中带齿舟蛾生物学特性及防治

Bionomics And Prevention Of Odontosia Arnodiana(Kardakoff)

中带齿舟蛾(Odontosia arnodiana(Kardakoff))是危害白桦的主要林业有害生物之一,在内蒙古大兴安岭林区1的发生1代,以蛹在2～20cm枯枝落叶层中筑蛹室越夏越冬,于翌年4月下旬开始羽化,羽化高峰期在5月3～7日,成虫寿命平均为7天。5月上旬为产卵高峰期,5月下旬卵孵化,高峰期在5月30日～6月3日。孵化后幼虫开始危害,6月中旬为幼虫危害盛期。到7月上旬幼虫下树潜入枯枝落叶层下。化蛹高峰期7月19～25日。阿维菌素乳油喷烟防治,以药:柴油1:25为最佳配比,10天后的防治效果可达到89.63%以上,既高效又经济。0.9%阿维菌素和1.2%烟参碱不同浓度喷雾实验,防治后7天,0.9%的阿维菌素4000倍、1.2%烟参碱2000倍达到防治要求和经济效益最优结合点。

Odontosia arnodiana（Kardakoff） is one of the main forestry pest of do harm to birch.It occurred one generation per year in the Daxing anling of Inner mongolia.Pupae overwintered in layer of soil deep from 2 to 20 cm.The adult period emerged from the last ten days of April and the peak of adults emergence was at the first ten days of May,the average lifetime of adult is 7 days.The first ten days is the peak period of spawning.The eggs were hatched at the last ten days of May.The middle ten days of June is the peak period of grub damage.At the first ten days of July the grub enter into the forest floor.The best mix ratio of medicine and diesel oil is 1：25 when using avermectins oil-smoke agent and the effect can reach 89.63% after 10 days.In the spray test of 0.9% avermectins and 1.2% nicotine with different concentrations after 7 days,the optimization joint of prevention need and economy benefit is using 4000 times 0.9% avermectins and 2000 times 1.2% nicotine.