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萝卜蝇 Delia floralis(Fall’ne)是吉林省秋白菜、萝卜的重要害虫,尤以秋白菜受害严重.为了适应农业生产发展的需要,作者对萝卜蝇发生与气象因素的关系作了研究。现将结果报告如下:材料和方法1982~1990年,在长春、吉林市蔬菜区固定4个点。调查内容和方法:成虫于7月25日至9月15日,在白菜地设置2个装有糖蜜诱剂的诱蝇器,每日早晨观测记载诱蝇量。卵于8月1日至9月15日,每3天调查1次。在有代表性的白菜地内,取5点,每点10株,计50
Delia floralis (Fall’ne) is an important pest of autumn cabbage and radish in Jilin Province, especially autumn cabbage.During the development of agricultural production, the author studied the relationship between the occurrence of radish and meteorological factors. Now the results are reported as follows: Materials and Methods From 1982 to 1990, four vegetable fields were fixed in Changchun and Jilin City. Investigation contents and methods: Adults from July 25 to September 15, set in the cabbage with two molasses attractants lure fly trap, daily morning fly recorded the amount of trapping records. Eggs from August 1 to September 15, every 3 days survey 1. In the representative of cabbage, take 5 points, 10 points per point, 50