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用频次分布x~3法,Iwao平均拥挤度M=a+βX,Taylor幂法则,s~2=aX~b及聚集度指标等方法,分析研究了花溪地区莱粉蝶种群越冬代及来年第一代幼虫和蛹的空间分布型。粉蝶幼虫及蛹在甘蓝上呈负二项分布,其结构是以疏松的个体群形式存在,个体群间是聚集的,莱个体群内的幼虫及蛹是随机的。此外利用空间分布型参数估计了个体群的大小和平均密度的关系。同时分析了密度与聚集强度的关系和聚集,原因。
The frequency distribution x ~ 3 method, Iwao average crowding degree M = a + βX, Taylor power law, s ~ 2 = aX ~ b and the degree of aggregation index and other methods were analyzed in the Huaxi region, The spatial distribution of larvae and pupae. The larva and pupae exhibited negative binomial distribution on cabbage. The structure of the larvae and pupae of cabbage butterfly was in the form of loose individuals. The larvae and pupae in the individuals were clustered. In addition, the spatial distribution parameters were used to estimate the relationship between population size and average density. At the same time, the relationship between density and aggregation intensity, aggregation and reasons were analyzed.