摘要
研究1%蛇床子素粉剂在5种处理浓度下对3种储粮害虫谷蠹Rhizopertha dominica Fabricius、玉米象Sitophilus zeamai Motschulsky和赤拟谷盗Tribolium castaneum Herbst的防治效果。室内毒力测定结果表明,按有效成分0.5mg/kg(蛇床子素:粮食)浓度处理粮食,7d后,粮食中谷蠹、玉米象和赤拟谷盗的校正死亡率分别为97.78%、100%、86.70%,防治效果优于对照药剂防虫磷和谷虫净。将药剂处理4个月后的粮食进行接虫试验,15d后谷蠹和玉米象的防治效果仍可达100%,达到储粮害虫防治要求。
Five concentrations of insecticide solutions prepared from 1% Osthol powder against three stored-grain pests Rhizopertha dominica, Sitophilus zeamais and Tribolium castaneum was studied. The results showed that the mortalities of R. dominica, S. zeamais, and T. castaneum respectively were 97.78%, 100%, and 86.70% respectively after 7 days at the spraying ratio of 0.5 mg/kg（Osthol： grain） . The control effect of 1% Osthol Powder was superior to the pesticides malathion and grain borer. Four months after the treatment of the Osthol Powder, the live R. dominica and S. zeamais were injected into the grain mixed with 1% Osthol Powde, and the mortalities of the insects were found to be 100% on day 15 after the administration, which is qualified to prevent pests in grain storage.
出处
《昆虫知识》
CSCD
北大核心
2009年第4期587-591,共5页
Entomological Knowledge
基金
国家“十一五”国家科技支撑计划项目(2006BAD02A18-01)
关键词
蛇床子素粉剂
死亡率
谷蠹
玉米象
赤拟谷盗
Osthol powder, mortality, Rhizopertha dominica, Sitophilus zeamais, Tribolium castaneum
