论文部分内容阅读
通过不同剂量、不同药剂对比及防治适期试验,研究32%丙.氟EC防治水稻纵卷叶螟田间使用技术。结果表明:32%丙.氟EC对稻纵卷叶螟具有很强的杀虫活性,防效好于生产上其他同类药剂,且持效期特长,用药量为30 m l/667m2,药后30 d杀虫和保叶效果仍达到82.75%和78.93%,同时32%丙.氟EC对稻纵卷叶螟防治时期选择性较大,在蛾峰期、低龄幼虫高峰期和高龄幼虫高峰期同样具有很高的杀虫效果。
Through different dosages, comparison of different medicaments and control of proper period, 32% propanilide EC was used to control field use of rice leaf roller. The results showed that: 32% propyl fluoride had a strong insecticidal activity against Cnaphalocrocis medinalis, and its control effect was better than that of other drugs in the production. Its persistence potency was 30 ml / 667m2 and 30 d insecticidal and leaf-holding effect still reached 82.75% and 78.93%, while 32% of the propan-2-fluoride EC had a greater selectivity for the control of rice leaf roller. In the moth peak, young larvae peak and young larvae peak same Has a high insecticidal effect.