| 施氮量对香料烟光合、蒸腾和水分利用效率的影响 |
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| 引用本文： | 李志伟,刘朝科,符云鹏,周琳,周显波,史双双,徐文姗,汤术开,罗维.施氮量对香料烟光合、蒸腾和水分利用效率的影响[J].中国烟草,2013(6):38-42,48. |
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| 作者姓名： | 李志伟 刘朝科 符云鹏 周琳 周显波 史双双 徐文姗 汤术开 罗维 |
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| 作者单位： | [1]川渝中烟工业有限责任公司物资供应中心,成都610017 [2]河南农业大学烟草学院,郑州450002 |
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| 基金项目： | 云南省烟草公司科技项目（08A15） |
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| 摘 要： | 为确定保山干旱环境下香料烟光合生理的适宜施氮量，试验研究了不同施氮量（75、60、45kg／hm2）对香料烟叶片光合蒸腾和水分利用效率特征的影响。结果表明，随施氮量增加，叶片气孔导度，胞间CO2浓度、蒸腾量降低，水分利用效率增加；单位叶面积所积累的干物质量以高施氮量最高，中等施氮量最低。试验表明，75kg／hm2的施氮量有助于降低香料烟蒸腾作用，提高水分利用效率，并获得较高的干物质量。
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| 关 键 词： | 香料烟 干旱 氮 光合生理 |
Effects of Nitrogen Rates on Photosynthesis,Transpiration, and Water Use Efficiency of Oriental Tobacco Leaves |
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| LI Zhiwei LIU Chaoke,FU Yunpeng,ZHOU Lin,ZHOU Xianbo,SHI Shuangshuang,XU Wenshan,TANG Shukai,LUO Wei.Effects of Nitrogen Rates on Photosynthesis,Transpiration, and Water Use Efficiency of Oriental Tobacco Leaves[J].China Tobacco,2013(6):38-42,48. |
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| Authors: | LI Zhiwei LIU Chaoke FU Yunpeng ZHOU Lin ZHOU Xianbo SHI Shuangshuang XU Wenshan TANG Shukai LUO Wei |
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| Affiliation: | 1. China Tobacco Chuanyu Industrial Co., Ltd., Chengdu 610017, China; 2. Tobacco College of Henan Agricultural University, Zhengzhou 450002, China) |
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| Abstract: | Effects of nitrogen rates on photosynthesis, transpiration and water use efficiency of oriental tobacco leaves in arid environment in Baoshan was studied in order to determine the optimum rate of nitrogen in arid environment. The results showed that stomatal conductance, intercellular CO2 concentration, transpiration rate decreased, and efficiency of water use increased with higher inorganic nitrogen fertilizer rates. The amount of dry matter accumulation per unit leaf area was largest with the highest nitrogen rate, and lowest with moderate nitrogen rate. Nitrogen rate of 75 kg/ha was most useful for lowering transpiration rate, improving its water use efficiency and getting a higher quality of dry matter. |
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| Keywords: | oriental tobacco leaves arid environment nitrogen rate photosynthesis |
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