| 氮肥运筹对水稻产量及氮素利用率的影响 |
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| 引用本文： | 卢铁钢,崔月峰,孙国才,王俊茹,王桂艳,王健.氮肥运筹对水稻产量及氮素利用率的影响[J].作物研究,2012,26(4):320-323. |
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| 作者姓名： | 卢铁钢 崔月峰 孙国才 王俊茹 王桂艳 王健 |
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| 作者单位： | 铁岭市农业科学院,辽宁铁岭,112616 |
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| 基金项目： | 国家现代农业产业技术体系资助项目(CARS-01-37) |
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| 摘 要： | 以北方超级稻沈农265为材料,研究了氮肥运筹对水稻产量形成及氮素利用率的影响.结果表明:施纯氮210kg/hm2,且基蘖肥与穗粒肥比为6∶4时,由于单位面积有效穗数较其他处理提高2.4％～21.1％,致使产量提高3.3％～20.2％;同一基蘖肥与穗粒肥施用比例下,随施氮量的增加,沈农265的总吸氮量呈上升趋势,而氮素利用率有下降趋势;不同施氮量条件下,穗粒肥比例增加有利于总吸氮量和氮素利用率的提高;适宜施氮量和基蘖肥与穗粒肥比例,能为水稻整个生育期提供比较平衡的氮素供应,提高氮肥利用效率,协调产量构成因素,从而提高产量,节本增效.
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| 关 键 词： | 水稻 施肥 氮肥运筹 产量 氮素利用率 |
Effects of Nitrogen Application on Yield Formation and Nitrogen Use Efficiency of Rice |
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| LU Tie-gang
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CUI Yue-feng
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SUN Guo-cai
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WANG Jun-ru
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WANG Gui-yan
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WANG Jian.Effects of Nitrogen Application on Yield Formation and Nitrogen Use Efficiency of Rice[J].Crop Research,2012,26(4):320-323. |
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| Authors: | LU Tie-gang CUI Yue-feng SUN Guo-cai WANG Jun-ru WANG Gui-yan WANG Jian |
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| Institution: | (Tieling Academy of Agricultural Sciences,Tieling,Liaoning 112616,China) |
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| Abstract: | The super rice Shennong 265 was used to study the effects of nitrogen application on yield formation and nitrogen use efficiency.The results showed that: when nitrogen application is 210 kg/hm2 and the ratio of basic tiller fertilizer and ear granular fertilizer was 6∶ 4,the effective panicle per unit area increased 2.4%~21.1% compared with other treatment,and the yield increased by 3.3%~20.2%;total nitrogen showed an increasing tendency while nitrogen utilization became lower with the amount of nitrogen increasing;the increasing of ear granular fertilizer promoted the total nitrogen and nitrogen use efficiency under different nitrogen application;Suitable amount of nitrogen and ear granular fertilizer could provide a balanced nitrogen supply for whole rice growth stage,improve nitrogen use efficiency so as to enhance the yield and reduce cost. |
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| Keywords: | Rice Fertilization Nitrogen application Yield Nitrogen use efficiency |
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