锈色粒肩天牛幼虫空间分布型及抽样技术研究  

Study on the Spatial Distribution Pattern and Sampling Techniques of the Larvas of Apriona swainsoni(Hope)

作　　者：孙丹萍[1] 

机构地区：[1]河南科技大学林业职业学院,河南洛阳471002

出　　处：《西北林学院学报》2007年第3期120-123,共4页Journal of Northwest Forestry University

基　　金：河南省科技攻关项目"河南省锈色粒肩天牛灾变规律及综合治理技术研究"(0324080006)

摘　　要：对洛阳市区10个区段的国槐进行抽样调查,应用聚集度指标检测和回归分析,对锈色粒肩天牛幼虫空间分布型进行了研究。结果表明:锈色粒肩天牛幼虫空间分布为聚集分布,其聚集原因可能是由某些环境因素与昆虫本身聚集习性所致。建立了该虫幼虫的理论抽样数公式和序贯抽样决策限模式。Through sampling survey of Sophora japonica in sections in Luoyang, spatial distribution of the larvas was investigated by aggregation index examination and regression analysis. The results indicated that the spatial distribution was aggregated distribution. Factor causing aggregation were discussed gathering average-λ. Environmental factors and the aggregation nature of the insect were the two main factors. The academic sampling formula about the vermin larvas, and sequential sampling formula were formed in the same time.

关 键 词：锈色粒肩天牛 幼虫 空间分布 抽样 国槐 

分 类 号：S763.380.3[农业科学—森林保护学]