新疆温室白粉虱自然寄生蜂研究初报

近年来随着农村产业结构的调整,新疆各地设施农业生产发展迅猛。但是,温室虫害的危害逐渐呈加重趋势,特别是粉虱类害虫。对全疆主要农区温室进行了广泛调查,表明危害温室内蔬菜的粉虱类害虫为温室白粉虱和B型烟粉虱。除吐鲁番地区以外,新疆多数地区的温室粉虱以温室白粉虱为主。对采自新疆各地白粉虱寄生蜂标本进行的室内鉴定,结果显示温室白粉虱的寄生蜂均为温室粉虱恩蚜小蜂(Encarsia formosaGahan),且在新疆东部、南部和北部的广大农区温室均有分布,其自然寄生率为12.76%~69.53%,田间初步试验表明,新疆本地蜂种对温室白粉虱具有良好的控制作用。

Investigation on Parasitoids of Trialeurodes vaporariorum in Xinjiang

The aim of this study was to investigate the effect of parasitoids of Trialearodes vaporariorum on the vegetables production in green-house of Xinjiang.In recent years,Trialeurodes vaporariorum especially whitefly pests have done greater and greater damage to the vegetables in greenhouse.The survey was conducted in the greenhouse of the main agricultural district in Xinjiang to study the extent of damage being done by Trialeurodes vaporariorum and B-type Bemcsia tabacito the vegetables in greenhouse.In addition to the Turpan region,the greenhouse whitefly Trialeurodes vaporariorum occupies the majority in Trialeurodes vaporariorum Westwood in many regions of Xinjiang.The specimens collected from various parts of Xinjiang were identified.The results indicated that the parasitoids of Trialeurodes vaporariorum were the Encarsia formosa Gahan distributing in greenhouse of agricultural district in the East,South and North of Xinjiang,whose natural parasitic rate was from 12.76% to 69.53%.The preliminary test in the field showed that it could well control the whitefly pest in greenhouse.