摘要
葱须鳞蛾在潍坊地区年发生5～6代,以成虫越冬。3月中下旬越冬成虫开始活动、产卵,4月上旬一代幼虫开始为害,5月中下旬出现一代成虫。发生适宜温度为13～24℃,世代发育始点温度为7.1±1.7℃,有效积温为527.2±49.9日度。防治始期为幼虫初孵盛期,以一代和五、六代为关键防治时期。40.7%乐斯本乳油、50%地亚农乳油1000～2000倍液或50%辛硫磷乳油1000～1500倍液,亩喷100公斤,防治效果为92.2～99.27%。
Acrolepia alliella Meyrick propagates 5-6 generations a year, and overwinters in adult form. The adults begin moving about and laying eggs in the second ten days or the last ten days of March next year. The larvae of the first generation begin to damage fragrant-flowered garlic in the first ten days of April, and the adults of the first generation appear in the second ten days or the last ten days of May. The optimal temperature for developing ranges 13-24°C, although it starts to develop at 7. 1±1. 7°C, and the effective accumulative temperature is 527. 2±49. 9 degree-days. The suitable controlling time is when most larvae begin to be hatched. It is the key to control the pest insect of the 1st, 5th and 6th generations. A preparation of Losban 40. 7EC,Diazinon 50EC,or Phoxim 50EC, diluted to 1000-1500 times with water and sprayed at 100kg per mu, gives controlling results from 92. 2 to 99. 27%.
出处
《山东农业科学》
1991年第5期7-10,共4页
Shandong Agricultural Sciences
关键词
葱须鳞蛾
生物学
防治
韭菜
害虫
Arolepia alliella Meyrick
biological characters
control
