白斑新灰蝶幼虫空间分布型的初步研究  

Spatial distribution pattern of Neolycaena tengstroemi in Caragana korshinskii

作　　者：贾彦霞[1] 王新谱[1] 田会刚 常春燕[1] 伏芳伟 

机构地区：[1]宁夏大学农学院,宁夏银川750021 [2]宁夏罗山国家级自然保护区管理处,宁夏吴忠751900

出　　处：《中国森林病虫》2014年第6期22-24,共3页Forest Pest and Disease

基　　金：宁夏高等学校科学研究项目(2012)

摘　　要：白斑新灰蝶Neolycaena tengstroemi(Erschoff)是近几年在宁夏中部干旱带危害柠条锦鸡儿Caragana korshinskii的害虫之一,主要以幼虫危害柠条的花器。应用6种聚集度指标,Taylor幂法则、Iwao回归法2种回归模型对白斑新灰蝶幼虫的空间分布型进行测定,分析其聚集原因。结果表明:白斑新灰蝶幼虫在柠条上呈聚集分布,且符合负二项分布;幼虫平均密度小于2.18头/株时,其种群聚集主要受柠条林生态环境影响,但当平均密度不小于2.18头/株时,种群聚集受种群生物学特性与环境因素共同作用的影响。Neolycaena tengstroemi was one of serious pests attacking Caragana korshinskii in the arid zone of Central Ningxia in recent years. N. tengstroemi larvae damaged the floral organs of C. korshinskii. The spatial distribution patterns of larvae were determined by using 6 aggregation indexes,Taylor power lawand Iwao regression equation models. The results showed that the N. tengstroemi larvae in field had an aggregated distribution and fitted the negative binomial distribution. The population aggregation was mainly caused by environmental factors in stands of C. korshinski,but when the average density of N. tengstroemi was less than 2. 18 larvae per tree,the population aggregation was influenced by the interaction of the bionomics of N. tengstroemi population and environment.

关 键 词：白斑新灰蝶 空间分布型 聚集度指标 柠条锦鸡儿 

分 类 号：S763.42[农业科学—森林保护学]