棉田烟粉虱成虫空间分布型与序贯抽样技术  

Spatial Distribution Pattern and Sequence Sampling Technique of Bemisia tabaci(Gennadius) Adult in Cotton Field

作　　者：谭永安[1] 肖留斌[1] 魏书艳[1] 王震[1] 赵洪霞[1] 柏立新[1] 

机构地区：[1]江苏省农业科学院植物保护研究所,江苏南京210014

出　　处：《江苏农业学报》2009年第6期1273-1277,共5页Jiangsu Journal of Agricultural Sciences

基　　金：国家"十一五"重大科技支撑计划(2006BAD08A07);国家转基因基金项目(2008ZX08011-002)

摘　　要：为探讨烟粉虱成虫在长江下游的江苏沿江棉区不同棉田(Bt棉和常规棉)的种群空间分布型,指导田间取样,本研究应用5种空间分布型聚集度指标和2种回归方法(Iwao回归法及Taylor幂法则),于2008年测定和分析了烟粉虱成虫的空间分布格局。结果表明:烟粉虱成虫种群不论在Bt棉田还是在常规棉田,种群空间分布格局均一致,8月1日之前和10月3日以后,烟粉虱成虫在3个不同品种棉田中都呈均匀分布;8月1日至10月3日期间,符合聚集分布的检验标准。本文还探讨了影响其聚集的原因,并利用分布型参数确定了棉田烟粉虱成虫的理论序贯抽样数。In order to investigate the spatial distribution patterns of Bemisia tabaci（Gennadius） adult,its population aggregating indexes in two types of cotton fields （Bt cotton and non-Bt cotton） were calculated based on the five different kinds of related index formulae and two regression methods（Taylor＇ s and Iwao＇ s regression formulations）. The results indicated that the spatial distribution patterns of B. tabaci were unanimous on Bt cotton and non-Bt cotton, and the adults were even distribution before August 1 and after October 3. The spatial distribution of adult exhibited aggregated from August 1 and October 3. In addition, the theoretical sequence sampling number was obtained from the parameters of the distribution pattern.

关 键 词：棉花 品种 烟粉虱 空间分布 理论抽样数 

分 类 号：S431.16[农业科学—农业昆虫与害虫防治]