5种不同药剂对甜菜夜蛾田间药效试验

Field Efficacy Test of Five Different Pesticides against Spodoptera exigua

摘要: 本试验选用了5种杀虫机制不同的高效低毒药剂进行生菜上甜菜夜蛾的田间药效试验，结果表明：试验所用5种杀虫剂对生菜上的甜菜夜蛾均有一定防效。药后1 d，供试5种药剂的防效均达最高值，都具有速效杀虫性。药后7 d，200 g/L氯虫苯甲酰胺悬浮剂、10.5%三氟甲吡醚乳油、300亿PIB/g甜菜夜蛾核型多角体病毒水分散粒剂3种药剂仍表现出较好的持效性，防效仍可达89%以上，且对生菜无不良影响。

Abstract: In this experiment, five insecticides with different insecticidal mechanisms with high efficiency and low toxicity were selected for the field efficacy test of Spodoptera exigua on lettuce. The results showed that the five insecticides used in the experiment had certain control effect on Spodoptera exigua on lettuce. One day after the treatment, the control effect of the five pesticides reached the highest level, meaning that they all can kill pests quickly. Seven days after the treatment, three of them, 200 g/L chlorantraniliprole SC, 10.5% trifluoromethane EC and 30 billion PIB/g Spodoptera exigua Nucleopolyhedrosis virus WG, were still doing well with more than 89% control effect, and even had no adverse effect on lettuce.