孪斑唇瓢虫空间分布型及抽样技术研究  

Spatial distribution pattern of Chilocorus geminus and sampling techniques

作　　者：魏治钢[1] 赵莉[1] 杨森[2] 

机构地区：[1]新疆农业大学农学院,乌鲁木齐830052 [2]新疆农业科学院植保所,乌鲁木齐830091

出　　处：《植物保护》2010年第4期94-97,共4页Plant Protection

基　　金：新疆维吾尔自治区科技厅重点攻关项目(200631102)

摘　　要：对孪斑唇瓢虫成虫、幼虫和蛹的空间分布型及抽样技术研究表明,各项聚集度指标均符合聚集分布的检定标准。聚集的原因是由其自身的行为习性和环境条件共同作用引起的。应用Taylor幂法则、Iwao回归分析法测定出孪斑唇瓢虫成虫、幼虫和蛹的空间分布型是基本成分为个体群的聚集分布,聚集强度随种群密度的升高而增加。同时采用Iwao方法求出了最适抽样数。Systematic studies on the spatial patterns of Chilocorus geminus Zaslavskij populations during adult, larval and pupal stages and the sampling techniques were reported. The results showed that the adults, larvae and pupae were aggregated in the forest, suggesting that the environmental conditions and the insect itself caused the aggregated pattern. The characteristics of the spatial pattern of C. geminus adults, larvae and pupae were estimated to be aggregated type by use of Taylor＇s and Iwao＇s methods. The optimum sampling number was obtained by Iwao＇ s method.

关 键 词：孪斑唇瓢虫 空间分布型 抽样技术 

分 类 号：S476.2[农业科学—农业昆虫与害虫防治]