摘要
本文采用 2种回归分析法和 6种聚集指标 ,对微红梢斑螟危害梢在马尾松林中的分布进行了研究。结果为聚集分布 ,在此基础上 ,利用 Iwao的方法进行了序贯抽样。
According to the test to six kinds of aggregation indexes and two kinds of regression analysis,the spatial distribution pattern of the suffer injury branches on Dioryctria rubella Hampson is aggregation distribution.On the basis of this,the sequential sampling is carried out.
出处
《贵州林业科技》
2003年第4期37-40,共4页
Guizhou Forestry Science and Technology
关键词
微红梢斑螟
危害
枝梢
空间分布型
抽样技术
松树
Dioryctria rubella Hampson suffer injury branch spatial distribution pattern sequential sampling
