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| 生长后期不同断根及追钾对云南烤烟含钾量的影响 | |
| 引用本文： | 冀宏杰,李春俭,张福锁,洪丽芳,张 俊.生长后期不同断根及追钾对云南烤烟含钾量的影响[J].中国生态农业学报,2004,12(1):83-86. |
| 作者姓名： | 冀宏杰 李春俭 张福锁 洪丽芳 张 俊 |
| 作者单位： | 1. 中国农业大学植物营养系,农业部植物营养学重点开放实验室,北京,100094 2. 云南省农业科学院,昆明,650231 3. 云南省曲靖市麒麟区土肥监测站,曲靖,655000 |
| 基金项目： | 云南省省院省校合作项目与国家自然科学基金项目(30070452)共同资助 |
| 摘 要： | 田间试验研究生长后期不同断根及追钾对云南烤烟含K量的影响结果表明 ,不同断根时间、断根部位和断根数量以及断根时追K与否及追施K素的形态等均对烤烟烟叶含K量的影响不同 ,烟株生长后期实施断根和追施K肥等措施可提高根系吸收活力和增加烟叶含K量。其中打顶时断根同时追施速效钾肥为最佳处理 ,其烟株各部位叶片含K量和上部叶片干物质量增幅最高 ,且易于实际操作。 |
| 关 键 词： | 断根 追K 烤烟 含K量 |
| 收稿时间： | 2002/11/26 0:00:00 |
| 修稿时间： | 2002年11月26 |
Effcts of different cutting-roots and K top-dressing measures at later growth stage on K-oncentration in leaves of fluecured tobacco plants in Yunnan Province |
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| JI Hong-Jie,LI Chun-Jian,ZHANG Fu-Suo,HONG Li- Fang and ZHANG Jun.Effcts of different cutting-roots and K top-dressing measures at later growth stage on K-oncentration in leaves of fluecured tobacco plants in Yunnan Province[J].Chinese Journal of Eco-Agriculture,2004,12(1):83-86. | |
| Authors: | JI Hong-Jie LI Chun-Jian ZHANG Fu-Suo HONG Li- Fang and ZHANG Jun |
| Abstract: | The effects of different cutting-roots and K top-dressing measures at later growth stage on K concentration in leaves of flue-cured tobacco plants were studied. The results demonstrate that cutting-root and increasing application of K can stimulate the formation of new roots and then their uptake activity. Considering both the K content and the leaf dry weight, the best measure is cutting-roots on the position 20 cm away from the stem base and simultaneously the top-dre- ssing with K_2SO_4 when plants are decapitated. |
| Keywords: | Cutting roots K top-dressing Flue-cured tobacco K concentration |
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