论文部分内容阅读
1989～1991年对增效杀灭菊酯进行了系统的研究。结果表明,在四种增效剂中以增效磷效果最好。增效杀灭菊酯对3龄粘虫幼虫的增效倍数为2.51,田间增效性试验也证明增效杀灭菊酯有明显的增效作用。田间小区试验,增效杀灭菊酯30～45克/公顷(有效成分,下同)防治小麦粘虫施药后1天效果达94.5～98.9％,与杀灭菊酯75～90克/公顷的防效相当;防治大豆蚜用量22.5,～37.5克/公顷,施药后5天防效达91.9～97.6％,与来福灵和乐果的效果基本相同。示范试验,增效杀灭菊酯用量30～60克/公顷防治小麦、玉米粘虫效果在97.3％以上。增效杀灭菊酯的使用成本只是杀灭菊酯的60％。
From 1989 to 1991, the efficacy of fenvalerate was systematically studied. The results showed that among the four synergists, synergistic effect was the best. Synergistic fenvalerate against 3rd instar larvae of armyworm synergistic ratio of 2.51, field synergy test also showed that synergistic fenvalerate has a significant synergistic effect. Field plot test, the efficacy of fenvalerate 30 ~ 45 g / ha (active ingredients, the same below) to control the wheat armyworm effect 1 day after application of 94.5-98.9%, and fenvalerate 75-90 g / ha The control effect of soybean aphid was 22.5 ~ 37.5 g / ha. The control effect reached 91.9 ~ 97.6% on the 5th day after application. The effect was the same as that of Laifuling and dimethoate. Demonstration test, the efficiency of fenvalerate dosage 30 ~ 60 g / ha control of wheat, armyworm effect of corn in more than 97.3%. Synergistic reduction of the use of pyrethrum is only about 60% of that of pyrethrum.