221400 [4]铜山县森林病虫防治检疫站

出　　处：《江苏林业科技》2002年第3期15-18,共4页Journal of Jiangsu Forestry Science & Technology

基　　金：徐州市科学技术委员会科技计划项目 (X984 4 )

摘　　要：运用 7种聚集度指标 ,测得杨小舟蛾第 1,3代卵块在杨树林内的空间分布型属均匀分布 ;第 1代幼虫属均匀分布 ,第 3,4 ,6代幼虫属聚集分布。通过方差分析 ,F检验和SSR测验表明 ,杨小舟蛾第 1,3,4 ,6代幼虫在树冠东、南、西、北 4方位间虫口数量差异均不显著 ;第 1,3,6代幼虫在树冠上、中、下 3层间虫口数量差异均不显著 ,第 4代幼虫在树冠上、中、下 3层虫口数量差异为 :上层与下层及上层与中层间差异均极显著 。The space distribution model of egg cakes produced by the first and third generation larva of Micromelalopha troglodytaa is tested to be homogenous distribution by using seven kinds of polymerizing degree index.The space distribution model for the first generation larva is homogenous distribution,but that the third,forth and sixth generation larva of Micromelalopha troglodyta is polymerizing distribution.The difference of insect quantity in every direction of crown is not notable for the first fourth and sixth generation larva of it neither is that in the upper,middle And lower of crown for the first,third and sixth generation larva of it But the different of insect quantity is very notable in the upper middle.And lower of crown for the fourth generation larva.

关 键 词：杨小舟蛾 空间分布型 聚集度指标 杨树害虫 

分 类 号：S763.303[农业科学—森林保护学] S763.721.1[农业科学—林学]