茶跗线螨是世界性害螨之一,近年来在我国的危害日趋严重,已成为四川全省茶区的主要害虫,严重影响了茶叶的产量和品质。笔者于1987～1989年对该螨在茶园的空间分布型和最适抽样数进行了研究,旨在为调查测报和防治提供依据。1空间分布型测定表明:扩散系数>1,聚集指数>0,扩散型指数>1,C_A 指数>0,Lioyd 指数>1。无论从哪一项聚集指数评判,茶跗线螨种群在田间的空间分布均为聚集分布型。根据Iwao 的m~(?) 与m 回归法分析表明:m~(?)=10.2545+1.1317m(r=0.9384(?)),α=10.2545,说明种群空间型的基本成分是个体群;β=1.1317,说明为聚集分布型。根据α>1, Tea mites is one of the world’s pest mites. In recent years, the harms of these mites have become more and more serious in our country. It has become the major pest in the tea area of ​​Sichuan Province and seriously affected the yield and quality of tea. The author in 1987 ~ 1989 mites in the tea garden spatial distribution and the optimal number of samples were studied in order to provide evidence for investigation and control. 1 Spatial distribution showed that diffusion coefficient> 1, aggregation index> 0, diffusion index> 1, C_A index> 0 and Lioyd index> 1. No matter which aggregation index is judged, the spatial distribution of Tetranychus urticae mites in the field is aggregated distribution. According to Iwao’s m ~ (?) And m regression analysis, m ~ (?) = 10.2545 + 1.1317m (r = 0.9384 (?)) And? = 10.2545, indicating that the basic components of the spatial type of population are individuals; = 1.1317, indicating an aggregate distribution. According to α> 1,