落叶松鞘蛾防治及分析
2016-06-25王伟司宏图宣立辉谷建才
王伟 司宏图 宣立辉 谷建才

摘 要:为了探讨落叶松鞘蛾的防治效果,在河北省塞罕坝机械林场选择了虫害比较严重的地点,采用5点法进行取样,用4.5%氯氰菊酯、0.9%阿维菌素、25%灭幼脲、1.2%烟参碱,4种不同药剂进行对比试验进行防治,运用数表相结合的分析方法进行讨论。研究结果表明:4.5%氯氰菊酯、0.9%阿维菌素、25%灭幼脲、1.2%烟参碱,防治效果分别为:97.75%、94.30%、93.85%、86.75%;防治效果最好达到97.75%。对4种药剂的3种不同稀释倍数进行分析,虽稀释倍数各有不同,但明显可以看出4.5%氯氰菊酯的防治效果是最好的。
关键词:落叶松鞘蛾;氯氰菊酯;阿维菌素;灭幼脲;烟参碱
中图分类号 S763 文献标识码 A 文章编号 1007-7731(2016)11-0100-02
Control and Analysis of Larch Casebearers
Wang Wei1 et al.
(1Weichang County of Chengde City,Chengde 067000,China)
Abstract:In order to investigate the preventive and therapeutic effects of larch casebearers,in Saihanba mechanical forest farm of Hebei Province,more serious pest locations were chosen,5 points method was adopted to improve the sampling,which was with 4.5% cypermethrin,0.9% abamectin,25%show urea,1.2% smoke alkali and four different reagents was carried out to do contrast experiment for prevention and control. And then using the method combining the analysis of the table for discussion. The results showed that the control effects of 4.5% cypermethrin,0.9% abamectin,25% show urea and 1.2% smoke alkali were97.75%,94.30%,93.85% and 86.75%; The best control effect reached 97.75%. Three different dilution ratio on four kinds of agents was analyzed,and the dilution ratio was different,but clearly showed that the control effect of 4.5% cypermethrin was the best.
Key words:Larch casebearers; Cypermethrin; Avermectin; Diflubenzuron; Matrine smoke
落叶松鞘蛾Coleophora spp.属鳞翅目Lepidoptera,鞘蛾科Coleophoridae,全世界记录6种,主要分布于欧洲、美洲、亚洲的北温带和亚寒带地区,是落叶松的重要害虫。其中以欧洲落叶松鞘蛾Coleophora laricella(Hǜbner)最为著名。我国分布3种,即兴安落叶松鞘蛾Coleophora dahurica Flkv,主要分布于东北3省和内蒙古的东部,大兴安岭,小兴安岭一带;新疆落叶松鞘蛾C.sibiricella Falkovitsh分布于西北的新疆一带[1];华北落叶松鞘蛾C.sinensis Yang分布于华北地区的山西、河北、内蒙古和河南等省份[2]。兴安落叶松鞘蛾是落叶松的主要害虫之一,以幼虫取食落叶松针叶。落叶松鞘蛾1a发生1代,以幼虫取食落叶松叶肉,大发生时针叶被蚕食70%以上,林分一片枯黄,严重影响林木生长和种实产量。成虫从6月上旬至7月上旬均可见到羽化,持续期约为1个月[3]。5月上旬开始危害落叶松嫩芽,下旬危害较重,6月上旬为产卵盛期,6月中旬新孵幼虫直接咬穿卵壳底部侵入叶内为害。……
