| 超级早、晚稻的养分吸收和根系分布特性研究 |
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| 引用本文： | 袁小乐,潘晓华,石庆华,吴建富,漆映雪.超级早、晚稻的养分吸收和根系分布特性研究[J].植物营养与肥料学报,2010,16(1):27-32. |
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| 作者姓名： | 袁小乐 潘晓华 石庆华 吴建富 漆映雪 |
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| 作者单位： | 1.农业部双季稻生理生态与栽培重点开放实验室,作物生理生态与遗传育种教育部重点实验室,江西农业大学,江西南昌 330045; |
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| 基金项目： | 国家科技支撑计划，江西省科技厅科技攻关项目 |
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| 摘 要： | 为了阐明双季超级稻的高产机理和指导合理施肥，采用品种比较的方法，研究了超级早、晚稻品种的养分吸收和根系分布特性。结果表明，超级早、晚稻品种的养分吸收量平均分别为N 170.04、224.90 kg/hm2，P 21.97、39.88 kg/hm2，K 107.48、144.47 kg/hm2，均高于对照。生育中期（穗分化至抽穗）的养分吸收量与产量密切相关。生产100 kg稻谷所需要的养分较对照低10%左右。超级早、晚稻品种根系发达，根量较大。抽穗后15 d（早稻）或20 d（晚稻）的根量与产量密切相关，其中5—10 cm的根量与养分吸收总量密切相关。说明生育中期较多的养分吸收和发达的根系是超级早、晚稻高产的重要原因。
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| 关 键 词： | 超级稻 养分吸收 根系 产量 |
| 收稿时间： | 2009-1-20 |
Characteristics of nutrient uptake and root system distribution in super early and super late rice |
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| YUAN Xiao-yue,PAN Xiao-hua,SHI Qing-hua,WU Jian-fu,QI Ying-xue.Characteristics of nutrient uptake and root system distribution in super early and super late rice[J].Plant Nutrition and Fertilizer Science,2010,16(1):27-32. |
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| Authors: | YUAN Xiao-yue PAN Xiao-hua SHI Qing-hua WU Jian-fu QI Ying-xue |
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| Institution: | 1.Key Laboratory of Physiology,Ecology and Cultivation of Double Cropping Rice,Ministry of Agriculture/Key Laboratory of Crop Physiology Ecology and Genetic Breeding,Ministry of Education/Jiangxi Agricultural University,Nanchang,Jiangxi 330045,China; |
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| Abstract: | In order to elucidate the mechanisms involved in high yield of rice and provide guidance for fertilization in rice farming,the characteristics of nutrient uptake and root distribution in both super early rice and super late rice were studied under field conditions.The average uptake of nitrogen,phosphorus (P),and potassium(K) was 170.04,21.97 and 107.48 kg/ha,respectively,by super early rice,and was 224.90,39.88 and 144.47 kg/ha,respectively,by super late rice.Except for super early rice zhuliangyou819,the ... |
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| Keywords: | super rice (O sativa L) nutrient uptake root system yield |
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