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| 施氮量对春玉米产量形成与氮肥利用率的影响 | |
| 引用本文： | 易镇邪,吴小京,张小平,李水加,罗红兵,屠乃美.施氮量对春玉米产量形成与氮肥利用率的影响[J].作物研究,2010,24(1):22-24. |
| 作者姓名： | 易镇邪 吴小京 张小平 李水加 罗红兵 屠乃美 |
| 作者单位： | 1. 湖南农业大学农学院,长沙,410128 2. 郴州市农作物种子储备和技术推广站,湖南郴州,423000 3. 郴州市农业科学研究所,湖南郴州,423042 4. 临武县农业局,湖南临武,424300 |
| 基金项目： | 湖南省教育厅科学研究项目，湖南省普通高校青年骨干教师培养计划项目 |
| 摘 要： | 以湘农玉14号为材料,于2009年在临武研究了施氮量对春玉米产量形成与氮肥利用率的影响,结果表明:在施N0～270kg/hm2范围内,随施氮量增加,湘农玉14号株高增大,总叶数增加,果穗性状明显改善,库容显著增大,且灌浆期延长2～3d,产量显著提高,但施N180kg/hm2处理与270kg/hm2处理产量差异不显著;湘农玉14号氮肥利用率随施氮量增加而显著下降。综合来看,本试验条件下,湘农玉14号以施氮180kg/hm2左右较为适宜,能获得较高产量和氮肥利用率。 |
| 关 键 词： | 春玉米 施肥 氮 产量形成 氮利用效率 |
Effects of Nitrogen Application Rate on Yield Formation and Nitrogen Use Efficiency of Spring Maize |
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| YI Zhen-xie,WU Xiao-jing,ZHANG Xiao-ping,LI Shui-jia,LUO Hong-bing,TU Nai-mei.Effects of Nitrogen Application Rate on Yield Formation and Nitrogen Use Efficiency of Spring Maize[J].Crop Research,2010,24(1):22-24. | |
| Authors: | YI Zhen-xie WU Xiao-jing ZHANG Xiao-ping LI Shui-jia LUO Hong-bing TU Nai-mei |
| Institution: | YI Zhen-xie1,WU Xiao-jing2,ZHANG Xiao-ping3,LI Shui-jia4,LUO Hong-bing1,TU Nai-mei1(1 College of Agronomy,Hunan Agricultural University,Changsha 410128,China,2 Chenzhou Crop Seed Storage , Technology Extension Station,Chenzhou,Hunan,423000,3 Chenzhou Institute of Agricultural Sciences,423042,4 Linwu Agricultural Bureau,Linwu,424300,China) |
| Abstract: | Xiangnongyu No. 14 was used as material to study the effects of nitrogen application rate on yield formation and nitrogen use efficiency （NUE） of spring maize in Chenzhou, Hunan province, and the main results showed that along with increase of nitrogen application rate from 0 to 270 kg/hm2, plant height and leaf number of Xiangnongyu No. 14 were increased, ear characteristics were improved evidently, volume of sink was increased significantly, duration of filling stage was prolonged 2~3 d, and the yield was increased significantly, while the yield difference between 180 kg/hm2and 270 kg/ hm2 treatment was not significant. NUE of Xiangnongyu No. 14 was decreased significantly along with increase of nitrogen application rate. These results showed that about 180 kg/hm2 was appropriate to Xiangnongyu No. 14 under eonditions in this study, which could result in higher yield and NUE. |
| Keywords: | Spring maize Fertilization Nitrogen Yield formation Nitrogen utilization efficiency |
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