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氮肥用量对油菜产量及氮素利用效率的影响
引用本文:李银水,鲁剑巍,廖 星,邹 娟,李小坤,余常兵,马常宝,高祥照.氮肥用量对油菜产量及氮素利用效率的影响[J].中国油料作物学报,2011,33(4):379-383.
作者姓名:李银水  鲁剑巍  廖 星  邹 娟  李小坤  余常兵  马常宝  高祥照
作者单位:1. 中国农业科学院油料作物研究所,湖北 武汉 430062; 2. 华中农业大学资源与环境学院,湖北 武汉 430072; 3. 全国农业技术推广服务中心,北京100026)

基金项目:国家“十一五”科技支撑计划重点项目(2010BAD01B05,2008BADA4B08); 油菜产业技术体系建设(nycytx-005); 中央级公益性科研院所基本科研业务费专项(2009026)
摘    要:通过大田试验研究了氮肥用量对油菜产量、养分含量、养分累积量及氮肥利用效率的影响。结果表明,与不施氮相比,施氮肥75、150和225kg/hm2平均分别增产41.9%、70.3%和66.2%,籽粒含氮量分别提高9.1%、14.2%和13.1%,植株地上部氮素总累积量分别增加59.6%、111.6%和108.0%。施氮促进油菜生长发育,显著提高油菜对氮素的吸收、累积和籽粒需氮量,但氮肥农学利用率、偏生产力和表观利用率均随氮肥用量的增加显著下降。氮肥用量在150kg/hm2时,能较好地协调油菜较高产量水平与合理氮肥利用率的统一。

关 键 词:油菜  氮肥用量  产量  氮肥利用率

Effect of nitrogen application rate on yield and nitrogen fertilization efficiency in rapeseed
LI Yin-shui,LU Jian-wei,LIAO Xing,ZOU Juan,LI Xiao-kun,YU Chang-bing,MA Chang-bao,GAO Xiang-zhao.Effect of nitrogen application rate on yield and nitrogen fertilization efficiency in rapeseed[J].Chinese Journal of Oil Crop Sciences,2011,33(4):379-383.
Authors:LI Yin-shui    LU Jian-wei  LIAO Xing  ZOU Juan  LI Xiao-kun  YU Chang-bing  MA Chang-bao  GAO Xiang-zhao
Affiliation:LI Yin-shui1,2,LU Jian-wei2,LIAO Xing1,ZOU Juan2,LI Xiao-kun2,YU Chang-bing1,MA Chang-bao3,GAO Xiang-zhao3(1.Oil Crops Research Institute,Chinese Academy of Agricultural Sciences,Key Laboratory of Oil Crop Biology of the Ministry of Agriculture,Wuhan 430062,China,2.College of Resources and Environment,Huazhong Agricultural University,Wuhan 430070,3.China Agricultural Technology Extensions,Beijing 100026,China)
Abstract:Field experiments were carried out to study the effects of nitrogen(N) application rate on rapeseed yield and N fertilizer use efficiency in Hubei Province during 2007 to 2008.Compared to no N application,the yield of N treatments(as 75,150 and 225kg/hm2) increased 41.9%,70.3% and 66.2% respectively.N content increased 9.1%,14.2% and 13.1%,and total N absorbed by above ground parts increased 59.6%,111.6% and 108.0% respectively.The results demonstrated that N application significant promoted growth,yield an...
Keywords:Rapeseed(Brassica napus L  )  Nitrogen application rate  Yield  Nitrogen use efficiency  
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