沼液对韭菜迟眼蕈蚊的防治效果

Control effect of biogas slurry against Bradysia odoriphaga

通过室内选择性测定和田间试验,评价了沼液对韭菜迟眼蕈蚊的防治效果。结果表明,沼液对韭菜迟眼蕈蚊表现出一定的驱避活性,对幼虫的驱避率、拒食率分别达55.30%、53.81%,雌雄成虫选择反应率分别为33.2%、30.5%,对雌虫产卵驱避率为36.82%。田间试验结果表明,以沼液∶水(1∶1)处理幼虫、成虫,随着时间的延长防效逐渐提高,处理后45d防效达到最大,分别为43.16%、56.50%。

In order to evaluate the control effect of biogas slurry against Bradysia odoriphaga, adult and larvae choice tests and field trials were conducted. The results showed that biogas slurry had certain repellent activity to B. odoriphaga. After treatment with full dose of biogas slurry, the repellent rates and antifeedant rate of larvae were 55.30% and 53.81%, respectively, while response rates of the female and male adults were 33.2% and 30.5%, respectively, and the oviposition repellent rate was 36.82%. Field trials indicated the increasing control effects of biogas slurry and water mixture （1：1） on larvae and adult with the time, and it reached maximum 45 days after treatment with the efficacies of 43.16% and 56.50%, respectively.