葱蝇生物学特性的观察研究  

Investigation on Bionomics of Onion Fly

作　　者：滕学强[1] 何振昌[2] 

机构地区：[1]沈阳农业大学植保系 [2]沈阳农业大学植保系

出　　处：《沈阳农业大学学报》1989年第6期89-94,共6页Journal of Shenyang Agricultural University

摘　　要：本文对葱蝇(Delia antiqua(Mesen)]的生物学特性进行了观察研究,结果表明:葱蝇在沈阳地区1年发生3代,并有明显的世代重叠现象。越冬代成虫于4月下旬开始出现,5月上旬是羽化高峰期;第1代成虫于6月上旬开始出现,6月下旬是羽化高峰期;第2代成虫于7月中旬开始出现,羽化高峰期在8月上旬。越冬代雌成虫出现后6天开始产卵,11天达产卵高峰期;第1代雌成虫出现后4天开始产卵,7天达高峰期;第2代雌成虫出现后4天开始产卵,8天达高峰期。第1代卵的历期3.5天,幼虫历期13.7天,蛹历期14.0天;第2代印的历期3.0天,幼虫历期13.0天,蛹的历期13.5天。各代蛹均有不同程度的滞育现象。各代成虫的寿命分别为:越冬代17.9天,第1代20.8天,第2代25天。各代雌成虫的平均产卵量分别为:越冬代20.5粒,第1代17.3粒,第2代12.6粒。圆葱定植后除前期约20天不受葱蝇为害外,其余生长期都受到葱蝇的为害。第1、2代幼虫皆能使圆葱造成很大的损失。The onion fly, Delia antiqua (Meigen), is a serious pest of onion in Shenyang. The onion fly has 3 generations in a year and overwniters in the pupal stage. Adults of the over wintering generation emerge in late April, and those of the first and second generations in early June and mid July respectively. The peak emergence of the overwintering generation occurs in early May, and those of the first and second generations in late June and early August in succession. The pupae of the three generations go into diapause in different proportions. The average life-span of the adults of the overwintering generation is 17.9 days, those of the first and second generations are 20.8 days and 26.0 days. The average amounts of eggs laid by the female of these generations are 20.5, 17.3 and 12.6 respectively·Onion is attacked by onion flies in most of the growing season, and larvae of the first and second generations can cause severe damage to the onion plants.

关 键 词：圆葱 害虫 葱蝇 生物学特性 

分 类 号：S436.33[农业科学—农业昆虫与害虫防治]