昆明市栓皮栎潜叶蛾空间分布型研究

Spatial Distribution Type Research on Phyllocnistis citrella of Quercus variabililis in Kunming

栓皮栎潜叶蛾是栓皮栎叶部的一种主要害虫,食物专一,成虫产卵于栓皮栎嫩叶的中脉附近,每叶产卵数粒,幼虫孵化后潜入叶片组织内钻蛀虫道,取食叶肉,形成棕褐色虫斑,往往一张叶片上有2~3个虫斑,被害率高达100%。文章利用DPS数据处理系统对栓皮栎潜叶蛾进行聚集度计算回归分析及空间分布型频次分布检验。在了解栓皮栎潜叶蛾空间分布型的基础上,利用Iwao的M＊-m回归方程计算栓皮栎潜叶蛾的最适抽样数。

Phyllocnistis citreUa is a kind of Oriental oak leaf pests, food is single - minded. Usually, the imago lay a few eggs near the midrib of each leaf, larvae hatch into leaf tissues, drill borers, eat meso- phyll, and form brown spot of which 2 -3 leaf spot on a piece of leaf, the infestation rate is as high as 100%. DPS data processing system was applied to analyze concentration calculation type and the spatial distribution of frequency distribution test. Based on the analysis of spatial distribution type of o Phylloc- nistis citrella, and the use of Iwao M ＊ - M regression equation, the optimal sampling number of Phylloc- nistis citrella has been calculated.