摘要
淡剑袭夜蛾 (Sidemia depravata Butler)在山东草坪草上 1年发生 4～ 5代 ,危害盛期在 7～ 8月。田间发生量以冷季型草托亚黑麦草上最多 ,猎狗高羊茅和午夜早熟禾次之 ,暖季型草狗牙根上最少。 4种草坪草品种对其幼虫发育历期、雌雄蛹重、单雌产卵量和存活率均有影响 ,但对蛹期影响不大。管理措施对幼虫的发生量有显著影响 ,以长势好、田间湿度大、刈草不及时的地块发生重。拟除虫菊酯类的夜蛾必杀和高效氯氰菊酯 ,有机磷类的敌百虫、辛硫磷和喹硫磷对该虫都很敏感 ,在常用浓度下防效均达 95 %以上。 Bt乳剂和灭幼脲 3号对低龄期幼虫防治效果高 。
Sidemia depravata occured 4~5 generations one year in Shandong Province and the harmful peak period was about in July and August. Its population was the largest in the perenial ryegrass fields, followed in tall fescue and kentucky bluegress fields, and the smallest in Bermudagrass fields.The different grass varieties had evident effects on larval development duration, pupal weight of male and female, fecundity and survival rate, but only had little effect on pupal period. The management techniques had evident effect on the pest population, and the pest developed relatively larger population in the fields with grass growing well, higher humidity and not timely clipping. The pest was susceptible to synergistic alphacypermethrin, alphacypermethrin, trichlorphon, phoxim and quinalphos, with their control effect higher than 95%. Bt EO and mieyouniao had rather effective to the yang larvae, but their fast effect is not good.
出处
《华东昆虫学报》
2002年第1期68-72,共5页
Entomological Journal of East China
基金
胜利油田管理局科委资助项目
关键词
草坪
害虫
淡剑袭夜蛾
生物学
防治技术
Sidemia depravata Butler, biology, grass variety, growth and development, insecticide control
