摘要
经八种聚集度指标的测定,竹螟幼虫在竹林的空间分布属聚集分布型。毛竹第10盘至第20盘竹枝上的竹螟幼虫量与全株幼虫量有显著的直线回归关系,尤以第15盘枝以上的相关关系更为密切。根据竹螟幼虫分布的特点,确定了不同密度下的最适抽样数、序贯抽样的应用和调查取样方法。
Eight aggregation indices were determined to study the spatial distribution pattern of the larva of the bamboo leav-roller, Algedonia coclesalis (Walker) in bamboo stands. The results were showed that: (1)the spatial distribution pattern of this larva were aggregated: (2) there was a significantly linear regression in the quantities of this larva between on the whole bamboo plant and on the 10th—20th ring-branch, especially on above the 15th ring-branch. The optimum sampling number, the sequential sampling application and the sampling method at different densities were determined based on the characteristics of the larva's distribution.
出处
《竹子研究汇刊》
北大核心
1992年第3期18-23,共6页
Journal of Bamboo Research
关键词
竹螟
空间分布型
毛竹
Alged6nia Coclesalis Walker
Spatial Distribution Pattern
