【作者】 桂连友； 税元林；

【Author】 Gui Lianyou Shui Yuanlin (Department of Agronomy,Hubei Agricultural College,Jingzhou,Hubei 434103)

【机构】 湖北农学院农学系；

【摘要】 本文应用聚集度指标法和回归分析法研究了茶蓑蛾越冬幼虫的空间分布型,结果表明,越冬幼虫属于聚集型分布,分布的基本成分是个体群。根据 Iwao 方法分析并计算了不同虫口密度下林间调查的最适抽样数,列出了序惯抽样分析表。更多还原

【Abstract】 In this paper spatial distribution pattern for overwintering larvae of Clania minus- cu/e Butler was studied by means of several indices of aggregation and by regression analysis method.The results show that the spatial distribution patterns of the overwintering larvae obeys aggregative distribution,that the basic component of spatial distribution pattern is loose colony.And,by Iwao’s methods,the optimal sampling number of forest survey is analysed and calculated,and the sequential analysis is also presented.更多还原