【目的】 明确橘小实蝇Bactrocera dorsarlis（Hendel）在李产区不同寄主间的转移为害规律，为制定控制其种群的策略和防治技术提供参考和依据。【方法】 选择广西李主产区，调查橘小实蝇潜在寄主种类、潜在寄主果实成熟期、寄主受害率及橘小实蝇成虫在各寄主上的转移为害规律，采用Pearson相关性分析与主成分分析方法分析影响橘小实蝇发生的气象因子。【结果】 李产区不同月份成熟的11种瓜果中，李受害率最为严重，最高达22%，枇杷、酸梅、黄皮、沙糖橘、皇帝柑、柚和柿可作为橘小实蝇的潜在寄主；橘小实蝇的转移为害规律为枇杷（4月）→三月李、三华李、酸梅和黄皮（5-8月）→沙糖橘、皇帝柑、柚和柿（9-10月）→柿（11月）；李产区橘小实蝇始见日和终见日分别为4月26日和12月22日，全年共有2个成虫发生高峰期，分别为7月上中旬和9月中下旬，其发生规律与气温显著相关。      【结论】 明确了李产区橘小实蝇的转移为害规律及其与气象因子的相关性，建议李产区应在4月份集中防治枇杷上的橘小实蝇有利于减轻对李的危害。

[Objectives]  To clarify the temporal trend in damage to different fruit crops caused by Bactrocera dorsalis (Hendel) in a plum, Prunus salicina Lindl., growing area, and thereby facilitate the development of new strategies and technology to control this pest. [Methods]  Potential host species, fruiting periods, the amount of damage to each fruit crop and the pattern of spread of B. dorsalis were investigated. The relationship between the population dynamics of this pest and meteorological factors in plum producing area of Guangxi were also analyzed using Pearson correlation and principal component analysis. [Results]  A total of 11 fruit producing species mature in different months in the plum producing area. Among the fruit producing species investigated (Eriobotrya japonica, Prunus mume, Clausena lansium, Citrus reticulate, C. reticulate, C. maxima, P. salicina and Diospyros kaki), the highest (22%) percentage of damaged fruit was recorded in P. salicina. The temporal trend of damage to different fruit crops was: Eriobotrya japonica (April) →P. salicina cv. ‘Sanyue’ and ‘Sanhua’, Prunus mume, and Clausena lansium (May to August) →Citrus reticulate cv. ‘Shatangju’ and ‘Huangdi’, C. maxima, and Diospyros kaki (September to October) →D. kaki (November). Male B. dorsalis should be trapped using sex pheromone lures between 26 April and 12 December. Two occurrence peaks of B. dorsalis adults were observed in the first half of July and the latter half of September, and occurrence was significantly correlated with air temperature. [Conclusion]  There is a clear temporal trend in the damage caused by B. dorsalis to different fruit crops and the occurrence of this pest was correlated with meteorological factors. Controlling B. dorsalis on E. japonica in April could reduce subsequent damage to P. salicina crops.