柑桔潜叶蛾的为害习性与防治策略

柑桔潜叶蛾是为害柑桔叶片的重要害虫。上海地区一年发生8～9代,以蛹和幼虫在桔叶片上越冬。幼虫于6月15日开始为害,8月15日至9月20日是幼虫为害盛期。在7月26日前做好夏季剪梢工作。可以压低虫口密度。8月1日起每隔7～10天喷撒1次农药,连续3～4次,可以控制为害。

STUDIES ON THE INJURY AND CONTROL TACTICS OF PHYLLOCNISTIS CITRELLA STAINTON

Phyllocnistis citrella Stainton is a very prevalent pest causing serious damage on the citrus leaves.It overwinters on leaves as pupae or larvae There are 8-9 ge- nerations annually in Shanghai by June 15 the larvae begin to cause the damage and reach a climax between August 15 and Sept.20. For control,it is advisable to take a good logging in summer in order to decrease the density of insect population In addition,by spraying insecticides once every 9 to 10 days and repeating 3 to 4 times,this insect pest can be well controlled