摘要
１９９２～１９９３年在河北省涉县对花椒天牛在树上的分布规律以及空间分布型进行了系统研究。结果表明：在同一环境中植株越大受害愈重；老熟幼虫有８８．６％分布于１ｍ以下的树干上；花椒天牛幼虫的空间分布型属于聚集分布。还对其理论抽样数进行了研究。
The distribution pattern of Strandia bimaculata (white)on trees and its space dis-tribution model were systematically studied during 1992～1993 in Shexian county,Hebei province. The results showed that the bigger the tree,the more serious the damage, About 88.6% of mature larvae were found below lm of the trunks.The space distribution model of Strandia bimaculata(white)was of crowding one.Also,the theoretical sample number for the insect was studied in this paper.
关键词
花椒天牛
空间分布型
花椒树
Strandia bimaculata(white),space distribution model
sampling
