| 氮肥运筹及密度对中优752干物质生产及运转的影响 |
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| 引用本文： | 田智慧,潘晓华.氮肥运筹及密度对中优752干物质生产及运转的影响[J].江西农业学报,2008,20(7):1-6. |
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| 作者姓名： | 田智慧 潘晓华 |
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| 作者单位： | 1. 江西农业大学,江西,南昌,330045;北京市顺义区北务中学,北京,101300
2. 江西农业大学,江西,南昌,330045 |
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| 基金项目： | 国家粮食丰产科技工程项目
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江西省科技厅科技攻关项目 |
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| 摘 要： | 以三系籼型杂交中稻中优752为材料,研究了氮肥运筹及密度对中优752干物质生产及运转的影响。结果表明：增施氮肥、增加中后期的施氮比例及降低密度均可提高抽穗期的茎鞘干重和抽穗期茎鞘储存物质的转运;有利于叶片光合碳同化产物向蔗糖的转化及蔗糖的输出;有利于减缓叶片的衰老、提高抽穗后的干物质生产量。
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| 关 键 词： | 杂交水稻 中优752 氮肥运筹 密度 干物质生产与运转 |
Effects of Nitrogen Application and Planting Density on Production and Translocation of Dry Matter in Zhongyou 752 |
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| TIAN Zhi-hui,PAN Xiao-hua.Effects of Nitrogen Application and Planting Density on Production and Translocation of Dry Matter in Zhongyou 752[J].Acta Agriculturae Jiangxi,2008,20(7):1-6. |
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| Authors: | TIAN Zhi-hui PAN Xiao-hua |
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| Institution: | TIAN Zhi - hui, PAN Xiao - hua( 1. Jiangxi Agricultural University, Nanchang 330045 ,China; 2. Beiwu School of Shunyi District of Beijing, Beijing 101300 ,China) |
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| Abstract: | The three-line indica type hybrid medium rice Zhongyou 752 was used as material to study the effect of nitrogen application and planting density on the production and translocation of dry matter in rice.The results showed that the increase of nitrogen application and N rate applied at middle-later growth stage,and the decrease of planting density could enhance the dry weight of the stem-sheath and the redistribution of the stem-sheath reserve at heading stage;it was beneficial to turning the carbon photosynthetical product into sucrose and output of sucrose,delaying leaf senescence,and enhancing the dry product. |
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| Keywords: | Hybrid rice(O sativa ) Zhongyou 752 Nitrogen application Planting density Dry matter production and translocation |
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