梨瘿蚊幼虫的空间分布型及序贯抽样技术  

Spatial Distribution Pattern of Larva of the Pear Leafecuring Midge and Sequential Sampling Technique

作　　者：田瑞[1] 胡红菊[1] 王友平[1] 陈启亮[1] 杨晓平[1] 张靖国[1] 

机构地区：[1]湖北省农业科学院果树茶叶研究所,武汉430209

出　　处：《华中农业大学学报》2008年第6期728-731,共4页Journal of Huazhong Agricultural University

基　　金：国家科技基础条件平台项目(2006DKA21002-24);农作物种质资源保护项目(NB06-070401-10)资助

摘　　要：在对梨园梨瘿蚊幼虫调查分析的基础上,应用聚集度指标I、wao方程和Taylor幂法则模型测定方法分析了梨瘿蚊幼虫在梨树上的空间分布格局,并研究了梨瘿蚊幼虫在梨树上的序贯抽样技术。结果表明:梨瘿蚊幼虫在梨树内空间分布属聚集分布,个体间相互吸引,分布的基本成分是个体群。平均拥挤度m*与平均密度m的回归方程为m*=1.953 68+1.432 29m(R=0.697 8**),相关性极显著。以Iwao的序贯抽样为基础,结合Kuno的序贯抽样提出复序贯抽样技术,防治指标上限T0'(n)=3n+1.96 12.75n,下限T0"(n)=3n-1.96 12.75n,截止线T(n)=1.953 68+1d02-0.432 29/n(t=1.96,d=0.2),最大样本数为n=46。On the basis of the investigation on the larvae of the pear leafecuring（Dasinenra pyri Bouche） in the pear garden,the aggregation index,Iwao Equation and Taylor Power-law model were applied in the analysis of spatial distribution pattern on a pear tree and sequential sampling technique of the larva of the pear leafecuring was studied by means of aggregation index. All the results showed that the spatial distribution pattern of the larvae of the pear leafecuring belonged to aggregation with the form of colony, which means the larvae attract each other, but the basic element of the distribution is individual. The regression equation of mean crowding（m^＊ ） and mean density（m）of the larvae of the pear leafecuring was： m^＊ =1. 953 68＋1. 432 29m（R=0. 697 8^＊ ＊ ） ,with a very significant correlation. On the basis of the Iwao＇s sequential sampling technique combined with Kuno＇s sequential sampling technique,the complex sequential sampling was put forward. The upper limit, lower limit, and close string were T0＇（n）=3n＋1.96 12.75n,,T0＂（n）=3n-1.96 12.75n,T（n）=1.953 68＋1d02-0.432 29/n（t=1.96,d=0.2）for target pest respectively. The largest sampling number was 46.

关 键 词：梨瘿蚊 空间分布 序贯抽样 

分 类 号：S436.612.2[农业科学—农业昆虫与害虫防治]