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本文应用频次分布拟合和聚集度指标对白茨一条萤叶甲的空间格局进行了测定。卵块符合波松分布,一龄幼虫符合负二项分布,二龄幼虫和三龄幼虫既符合奈曼分布,也符合负二项分布成虫符合波极分布。三龄幼虫最适抽样数(N)与均数()的关系为:三龄幼虫的序贯抽样方案为T(n)=0.4±1.4278(N)~(1/2)。
In this paper, we use the frequency distribution fitting and clustering index to measure the spatial pattern of a Diabfilcophora. The egg masses conformed to the Poisson distribution. The first instar larvae met the negative binomial distribution. The second instar larvae and the third instar larvae both conformed to the Neiman distribution and also fitted with the negative two distribution adults. The relationship between the optimal sampling number (N) and mean () of third instar larvae was as follows: The sequential sampling plan of third instar larvae was T (n) = 0.4 ± 1.4278 (N) ~ (1/2).