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杜仲梦妮夜蛾是近年来严重危害杜仲的主要食叶害虫,幼虫专性取食杜仲叶片。本研究运用6种聚集度指标(m*/m、c、k、Iδ、I、Ca)和两种回归模型(Taylor幂法则和m*-m回归模型)研究分析了种植园中杜仲梦妮夜蛾幼虫种群的空间分布型,利用Blackith种群聚集均数λ解析幼虫种群的聚集成因。结果表明杜仲梦妮夜蛾幼虫种群呈均匀分布,而且这种空间分布型是由环境因素引起的。建立了杜仲梦妮夜蛾幼虫抽样数公式N=[3.8416(0.022/m-0.152)]/D2和序贯抽样模型T(n)槡=0.1n±0.053 n。本研究为杜仲梦妮夜蛾虫情调查、害虫治理决策提供参考依据。
Eucommia dreams Noctuidae is a serious damage in recent years eucommia major leaf-feeding pests, eutrophic larvae feeding Eucommia leaf. In this study, six kinds of aggregation indexes (m * / m, c, k, Iδ, I, Ca) and two regression models (Taylor power law and m * -m regression model) The spatial distribution patterns of larvae of larvae were analyzed using the Blackith clustering means λ to analyze the causes of larval population aggregation. The results showed that the population of Eucommiae larvae was evenly distributed, and the spatial distribution was caused by environmental factors. The formula of sampling number of larvae of Nocturnus furnacatum N = [3.8416 (0.022 / m-0.152)] / D2 and sequential sampling model T (n) 槡 = 0.1n ± 0.053 n were established. This study provides a reference for the investigation of insect nymphs in Eucommia ulmoides nymphae and pest management decisions.