摘要
本文在研究山楂叶螨(Tetranvehus viennensis Zncher)(又称山楂红蜘蛛)空间分布型的基础上,讨论了用于田间调查时的最适抽样单位,不同密度与理论抽样数的关系,有螨叶率与平均密度的关系,提出了防治指标为2头/叶的序贯抽样图和序贯抽样表。
Based on the spacial distribution of population of hawthorn red mite,the most suitable sampling unit in inspecting fields,the relationship between different density and the theoritic sampling amount,and the relation between mite rate in leaves and mean densityare discussed.The sequence sampling chart and sequence sampling table are presented.
出处
《山东农业大学学报（自然科学版）》
CSCD
1991年第2期116-120,共5页
Journal of Shandong Agricultural University：Natural Science Edition
关键词
山楂
叶螨
序贯抽样
抽样单位
hawthorn red mite
the most suitable sampling unit
sequence sampling
