| 施氮量对复播青贮玉米光合特性和产量的影响 |
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| 引用本文： | 王久龙,王振华,李文昊,裴磊,赵波,扁青永,朱延凯. 施氮量对复播青贮玉米光合特性和产量的影响[J]. 干旱地区农业研究, 2017, 35(5): 250-255 |
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| 作者姓名： | 王久龙 王振华 李文昊 裴磊 赵波 扁青永 朱延凯 |
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| 作者单位： | College of Water ＆ Architectural Engineering, Shihezi University, Shihezi, Xinjiang 832000, China; Corps Key Laboratory of Modern Water-saving Irrigation, Shihezi, Xinjiang 832000, China,College of Water ＆ Architectural Engineering, Shihezi University, Shihezi, Xinjiang 832000, China; Corps Key Laboratory of Modern Water-saving Irrigation, Shihezi, Xinjiang 832000, China,College of Water ＆ Architectural Engineering, Shihezi University, Shihezi, Xinjiang 832000, China; Corps Key Laboratory of Modern Water-saving Irrigation, Shihezi, Xinjiang 832000, China,College of Water ＆ Architectural Engineering, Shihezi University, Shihezi, Xinjiang 832000, China; Corps Key Laboratory of Modern Water-saving Irrigation, Shihezi, Xinjiang 832000, China,College of Water ＆ Architectural Engineering, Shihezi University, Shihezi, Xinjiang 832000, China; Corps Key Laboratory of Modern Water-saving Irrigation, Shihezi, Xinjiang 832000, China,College of Water ＆ Architectural Engineering, Shihezi University, Shihezi, Xinjiang 832000, China; Corps Key Laboratory of Modern Water-saving Irrigation, Shihezi, Xinjiang 832000, China and College of Water ＆ Architectural Engineering, Shihezi University, Shihezi, Xinjiang 832000, China; Corps Key Laboratory of Modern Water-saving Irrigation, Shihezi, Xinjiang 832000, China |
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| 基金项目： | 国家科技支撑计划项目(2015BAD20B03) |
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| 摘 要： | 采用田间试验方法,研究了一管两行(80+40)行距模式下灌溉量为288 mm时,不同施氮量(CK~14.04 kg·hm~(-2),F1~97.56 kg·hm~(-2),F2~167.16 kg·hm~(-2),F3~236.76 kg·hm~(-2),F4~306.36 kg·hm~(-2),F5~375.96 kg·hm~(-2))对复播青贮玉米光合特性的影响,观测了拔节期(08.20)和抽雄吐丝期(09.13)光合特性指标及生育期末期的干物质量、叶面积,计算叶片水平的水分利用效率、光合势及净同化率。施氮量为236.76 kg·hm~(-2),青贮玉米产量最大;拔节期光合有效辐射为1 500~2 000μmol·m~(-2)·s~(-1)、施氮量为236.76 kg·hm~(-2)时,青贮玉米的光合指标较大;抽雄吐丝期,光合有效辐射为800~1 900μmol·m~(-2)·s~(-1)、施氮量为236.76 kg·hm~(-2)时,水分利用效率较大;施氮量为236.76~306.36 kg·hm~(-2)时,青贮玉米的光合势和净同化率均达到最大,施氮量进一步增加,光合势和净同化率降低显著。因此,石河子地区青贮玉米适宜的光合有效辐射为1 500~2 000μmol·m~(-2)·s~(-1),施氮量为236.76 kg·hm~(-2),青贮玉米产量及水分利用效率达到最大。
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| 关 键 词： | 施氮量；复播青贮玉米；光合特性；产量 |
Effects of nitrogen application rate on photosynthetic characteristics and yield of silage maize |
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| WANG Jiu-long,WANG Zhen-hu,LI Wen-hao,PEI Lei,ZHAO Bo,BIAN Qing-yong,ZHU Yan-kai. Effects of nitrogen application rate on photosynthetic characteristics and yield of silage maize[J]. Agricultural Research in the Arid Areas, 2017, 35(5): 250-255 |
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| Authors: | WANG Jiu-long WANG Zhen-hu LI Wen-hao PEI Lei ZHAO Bo BIAN Qing-yong ZHU Yan-kai |
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| Abstract: | |
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| Keywords: | N application multiple cropping silage maize photosynthetic characteristics yield |
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