| 氮肥运筹对小麦群体变化、穗粒数分布及产量的影响 |
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| 引用本文： | 张德奇,季书勤,王汉芳,李向东,吕凤荣,郭瑞,程红建.氮肥运筹对小麦群体变化、穗粒数分布及产量的影响[J].中国农学通报,2011,27(21):49-52. |
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| 作者姓名： | 张德奇 季书勤 王汉芳 李向东 吕凤荣 郭瑞 程红建 |
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| 作者单位： | 河南省农业科学院小麦研究中心/河南省小麦生物学重点实验室,郑州,450002 |
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| 基金项目： | “十二五”国家科技支撑计划项目“粮食丰产科技工程”(2011BAD16B07); “十一五”国家科技支撑计划“粮丰工程河南课题”(2006BAD02A07-3);“十一五”国家科技支撑计划项目“农田循环高效生产模式关键技术研究与集成示范”(2007BAD89B01) |
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| 摘 要： | 为小麦持续增产提供重要技术途径，对氮肥不同施用量和不同底追比例进行研究，选用‘周麦18’作为试验材料，研究了氮肥运筹技术对小麦群体动态变化、穗粒数分布及产量的影响。结果表明：“前轻中重后补充”的氮肥运筹技术降低了小麦生育期的最高群体，小麦分蘖成穗率较传统施肥处理提高了3.1个百分点，同时增加了穗粒重、提高了千粒重，单穗重显著提高了0.2 g；在每公顷施纯氮240 kg和180 kg条件下，运用“前轻中重后补充”氮肥运筹技术较传统施肥处理（全底）增产694.5 kg/hm2、486.0 kg/hm2，增幅分别为10.1%和7.2%。结果说明“前轻中重后补充”的氮肥应用策略是一项高产高效的氮肥运筹技术。
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| 关 键 词： | 萝卜 萝卜 |
| 收稿时间： | 2011/3/30 0:00:00 |
| 修稿时间： | 2011/6/16 0:00:00 |
Effects of Nitrogen Strategies on the Population Changes, Distribution of Grains Per Spike and Yield in Winter Wheat |
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| Zhang Deqi,Ji Shuqin,Wang Hanfang,Li Xiangdong,Lv Fengrong,Guo Rui,Cheng Hongjian.Effects of Nitrogen Strategies on the Population Changes, Distribution of Grains Per Spike and Yield in Winter Wheat[J].Chinese Agricultural Science Bulletin,2011,27(21):49-52. |
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| Authors: | Zhang Deqi Ji Shuqin Wang Hanfang Li Xiangdong Lv Fengrong Guo Rui Cheng Hongjian |
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| Institution: | Zhang Deqi,Ji Shuqin,Wang Hanfang,Li Xiangdong,Lv Fengrong,Guo Rui,Cheng Hongjian(Wheat Research Center,Henan Academy of Agricultural Sciences /Henan Key Laboratory of Wheat Biology,Zhengzhou 450002) |
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| Abstract: | In order to provide the increasing production for winter wheat,we study the nitrogen strategies and nitrogen needs of wheat growth to be consistent with the best match.Select ' Zhoumai18 ' as material,the effects of nitrogen strategies were studied by the population changes,grain number and yield of wheat.The results showed that the nitrogen strategies technique of increasing topdressing and later supplementing by controlling basal can reduce the peak changes in the growth population,effectively improve spi... |
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| Keywords: | nitrogen strategy population changes yield |
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