噻虫啉、高效氯氰菊脂防治竹卵圆蝽试验

摘要

Experiments were conducted on toxic effect of thiacloprid and lambda-cyhalothrin on Hippotiscus dorsalis in bamboo forests of Anji,Zhejiang province.The results showed that the treatments of 200-fold of 2.0％ thiacloprid and 200-fold of 2.5％ lambda-cyhalothrin had the highest toxic effect,the corrected mortality reached 88.9％ and 92.8％.The insect density after two,seven and thirty days after application decreased 94.3％ and 93.0％.The field experiments showed that the insect density 30 days after application decreased respectively 90.0％ and 91.9％.%对2.0％噻虫啉触破式微胶囊和2.5％高效氯氟氰菊酯对竹卵圆蝽的毒杀效果进行试验,结果表明:2.0％噻虫啉触破式微胶囊水悬剂200倍液和2.5％高效氯氟氰菊酯触破式微胶囊水悬剂200倍液对竹卵圆蝽的毒杀活性均较高,校正死亡率分别达到88.9％和92.8％;施药2、7、30d后虫口密度最高分别下降了94.3％和93.0％;大田试验结果表明,施药30d后虫口密度显著下降,下降率分别达90.0％和91.9％.