| 氮肥后移对晚收夏玉米产量及氮素吸收利用的影响 |
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| 引用本文： | 王宜伦,张许,李文菊,谭金芳,李潮海.氮肥后移对晚收夏玉米产量及氮素吸收利用的影响[J].玉米科学,2011,19(1):117-120. |
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| 作者姓名： | 王宜伦 张许 李文菊 谭金芳 李潮海 |
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| 作者单位： | 河南农业大学,农业部玉米区域技术创新中心,郑州,450002 |
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| 基金项目： | 国家玉米产业技术体系项目、中国-国际植物营养研究所合作项目(NMBF-HenanAU-2009) |
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| 摘 要： | 采用田间试验研究氮肥后移对晚收夏玉米产量、氮素吸收分配和氮肥利用效率的影响。结果表明,氮肥后移使夏玉米产量和氮素积累量增加,在农民习惯收获和晚收条件下分别较正常施氮增产2.11%～2.91%和7.23%～9.52%。晚收较农民习惯收获增产2.12%～6.42%,氮积累量增加1.10%～3.18%;晚收夏玉米茎和子粒氮积累量增加,而叶和其他器官中积累量减少。氮肥后移提高了夏玉米氮肥利用率和农学效率,晚收条件下氮肥利用率提高了3.52%～6.87%,氮肥农学效率提高了0.82～1.60 kg/kg。氮肥按"30%苗肥+30%大喇叭口肥+40%吐丝肥"方式施用在晚收条件下产量和氮肥利用效率最高。
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| 关 键 词： | 夏玉米 氮肥 氮积累量 氮肥效率 |
| 收稿时间： | 6/9/2010 12:00:00 AM |
Effects of Postponing N Application on Yield and N Absorption and Utilization of Summer Maize in Later Harvest Time |
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| WANG Yi-lun,ZHANG Xu,LI Wen-ju,TAN Jin-fang,LI Chao-hai.Effects of Postponing N Application on Yield and N Absorption and Utilization of Summer Maize in Later Harvest Time[J].Journal of Maize Sciences,2011,19(1):117-120. |
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| Authors: | WANG Yi-lun ZHANG Xu LI Wen-ju TAN Jin-fang LI Chao-hai |
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| Institution: | WANG Yi-lun,ZHANG Xu,LI Wen-ju,TAN Jin-fang,LI Chao-hai(Henan Agricultural University/Regional Center for New Technology Creation of Corn of Department of Agriculture,Zhengzhou 450002,China) |
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| Abstract: | Field experiment was carried out to study the effects of postponing N application on yield and N absorption,allocation and N fertilizer utilization efficiency of summer maize in later harvest time.The results showed that postponing N fertilizer application could increase grain yield and N accumulation,increased yield by 2.11%-2.91% in accustomed harvest time and 7.23%-9.52% in later harvest time.Compared with accustomed harvest,later harvest's yield increased by 2.12%-6.42%,N accumulation increased by 1.10%... |
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| Keywords: | Summer maize N application N accumulation N fertilizer efficiency |
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