针对剪叶传播病毒病影响烟苗质量的实际,采取大区对比试验方法,开展漂浮育苗少剪叶锻苗技术研究。结果表明:烟苗素质基本一致的前提下,烟苗封盘第1次剪叶后按照100 mg/kg浓度喷施烯效唑能有效控制烟苗徒长,增加茎围和叶片内叶绿素含量,减少剪叶次数和病害传播几率,增加根冠比,提高烟苗质量,培育无病健壮烟苗。 In view of the fact that cutting leaf-transmitted virus disease affects the quality of tobacco seedlings, a comparative study of large areas was carried out to study the technology of floating cut seedlings. The results showed that under the premise of basically the same quality of tobacco seedlings, spraying the uniconazole at the concentration of 100 mg / kg after the first leaf cutting of tobacco seedlings could effectively control the tobacco plantlet growth, increase the chlorophyll content in the stems and leaves, and reduce Cut the number of leaves and disease propagation probability, increase the ratio of root to shoot, improve the quality of tobacco seedlings, nurturing disease-free robust tobacco seedlings.