| 施氮时期对寒地水稻产量构成因素的影响 |
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| 引用本文： | 姜佰文,罗盛国,彭显龙.施氮时期对寒地水稻产量构成因素的影响[J].东北农业大学学报,2004,35(3):290-292. |
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| 作者姓名： | 姜佰文 罗盛国 彭显龙 |
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| 作者单位： | 东北农业大学资源与环境学院,黑龙江,哈尔滨,150030 |
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| 摘 要： | 不同时期施氮对水稻产量构成因素的试验研究表明,施氮时期对穗数型水稻有效穗数影响显著,有效穗数与产量有很好的相关性(r=0.9770)。千粒重是影响其产量的主导因子,而对结实率影响不大。结实率是影响大穗型水稻产量的主导因子,施氮时期对其结实率影响差异显著,对千粒重影响差异不显著。
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| 关 键 词： | 施氮时期 水稻 有效穗数 千粒重 结实率 |
| 文章编号： | 1005-9369(2004)03-0290-03 |
| 修稿时间： | 2003年11月13 |
The effect of nitrogen application time on yield factor in cold region |
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| JIANG Bai-wen,LUO Sheng-guo,PENG Xian-long.The effect of nitrogen application time on yield factor in cold region[J].Journal of Northeast Agricultural University,2004,35(3):290-292. |
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| Authors: | JIANG Bai-wen LUO Sheng-guo PENG Xian-long |
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| Abstract: | The research results indicated that the effect of nitrogen application time on effective spike formation of multiple-spike variety was significant, but for the big-spike variety, this effect was not significant. There is a good relationship between effective spike and yield. The effects of nitrogen application time on seed rates and 1 000-grain weight of two rice varieties were completely different. Seed rate is the leading factor of big-spike rice, whereas 1 000-grain weight is the leading factor of multiple-spike rice . |
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| Keywords: | N-application time rice effective spike 1 000-grain weight seed rate |
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