摘要
微红梢斑螟是为害马尾松的重要害虫之一，该虫在福建明溪１年发生３－ ４代，以幼虫越冬，幼虫５龄，卵期３－ ７天左右，幼虫期２４－ ３５天，越冬代１３８－ １６９天，蛹期１１－ １８天。选用４０％ 氧化乐果、８０％ 敌敌畏、５０％甲胺磷、４．５％ 氯氢菊酯、２０％ 杀灭菊脂等农药的不同浓度，采用拉丁方设计对微红梢斑螟进行防治试验。结果表明所选用的农药中８０％ 敌敌畏５００倍液、５０％ 甲胺磷５００倍液、４０％ 氧化乐果５００、１０００、１５００倍液，对３－ ５龄幼虫的防治效果都在８５％ 以上。２０％ 杀灭菊酯、８０％ 敌敌畏和柴油以２ｖ１ｖ５０或１ｖ２ｖ５０的比例混合，防治效果均在９０％ 以上。
Dioryctria splendidlla Hampson develops 3-4 generations a year and overwinters with larvae in Mingxi county, Fujian Province of China. The egg, larva and pupa stage lasts 3-7 days, 24-35 days and 11-18 days respectively. The control effect is more than 85% by these pesticides of 500×80% DDVP, 500×50% methamidophos and 500×, 1000×and 1500×omethoate, respectively. The control effect of the pesticide mixed by 20% fenvalerate, 80% DDVP and diesel oil in proportion as 2∶1∶50 or 1∶2∶50 is more than 90% respectively.
出处
《华东昆虫学报》
1999年第2期61-64,共4页
Entomological Journal of East China
