摘要
对茶梢蛾幼虫的空间分布型及抽样技术的研究结果表明,幼虫为普通聚集分布,其基本成分是面积为一株油茶大小的个体群,个体间相互吸引。调查时以棋盘式取样为佳。根据空间分布型分析,计算出序贯抽样模型为:最适理论抽样数模型为:
The spatial distribution patterns for larvae of the tea shoot borer and the relevant sampling method, were s'tudied. The results indicated that the spatial distribution pattern of larvae falls into the common aggregatibnal distribution. Its basic composition is the individuals group and the size is equal to the area of one tea tree. The individuals attract one another. The best sampling method is the chessboard-like method.According to the results of spatial distribution, the sequential sampling model and the fittest theoretical model to determine the number of samplings were worked out, which are, respec-
tively: Tq=
出处
《经济林研究》
1992年第2期56-62,共7页
Non-wood Forest Research
关键词
茶梢蛾
空间分布型
抽样技术
Tea shoot borer
spatial distribution pattern
smpling tech-nique,
