茶园害虫茶树绿鳞象甲空间分布型研究

Spatial Distribution Pattern of Hypomeces squamosus Fabricius in Tea Garden

应用聚集度指标、Taylor幂法则、Iwao的m*-m回归分析法,对茶树绿鳞象甲空间分布型进行了分析。结果表明:茶树绿鳞象甲在茶树上空间分布属聚集分布,个体间相互排斥,分布的基本成分是个体群,其聚集性随密度的增大而增加。其聚集原因经Blackith种群聚集均数测定,茶树绿鳞象甲的聚集均数均大于2,其聚集是由于害虫本身的群集行为与环境条件综合影响所致。

The spatial distribution pattern of Hypomeces squamosus Fabricius was analyzed by five aggregation indices, Taylor＇s power law and Iwao＇s m^＊-m regression analysis. The results showed that the spatial distribution pattern of Hypomeees squamosus Fabricius in tea garden belonged to aggregated distribution with the form of colony, which means they excluded each other, and the basic component of the distribution was individual colony, and the aggregation intensity increased with increasing density. The aggregation causes were tested by Blackith mean aggregation method, the results indicated that the mean aggregations of Hypomeces squamosus Fabricius in tea garden were all more than two, and the aggregation caused by formicating behavior of Hypomeces squamosus Fabricius and environmental conditions.