| 优化施肥对大豆氮素积累及产量的影响 |
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| 引用本文： | 王海艳,孙超,罗盛国,刘元英.优化施肥对大豆氮素积累及产量的影响[J].东北农业大学学报,2012,43(4):11-15. |
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| 作者姓名： | 王海艳 孙超 罗盛国 刘元英 |
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| 作者单位： | 东北农业大学资源与环境学院,哈尔滨,150030 |
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| 基金项目： | 哈尔滨市科技攻关项目，东北农业大学创新基金 |
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| 摘 要： | 采用大田试验方法,在两种密度(28、33万株.hm-2)条件下,研究了优化施肥对大豆不同器官的含氮量、氮积累量及产量的影响。结果表明,优化施肥显著提高了大豆植株R6期的含氮量,在高密度条件下,叶片含氮量提高了10.6%,茎秆含氮量提高了11.3%(P<0.05)。优化施肥显著增加了R2~R6阶段的氮素积累,其中R4~R6阶段高密度条件下氮积累量提高了41.4%(P<0.01)。R2~R6阶段的氮素积累与产量呈显著正相关。高密度条件下,优化施肥的产量比常规施肥提高了10.5%(P<0.05)。
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| 关 键 词： | 大豆 优化施肥 氮积累 产量 |
Effect of optimized fertilization on N accumulation and yield of soybean |
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| WANG Haiyan
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SUN Chao
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LUO Shengguo
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LIU Yuanying.Effect of optimized fertilization on N accumulation and yield of soybean[J].Journal of Northeast Agricultural University,2012,43(4):11-15. |
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| Authors: | WANG Haiyan SUN Chao LUO Shengguo LIU Yuanying |
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| Institution: | (College of Resources and Environmental Sciences,Northeast Agricultural University,Harbin 150030,China) |
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| Abstract: | A field experiment with the densities of 28 and 33 million plants·hm-2 was conducted to study the effects of optimized fertilization on N content,accumulation as well as the yield of soybean.The results showed that optimized fertilization significantly increased N content in soybean plants at R6 stage.N content under optimized fertilization with high density increased by 10.6%(P<0.05) in leaves and 11.3%(P<0.05) in stems,respectively.Optimized fertilization significantly enhanced N accu-mulation in the period of R2 to R6.N accumulation in the period of R4 to R6 increased by 41.4%(P<0.01) under the condition of high density.A positive correlation was observed between N accumulation in the period of R2 to R6 and soybean yield.The yield of optimized fertilization increased by 10.5%(P<0.05) compared to the control with high density. |
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| Keywords: | soybean optimized fertilization N accumulation yield |
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