| 冬小麦植株氮素营养诊断指标研究 |
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| 引用本文： | 张国印,孙世友,秦凤书,茹淑华,耿暖,王凌. 冬小麦植株氮素营养诊断指标研究[J]. 河北农业科学, 2006, 10(4): 1-4 |
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| 作者姓名： | 张国印 孙世友 秦凤书 茹淑华 耿暖 王凌 |
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| 作者单位： | 河北省农林科学院农业资源环境研究所,河北,石家庄,050051;河北省曲周县科技局,河北,邯郸,057250 |
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| 基金项目： | 国家粮食丰产科技工程项目 |
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| 摘 要： | 采用田间小区试验与植株硝态氮速测系统结合的方法,确定采用反射仪法速测冬小麦拔节期植株硝态氮含量对植株氮素营养进行评价.结果显示,冬小麦拔节期植株硝态氮含量缺乏临界值为1 000 mg/kg,充足评价指标为1 300 mg/kg;土壤合理的底肥施N量为75～150 kg/hm2;冬小麦拔节期合理的氮肥追施量应控制在100～150 kg/hm2;冬小麦最佳经济效益追肥量为117.86 kg/hm2.
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| 关 键 词： | 冬小麦 含氮量 营养诊断 指标 |
| 文章编号： | 1008-1631(2006)04-0001-04 |
| 修稿时间： | 2006-12-05 |
Study on Plant Nitrogen Diagnostic Technique and Index of Winter Wheat |
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| ZHANG Guo-yin,SUN Shi-you,QIN Feng-shu,RU Shu-hua,GENG Nuan,WANG Ling. Study on Plant Nitrogen Diagnostic Technique and Index of Winter Wheat[J]. Journal of Hebei Agricultural Sciences, 2006, 10(4): 1-4 |
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| Authors: | ZHANG Guo-yin SUN Shi-you QIN Feng-shu RU Shu-hua GENG Nuan WANG Ling |
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| Abstract: | Field experiment was adopted to study plant nitrogen diagnostic technique and index of winter wheat.The plant nitrate contents were measured at the jointing stage.From the experiment,the following results were obtained.The critical content of plant nitrate content for winter wheat was 1000mg/kg,the least ample evaluation index was 1300mg/kg.The reasonable amount of N for base application should be(75-150kg/hm~2.)The nitrogen fertilizer used for topdressing at the jointing stage was reasonable if it was between 100kg/hm~2 and 150 kg/hm~2.The most economic topdressing rate for winter wheat at jointing stage was(117.86kg/hm~2.) |
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| Keywords: | Winter wheat Nitrogen content Nutrition diagnosis Index |
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