摘要
侧柏毒蛾 (ParocneriafurvaLeech)是柏类园林树木的主要害虫之一 ,笔者利用Iwao等 11种方法对其幼虫的空间分布进行了测定。结果表明 :侧柏毒蛾幼虫在林间属于聚集分布 ,且符合负二项分布 ,由此得出了林间理论抽样数公式 ,且林间抽样方式以棋盘式最好。
Parocneria furva is one of the pests in Platycladus orientalis.Eleven methods were used to determine the larvae spatial pattern of Parocneria furva in arborvitae wood. The results showed that the spatial distribute pattern fitted the negative binomial series and the larvae had a clumped spatial distribution. The formula for determining the optimum theoretical sampling number was provided. The average errors of several sampling methods for sampling larval population in the field were compared and the chessboard method was the best.
出处
《安徽农业科学》
CAS
2004年第5期988-989,共2页
Journal of Anhui Agricultural Sciences
关键词
侧柏毒蛾
幼虫
空间分布
抽样技术
Parocneria furva,Larvae,Spatial Distribution Pattern,Sampling technique
