摘要
小菜蛾幼虫空间分布型测定结果表明：（１）频次分布检验为负二项分布；（２）聚集度指标测定为聚集分布；（３）ｍ￣＊－ｍ的线性回归方程为ｍ￣＊＝０．０１１４＋１．４６０８ｍ，表明了属于最普通的聚集分布（负二项分布）．根据聚集均数λ测定值结果，分析了聚集原因．在分布型研究的基础上探讨了Ｋｕｎｏ种群序贯抽群的模型．
This paper determines the spatial distribution pattern of the larvae of diamond- back moth.Theresults show as follows(1)It belongs to the negative binomial distribution by means of test of frequency dis-tribution.(2)It falls into the pattern of the aggregated distribution using aggregated indices.(3)The linearregression equation of m￣*-m is m￣*=0.0114+1. 4608 m appears that it belongs to the most common aggre-gated distribution(or negative binomial distribution).The reasons for the aggregation was analysed accord-ing to estimation by mean aggregation(λ).Kuno's model of the population sequential sampling was studied,besed on the study of the spatial distribution pattern.
出处
《华东昆虫学报》
1994年第2期61-65,共5页
Entomological Journal of East China
