摘要
采用 6种空间分布型聚集度指标 ,测定了苹果绵蚜在苹果树新梢、侧枝、树干 (环剥处 )和根部的空间分布型。结果表明均呈聚集分布 。
The spatial distribution pattern of Eriosoma lanigerum was determined on the new shoot, lateral branch, trunk and root of apple tree in this paper. All of them belonged to the aggregative distribution. The suitable sampling method of them was provided respectively.
出处
《华东昆虫学报》
2003年第2期72-75,共4页
Entomological Journal of East China
关键词
苹果绵蚜
苹果
空间分布型
取样方法
Eriosoma lanigerum
apple tree
distribution pattern
sampling method
