桔小实蝇在云南的危害与分布

桔小实蝇在云南可以危害 10余种类水果 ,主要寄主种类有芒果、桃、梨和柑桔等 .其种群数量和分布与寄主植物的种植面积和分布区域有关 ,并受寄主植物种类、品种类型 ,以及成熟程度所影响 .桔小实蝇在云南可以周年发生 ,在冬季主要分布在西双版纳 ,以及思茅、红河、玉溪、德宏、文山等地州的部分地区 .随春季气温回升 ,其分布区域逐渐由南向北扩张 .至夏末秋初 ,桔小实蝇分布区域最广 ,大体在姚安以南的云南大部地区

On Damages and Distributions of Fruit Fly (Bactrocera dorsalis Hendel)in Yunnan Province,Southern China

The oriental fruit fly ( Bactrocera dorsalis Hendel) could injury more than 10 fruit species in Yunnan,especially mango,pear,peach,orange and so on.The areas and distribution districts of these fruits play an important role in the oriental fruit fly population size and geological distribution.However, Bactrocera dorsalis H.exhibited the various preferences on these fruits for its reproduction.Even for the same host species but different breeds,or different maturity status for the same breeds,the fly's damages were also different.The oriental fruit fly occurs all over year in Yunnan.It only appears in Xisuanbanna and some parts of Simao,Honghe,Yuxi,Dehong and Wengsan through winter.With temperature increasing in spring,the the fly expended from south to mid- and north part of Yunnan.The biggest distribution area of the fly is in late summer and early autumn,which almost covers most district of Yunnan from Yiaoan County of Dali district.