摘要
采用逐株抽样的方法,对杨尺蠖越冬蛹在寄主树冠投影下土壤中水平方向和垂直深度分布格局进行调查和测定。结果表明,杨尺蠖在土壤中呈聚集分布,大部分集中在树冠的投影下,距寄主干半径20-80 cm的范围,地表土层在20-35
In this paper, the spatial distributing pattern of Apocheami cinerarius Erschoff pupa in winter in earth was stud- ied. The result showed that the characteristics of the spatial distributing pattern of pupa of Apocheami cinerarius Ersehoff in winter was estimated as aggregated type in the forest. The pupas were mostly aggregated in 20 - 80 em away from the trunk in plane, and in 20 -35 em deep in earth.
出处
《江苏林业科技》
2008年第1期18-20,共3页
Journal of Jiangsu Forestry Science & Technology
关键词
杨尺蠖
空间分布型
Apocheima cinerarius Erschoff
Spatial distributing pattern
