【摘要】 橘小实蝇Bactrocera dorsalis在上海地区1 a发生6~7代,主要发生在5—11月,个别暖冬,成虫可存活至12月上旬。该虫每年5月零星发生,随着气温的上升,虫口数量不断增加,9月中下旬达到高峰,之后随着气温的下降,虫口数量也呈下降趋势,全年呈单峰型变动。橘小实蝇在上海的虫口数量变动主要受降水影响,温度和寄主果实也是重要的影响因子。更多还原

【Abstract】 B.dorsalis had 6-7generations a year in Shanghai and occurred mainly between May and November.The adult fly could survive to early December in warm winter.Its population was low in May and increased with the temperature with a peak in mid September.Then,the population decreased with the temperature.The population dynamics were single peak type.Rainfall was the most important factor influencing the population density.Besides,temperature and host fruits were also important factors.更多还原