气候因素对杨小舟蛾生长发育的影响

对杨小舟蛾在青岛地区的生活史和发生规律进行了研究。结果表明:杨小舟蛾在青岛1年4代,世代重叠。日平均气温的变化对越冬代杨小舟蛾成虫的日羽化量及杨小舟蛾卵、幼虫和蛹的生长发育产生直接影响,日平均气温15℃时杨小舟蛾成虫开始出现,23.6～28.9℃时成虫羽化数量明显增加;成虫羽化的适宜湿度为60%～82%,以78%为最适。潮湿多雨的气候不利于杨小舟蛾幼虫的生长发育,干旱高温天气极易导致其爆发成灾。赤眼蜂、寄生蝇、杨扇舟蛾颗粒体病毒是其重要的寄生性天敌,对其发生危害具有一定的控制作用。

Influence of climate factors the development of Micromelalopha troglodyta Graeser

Biological characteristics,life cycle and epidemic law of Micromelalopha troglodyte in Qingdao were studied for the first time.The results showed： There are 4 generation per year.After the first generation,there is a severe generation overlap phenomenon.The number of adults winter generation emerged,and the development of eggs,larva and pupa were affected by the change of average temperature.This insect occurred when the daily average temperature was over 15℃,and prevailed when the daily temperature was 23.6～28.9℃.daily mean humidity of adult emergence was 60%～82%,optimum humidity was 78%;Humid and rainy climate was not propitious to the pest larvae growth,drought and high temperature could lead to severe disasters.Trichogramma closterae,T.dendrolimi,parasitic flies and granulosis virus are the important natural enemies,which could control the pest.