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基于土壤无机氮测试的优化施肥对冬小麦产量和农田氮平衡的影响
引用本文:孙彦铭,贾良良,韩宝文,曹彩云,张国印,李科江,刘孟朝.基于土壤无机氮测试的优化施肥对冬小麦产量和农田氮平衡的影响[J].河北农业科学,2008,12(2):73-75.
作者姓名:孙彦铭  贾良良  韩宝文  曹彩云  张国印  李科江  刘孟朝
作者单位:1. 河北省农林科学院农业资源环境研究所,河北,石家庄,050051
2. 河北省农林科学院旱作农业研究所,河北,衡水,053000
基金项目:国家科技支撑项目(2006BAD05B04),农业部948重大国际引进项目(2006-G60),河北省农林科学院博士基金项目
摘    要:应用基于土壤无机氮测试的优化氮肥管理措施对冬小麦进行氮肥管理,比较了优化施氮处理与传统施氮处理在拔节期的作物氮素营养状况、收获期的作物产量效应和对农田氮平衡的影响。结果表明:优化施氮处理的产量(6217kg/hm^2)与传统施氮处理产量(6223kg/hm^2)间差异不大,但较传统施氮处理节省氮肥40%,氮肥利用率从传统施氮的31%提高到优化施氮处理的50.6%。同时收获后优化施氮处理的土壤中的无机氮残留量(90kg/hm^2)远小于传统施氮处理(176kg/hm^2),氮素表观损失量从传统施氮的82kg/hm^2减少到40kg/hm^2。

关 键 词:冬小麦  土壤  无机氮  优化施肥  产量
文章编号:1008-1631(2008)02-0073-03
修稿时间:2007年12月25

Effects of Optimized Nitrogen Fertilization Based on Soil Inorganic Nitrogen Test on Winter Wheat Yield and Nitrogen Baianee
SUN Yan-ming,JIA Liang-liang,HAN Bao-wen,CAO Cai-yun,ZHANG Guo-yin,LI Ke-jiang,LIU Meng-chao.Effects of Optimized Nitrogen Fertilization Based on Soil Inorganic Nitrogen Test on Winter Wheat Yield and Nitrogen Baianee[J].Journal of Hebei Agricultural Sciences,2008,12(2):73-75.
Authors:SUN Yan-ming  JIA Liang-liang  HAN Bao-wen  CAO Cai-yun  ZHANG Guo-yin  LI Ke-jiang  LIU Meng-chao
Institution:SUN Yan-ming, JIA Liang-liang, HAN Bao-wen, CAO Cai-yun, ZHANG Guo-yin , LI Ke-jiang, LIU Meng-chao (1. Institute of Agro-resources and Environment, Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang 050051 , China; 2. Institute of Dryland Farming, Hebei Academy of Agriculture and Forestry Sciences, Hengshui 053000, China)
Abstract:Optimized nitrogen fertilization based on soil inorganic nitrogen test was used to study the yield effect and nitrogen balance of winter wheat.The results showed there were not yield difference between optimized N treatment(6 217 kg/hm2) and conventional treatment(6 223 kg/hm2),but the optimized N management reduced 40% N fertilizer than conventional farmers' N fertilization.The N use efficiency significantly increased from conventional farmers' treatments of 31% to 50.6% of optimized N treatment,and the inorganic nitrogen residual in optimized N treatment(90 kg/hm2)was lower than that in after harvest significantly conventional treotment(176 kg/hm2).The apparent N loose significantly reduced from 82 kg/hm2 of conventional farmers' N treatments to 40 kg/hm2 of optimized N management.
Keywords:Winter wheat  Soil  Inorganic nitrogen  Optimized fertilization  Yield
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