【摘要】 在实验室光照培养箱内设置 15、19、2 3、2 7、3 1和 3 5℃共 6种温度 ,以豇豆苗为寄主 ,观察美洲斑潜蝇各虫态的发育历期。在 15～ 3 1℃范围内 ,各虫态历期均随温度上升而缩短。 15℃时完成一代需 5 9 3 6d ,3 1℃时只需 13 84d。 3 5℃条件下卵和幼虫均发育正常 ,但蛹不能羽化。卵、幼虫、蛹、世代的发育起点温度分别为 12 2 0、9 5 7、11 2 3、11 5 0℃ ,相应的有效积温为 3 2 49、84 12、13 2 3 5、2 5 5 3 0日度。在实验室自然变温条件下 ,以豇豆苗为寄主 ,美洲斑潜蝇在南宁市年发生 18代 ,世代重叠 ,7～ 8月份完成一代只需 13～ 15d ,而在冬季低温时完成一代需 5 0d左右。更多还原

【Abstract】 At differnent constant temperature in the laboratory,namely 15,19,23,27,31 and 35?℃,respectively,the developmental duration of each stage of Liromyza sativae Blanchard which feed on cowpea seedling were observed in Nanning The developmental duration of each insect stage were shortened with the increase of temperature in the range of 15 31?℃ For finishing one generation,59 36 days were needed at 15?℃ and only 13 84 days at 31?℃ The egg ant larva can develop normally at 35?℃,but pupa could not emergent The development threshold temperature of egg,larva,pupa and generation was 12 20,9 57,11 23 and 11 50?℃,respectively,corresponding effective accumulative temperature was 32 49,84 12,132 35 and 255 30 day,degree Under the condition of changing temperature in the laboratory,and fed on cowpea seedling, L sativae had eighteen generations in Nanning,generation overlapping,Only 13 15 days were needed for finishing one generation during the July and August But at the low temperature in winter it needed about 50 days更多还原