关键词: 麦红吸浆虫, 卵寄生蜂混合种群, 地统计学, 空间结构, 模拟

Abstract: Geostatistis methods were adopted to analyze the spatial pattern of Sitodiplosis mosellana (Diptera: Cecidomyiidae) at its different development periods and of its egg parasitoids mixed population (Tetrastichus sp. and Platygaster error; Hymoneptera: Eulophidae and Platygastridae). The aggregated spatial arrangements for S. mosellana cocoon, adult, and larva and for egg parasitoids mixed population could be well described by spherical model, spherical-exponential model, linear sill model, and spherical-exponential model, respectively. The spatial dependence range of S. mosellana cocoon, adult at initial emergence period, adult at peak emergence period, and larva, and of egg parasitoids mixed population was 53.6, 190.6, 154.1, 4.2 and 280.3 m, and the aggregation intensity was 30.5%, 95.6%, 96.3%, 14.9% and 953%, respectively. The simulated maps of the spatial distribution produced by Kriging model could intuitively analyze the dynamic changes of S. mosellana at its different development periods and of egg parasitoids mixed population from the two aspects of time and space.

Key words: Sitodiplosis mosellana, egg parasitoids mixed population, geostatistics, spatial structure, simulation