论文部分内容阅读
本文开展了五种药剂对雪茄烟斜纹夜蛾防治效果的研究。结果表明,生物类杀虫剂阿维菌素和棉铃虫核型多角体病毒对斜纹夜蛾的防治效果较好,药后10天,两者校正防效分别达到了85.4%和83.8%。生物类杀虫剂苜核.苏云菌和化学农药醚菊酯防效次之,药后10天校正防效分别为67.3%和66.6%。常规化学农药氯酰胺的防治效果不理想,最高校正防效仅为48.3%,且药效持久性较差,药后7天防治效果有所下降,之后维持在较低水平。
In this paper, five kinds of medicaments on cigar tobacco Spodoptera control effect. The results showed that the biocontrol agents avermectin and H. armigera nucleopolyhedrovirus had a better control effect against Spodoptera litura, and the corrected control efficacies reached 85.4% and 83.8% respectively 10 days after treatment. The biological control insecticides, alfalfa, thuringiensis and chemical pesticide ethamethine took the second place. The corrected control effect was 67.3% and 66.6% respectively after 10 days. The control effect of conventional chemical pesticides, chloramide, was not satisfactory. The highest corrected effect was only 48.3%, and the persistence of drug efficacy was poor. The control effect decreased after 7 days and remained at a low level afterwards.