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研究了20%甲维·茚虫威悬浮剂于2地防治稻纵卷叶螟的试验效果。结果表明,20%甲维·茚虫威悬浮剂150、180 g/hm2处理药后19 d,在江苏睢宁县试验点对稻纵卷叶螟的保叶效果为71.0%、82.1%,杀虫效果为79.0%、88.7%;在江苏里下河地区农业科学研究所试验点保叶效果为84.5%、90.5%,杀虫效果为87.1%、93.6%,表明20%甲维·茚虫威悬浮剂在这2个剂量下对稻纵卷叶螟具有较好的防治效果,适宜大面积生产推广应用。生产上建议于稻纵卷叶螟初孵幼虫盛期至1龄高峰期以150~180 g/hm2兑水600~750 kg/hm2均匀喷雾,如果虫量较大则适当增加药液剂量;若需多次用药防治,则应选择与其他药剂轮换使用。
The effect of 20% carbaryl indoxacarb on the prevention and control of rice leaf roller was studied. The results showed that the leaf-holding effect on the rice leaf roller was 71.0% and 82.1% at the test point of Suining County, Jiangsu Province, 19 d after treatment with 150,180 g / hm2 20% carbaryl indoxacarb. The effect was 79.0% and 88.7% respectively. The leaf-holding effect was 84.5% and 90.5% at the Lixiahe Institute of Agricultural Science in Jiangsu Province, and the insecticidal effect was 87.1% and 93.6%, respectively, indicating that the 20% Agent in these two doses of rice leaf roller has good control effect, suitable for large-scale production and application. It is recommended that the spray should be uniformly sprayed at 150-180 g / hm2 against 600-750 kg / hm2 of freshwater larvae during the peak to the first instar peak, Need to repeatedly medication prevention and treatment, you should choose to rotate with the use of other drugs.