柳杉毛虫抽样技术的研究  

Studies on Sampling Techniques of Dendrolimus latipennis

作　　者：赵仁友 罗松根 徐真旺 林少波 华宝松 

机构地区：[1]浙江省丽水地区森防站,丽水市323000 [2]遂昌县森防站

出　　处：《浙江林业科技》1999年第1期26-30,共5页Journal of Zhejiang Forestry Science and Technology

摘　　要：在确定柳杉毛虫空间分布型的基础上，采用Iwao回归序贯分析方法，对柳杉毛虫幼虫的序贯抽样作了分析研究。得出了不同允许误差下的最适抽样数量。对柳杉毛虫的双重抽样进行了研究，得出以底部2根枝条平均虫口数量通过预测式y＝9．7544×1．1574来预测全株虫口数量。According to the space distribution type of Dendrlimus latipennis, the sequential sampling of Dendrolimus latipennis was studied by application of Iwao regressive sequential analysis, the optimum sampling number on the different allowable error Condition was acquired an equation to predict the larva number on the whole tree was given by its dual sampling.

关 键 词：柳杉毛虫 序贯抽样 空间分布型 柳杉 

分 类 号：S763.713.1[农业科学—森林保护学]