| 氮肥运筹对机插水稻产量形成的影响 |
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| 引用本文： | 彭长青,李世峰,钱宗华,徐长青,吴九林,周宇. 氮肥运筹对机插水稻产量形成的影响[J]. 安徽农业科学, 2005, 33(12): 2275-2276,2297 |
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| 作者姓名： | 彭长青 李世峰 钱宗华 徐长青 吴九林 周宇 |
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| 作者单位： | 江苏省南通市作物栽培技术指导站,江苏,南通,226006;江苏省如东县作物栽培技术指导站,江苏,如东,226400 |
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| 基金项目： | 江苏省十五重点攻关项目（BE2001329）;南通师范学院苏东所课题（03SD005）;南通市青年学术带头人项目（Z3005）. |
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| 摘 要： | 在大田栽培条件下,研究氮肥运筹对机插水稻产量形成的影响。结果表明:施氮量324 kg/hm2、基蘖肥∶穗肥=64∶的处理产量最高;在提高基蘖肥施用量的基础上配合施用穗肥有利于提高产量;单位面积总颖花量的显著增加是机插水稻产量增加的主要原因,而颖花量的增加主要与穗数的提高有关;拔节、齐穗、成熟期LAI显著增加是机插水稻干物质累积量显著增加的主要原因。
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| 关 键 词： | 水稻 机插 氮肥 产量 |
| 文章编号： | 0517-6611（2005）12-2275-02 |
| 收稿时间： | 2005-08-29 |
| 修稿时间： | 2005-08-29 |
Effect of Nitrogen Application on Yield Formation of Machine Transplanted Rice |
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| PENG Chang- qing et al. Effect of Nitrogen Application on Yield Formation of Machine Transplanted Rice[J]. Journal of Anhui Agricultural Sciences, 2005, 33(12): 2275-2276,2297 |
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| Authors: | PENG Chang- qing et al |
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| Affiliation: | Crop Cultivation Technology Station of Nantong City, Nantong,Jiangsu 226006 |
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| Abstract: | The effects of nitrogen application on yield formation of rice transplanted by machine were studied.Results showed that the yield increased significantly when nitrogen application was increased.To produce much higher yield,the suitable ratio of basic panicle to N fertilizer was 6∶4 with N 324 kg/hm2.Increasing basic fertilizer as well as adding some panicle fertilizer would enhance yield.Sink capacity and panicle per unit area were increased,which caused the yield enhanced significantly.Leaf area index(LAI) improved in elongation,full heading and maturing period,which was the primary cause of dry matter accumulation enhanced. |
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| Keywords: | Rice Machine transplanted Nitrogen fertilizer Yield |
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