| 剪叶程度对烤烟漂浮苗根系生长及生理特征的影响 |
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| 引用本文： | 陈丽莉,孟琳,方角,石俊雄,龙明锦. 剪叶程度对烤烟漂浮苗根系生长及生理特征的影响[J]. 贵州农业科学, 2012, 40(5): 36-38,42 |
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| 作者姓名： | 陈丽莉 孟琳 方角 石俊雄 龙明锦 |
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| 作者单位： | 1. 贵州省烟草科学研究所,贵州贵阳,550081
2. 长江大学农学院,湖北荆州,434025 |
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| 基金项目： | 贵州省烟草专卖局公司项目 |
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| 摘 要： | 为了研究不同剪叶程度对烤烟漂浮苗根系生长和生理特征的影响,以烤烟品种K326为材料,进行了剪叶面积1/3、1/2、2/3和不剪叶的烤烟漂浮育苗试验。结果表明,剪叶可抑制烟苗茎生长过高,促进根的生长发育;剪叶面积为1/3～1/2时,根的总根长、根表面积、根体积、根系平均直径和二级侧根数均显著高于不剪叶(根长和根体积除外)和剪叶面积为2/3的处理,烟苗根系活力、叶片叶绿素含量和可溶性糖含量均有显著提高
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| 关 键 词： | 烤烟 剪叶 根系生长 生理特征 漂浮育苗 |
Effects of Leaf-cutting Level on Root Development and Physiological Characteristics of Flue-cured Tobacco Seedlings in Floating System |
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| CHEN Li-li , MENG Lin , FANG Jiao , SHI Jun-xiong , LONG Ming-jin. Effects of Leaf-cutting Level on Root Development and Physiological Characteristics of Flue-cured Tobacco Seedlings in Floating System[J]. Guizhou Agricultural Sciences, 2012, 40(5): 36-38,42 |
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| Authors: | CHEN Li-li MENG Lin FANG Jiao SHI Jun-xiong LONG Ming-jin |
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| Affiliation: | 1(1.Guizhou Tobacco Research Institute,Guiyang,Guizhou 550081;2.Agricultural College,Yangtze University,Jingzhou,Hubei 434205,China) |
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| Abstract: | To explore the effects of different leaf-cutting level on root development and physiological characters of flue-cured tabacco seedlings in floating system,taking K326 as experimental material,leaf-cutting experiments were carried out.The results indicated that the effect of clipping off the 1/3~1/2 total leaf area was the best.The total root length,root superficial area,root volume,average root diameter and second-order lateral roots were higher than that of no-clipping and leaf-cutting 2/3 treatments,respectively.And the root activity,chlorophyll content and soluble sugar content were also increased significantly. |
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| Keywords: | flue-cured tobacco leaf-cutting root development physiological characteristics floating system |
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