| 施氮量对利民33光合特性及产量的影响 |
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| 引用本文： | 郑金玉,罗洋,郑洪兵,李瑞平,李伟堂,刘武仁.施氮量对利民33光合特性及产量的影响[J].玉米科学,2014,22(2):135-138. |
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| 作者姓名： | 郑金玉 罗洋 郑洪兵 李瑞平 李伟堂 刘武仁 |
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| 作者单位： | 吉林省农业科学院农业资源与环境研究所, 长春 130033;吉林省农业科学院农业资源与环境研究所, 长春 130033;吉林省农业科学院农业资源与环境研究所, 长春 130033;吉林省农业科学院农业资源与环境研究所, 长春 130033;吉林省农业科学院农业资源与环境研究所, 长春 130033;吉林省农业科学院农业资源与环境研究所, 长春 130033 |
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| 基金项目： | 国家科技支撑计划项目（2011BAD16B10，2012BAD04B02） |
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| 摘 要： | 在大田试验条件下设氮肥用量分别为N0（不施氮肥）、施氮120（N120）、200（N200）、280（N280）和360 kg/hm2（N360）5个处理，测定叶面积和叶绿素含量、净光合速率（Pn）、气孔导度（Gs）、胞间二氧化碳浓度（Ci）、蒸腾速率（Tr）和产量，探讨不同施氮量对利民33光合特性及产量的影响。研究结果表明，随施氮量的增加，利民33叶面积指数、叶绿素含量、净光合速率、光能利用率提高，进而提高产量；产量与净光合速率、气孔导度、蒸腾速率和光能利用率呈正相关，与胞间二氧化碳浓度呈负相关；产量与施氮量的回归方程为Y=-0.05x2+32.38x+6 351（R2=0.98），最高产量施氮量为335.9 kg/hm2。
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| 关 键 词： | 玉米 施氮量 利民33 光合特性 产量 |
| 收稿时间： | 2013/1/10 0:00:00 |
Effects of Nitrogen Fertilizer Rate on Photosynthesis and Yield of Limin33 |
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| ZHENG Jin-yu,LUO Yang,ZHENG Hong-bing,LI Rui-ping,LI Wei-tang and LIU Wu-ren.Effects of Nitrogen Fertilizer Rate on Photosynthesis and Yield of Limin33[J].Journal of Maize Sciences,2014,22(2):135-138. |
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| Authors: | ZHENG Jin-yu LUO Yang ZHENG Hong-bing LI Rui-ping LI Wei-tang and LIU Wu-ren |
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| Institution: | Institute of Agricultural Resources and Environment, Jilin Academy of Agricultural Sciences, Changchun 130033, China;Institute of Agricultural Resources and Environment, Jilin Academy of Agricultural Sciences, Changchun 130033, China;Institute of Agricultural Resources and Environment, Jilin Academy of Agricultural Sciences, Changchun 130033, China;Institute of Agricultural Resources and Environment, Jilin Academy of Agricultural Sciences, Changchun 130033, China;Institute of Agricultural Resources and Environment, Jilin Academy of Agricultural Sciences, Changchun 130033, China;Institute of Agricultural Resources and Environment, Jilin Academy of Agricultural Sciences, Changchun 130033, China |
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| Abstract: | In order to investigate the effects of nitrogen application rate on leaf photosynthetic characteristics and yield of maize Limin33, the field experiment with five N levels(N0, N120, N200, N280, N360) was carried out, and photosynthetic indexes of leaf area(LA), chlorophyll content, photosynthetic rate(Pn), stomatal conductance(Gs), internal CO2 concentration(Ci), transpiration rate(Tr) and maize yield were determined. The results showed that leaf area index(LAI), chlorophyll content, Pn, light use efficiency(LUE) were improved with increasing of nitrogen fertilizer rate, and the yield showed a similar trend. There showed positively relationships between maize yield and Pn, Gs, Tr and LUE, respectively, and negative relationships between maize yield and Ci. The regression equation between yield and nitrogen application rate was: Y=-0.05x2+32.38x+6 351(R2=0.98), through regression analysis, the nitrogen application rate under the maximum yield could be conducted of 335.9 kg/ha. |
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| Keywords: | Maize Nitrogen fertilizer rate Limin33 Photosynthesis Yield |
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