烟粉虱成虫在不同木薯品种上的空间分布型研究  

Study on Spatial Distribution Patterns of Bemisia tabaci Adults in Different Cassava Species

作　　者：段春芳[1] 宋记明[1] 沈绍斌[1] 严炜[1] 刘倩[1] 李月仙[1] 娄予强[1] 熊贤坤[1] 周迎春[1] 易怀锋[1] 张林辉[1] 刘光华[1] 

机构地区：[1]云南省农业科学院热带亚热带经济作物研究所,云南保山678000

出　　处：《热带作物学报》2015年第8期1456-1461,共6页Chinese Journal of Tropical Crops

基　　金：国家木薯产业技术体系资助项目(No.CARS-12-ynlgh);云南省技术创新人才培养对象培养项目(No.2011CI060)

摘　　要：烟粉虱(Bemisia tabaci)是木薯上一种重要的害虫,为明确烟粉虱在木薯上的空间分布,及时采取有效的防控措施,在田间调查的基础上,采用聚集度指标、Iwao的M*-m回归法、Taylor幂法则、Lα-m回归模型和Z-V模型对烟粉粉虱成虫在不同木薯品种上的空间分布型进行了研究。结果表明木薯上的烟粉虱成虫在密度较低时呈现均匀分布,密度高时聚集分布,且其聚集是由环境因素造成的。在木薯叶层上的分布总体呈现数量上层>中层>下层,在SC11、GR4和SC124上烟粉虱成虫密度较大,SC8上密度最低。The whitefly, Bemisia tabaci, is a major pest of cassava, In order to make a cher underatanding of the spatial distribution of Bemisia tabaci on cassava and to carry out control methods effectively and timely, using the spatial distribution patterns of Bemisia tabaci adults in different cassava Species were analyzed by different aggregation indices, Taylor＇ power law, Iwao＇s M＊-m regression analysis, Lan＇s Lα-m model and Zhang＇s Z-V model.The results showed that the spatial distribution pattern of B. tabaci adults distributed evenly when its population density was low, but sggregated when its population density was high. The numbers of B. tabaci adults on the different leaf layers were significantly different, with the sequence of upper leaves middle leaves lower leaves, and B. tabaci adults mainly clustered on the leaf back of cassava. The density of B. tabaci adults on SC11, SC124 and GR4 were the most, SC8 was the least.

关 键 词：木薯 烟粉虱 空间分布 

分 类 号：S533[农业科学—作物学] S435.6