A study on spatial structures of the adult population of the cotton bollworm(Helicoverpa armigera)
棉铃虫成虫种群空间结构的研究

The densities of adult population were investigated by pheromone\|trap from the overwintering generation to the third generation.The spatial models would be simulated by four types of models in geostatistics,and simultaneously their spatial relationships were also analyzed,the results could be made:(1)In the overwintering generation,the spatial structures were simulated by linear models in the directions of omnidirection,90° and 135°;but the spatial structures were described by spherical model and exponenti...