| 不同玉米自交系氮效率的分析 |
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| 引用本文： | 关义新; 马兴林; 凌碧莹,向春阳. 不同玉米自交系氮效率的分析[J]. 玉米科学, 2004, 12(1): 100-102 |
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| 作者姓名： | 关义新 马兴林 凌碧莹,向春阳 |
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| 作者单位： | 1. 中国农业科学院作物育种栽培研究所,北京,100081
2. 黑龙江八一农垦大学,黑龙江,大庆,158308 |
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| 基金项目： | 本研究受国家科技"十五"攻关项目(2001BA507A,2001BA50CA)、北京市自然基金资助 |
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| 摘 要： | 试验在4个氮处理水平上对8个玉米自交系的氮效率进行了研究。结果表明,玉米自交系在产量、生物量和氮累积量上存在显著的差异。据氮效率分析,黄C属低氮、高氮处理下产量均较高的双高效型,340属低氮高效型自交系,00冬属高氮高效型自交系,C8605属低氮、高氮处理下产量均较低的双低效型自交系。通径分析表明,在3个施氮处理中氮吸收效率对氮效率的作用均大于氮利用效率对氮效率的作用,且低氮下吸收效率对氮效率的作用大,高氮下利用效率对氮效率的作用大。
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| 关 键 词： | 玉米 自交系 产量 氮效率 |
| 文章编号： | 1005-0906(2004)01-0100-03 |
| 收稿时间： | 2003-10-23 |
| 修稿时间： | 2003-10-23 |
Analysis on Nitrogen Use Efficiency of Different Maize Inbreds |
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| GUAN Yi-xin; MA Xing-lin; LING Bi-ying and XIANG Chun-yang. Analysis on Nitrogen Use Efficiency of Different Maize Inbreds[J]. Journal of Maize Sciences, 2004, 12(1): 100-102 |
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| Authors: | GUAN Yi-xin MA Xing-lin LING Bi-ying XIANG Chun-yang |
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| Abstract: | Eight maize inbreds were collected and evaluated for their NUE (nitrogen use efficiency)under four N rates.The result showed that significant difference existed among inbreds in grain yield,biomass and N uptake.According to NUE,huang C was belong to double high efficiency which presented high yield under both high and low nitrogen rate.340was high efficiency only in low N application,00dong was high efficiency only in high N application,C8605was belong to double low efficiency which presented low yield under both high and low nitrogen rate.Path analysis showed that the direct effect of N uptake contributed to NUE was bigger than that of N utilization under three N application levels,and The bigger effect contributed to NUE was N uptake in lower N and N utilization in high N. |
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| Keywords: | Maize Inbred Yield NUE |
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