Delayed Sowing can Maintain Grain Yield and Nitrogen Use Efficiency of Winter Wheat while Raising Lodging Resistance
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- 英文论文题名：Delayed Sowing can Maintain Grain Yield and Nitrogen Use Efficiency of Winter Wheat while Raising Lodging Resistance
- 论文作者：代兴龙 ; Wang Yue-chao ; JIA Dian-yong ; 贺明荣
- 英文论文作者：DAI Xing-long ; Wang Yue-chao ; JIA Dian-yong ; HE Ming-rong ; National Key Lab.of Crop Biology ; Collaborative Innovation Team of Shandong Wheat-Corn Crops ; Key Lab.of Crop Ecophysiology and Farming System ; Ministry of Agriculture ; Agronomy College of Shandong Agricultural University ; College of Plant Science and Technology ; Huazhong Agricultural University ; Life Science and Technology College ; Nanyang Normal University
- 年：2016
- 作者机构：National Key Lab.of Crop Biology;Collaborative Innovation Team of Shandong Wheat-Corn Crops;Key Lab.of Crop Ecophysiology and Farming System,Ministry of Agriculture,Agronomy College of Shandong Agricultural University;College of Plant Science and Technology,Huazhong Agricultural University;Life Science and Technology College,Nanyang Normal University;
- 英文论文关键词：Winter wheat ; Sowing date ; Grain yield ; Nitrogen use efficiency ; Lodging resistance
- 会议召开时间：2016-10-26
- 会议录名称：2016年全国青年作物栽培与生理学术研讨会论文集
- 语种：英文
- 分类号：S512.11
- 学会代码：CSSC
- 会议名称：2016年全国青年作物栽培与生理学术研讨会
- 会议地点：中国山东泰安
- 主办单位：中国作物学会
- 学会名称：中国作物学会
- 页数：1
- 文件大小：65k
- 原文格式：O
- 会议级别：全国
摘要
【Background and Aims】 Grain yield and nitrogen use efficiency(NUE) of winter wheat could be synchronously improved by managing the seeding rate.However,an increased seeding rate makes wheat plant more susceptible to lodging.Maintaining or improving grain yield and NUE without a reduction in lodging resistance is a major goal of management strategy researchers.【Materials and Methods】 During the 2013-2014 and 2014-2015 seasons,two winter wheat cultivars were sown on three dates(conventional sowing on 8 October,early sowing on 1October,and delayed sowing on 15 October,with an average of 112.6 and 107.8 days ≥0℃temperature accumulation before and after conventional sowing prior to wintering,respectively)with relatively high seeding rate.The responses of grain yield,NUE,and lodging resistance to sowing date were investigated.【Results】 The early,conventional and late sowing resulted in no differences in grain yield based on the equivalent kernel weight and number of kernels per unit area.Early and conventional sowing showed equivalent NUE owing to equivalent NUE components;however,delayed sowing showed the same NUE by increasing nitrogen utilisation efficiency due to a reduction in grain nitrogen concentration.Late sowing significantly increased lodging resistance of winter wheat through reducing culm height at the centre of gravity and increasing tensile failure strength of the base internode.【Conclusions】 Sowing later man the conventional sowing times could synergistically observe high grain yield,NUE,and lodging resistance.
【Background and Aims】 Grain yield and nitrogen use efficiency(NUE) of winter wheat could be synchronously improved by managing the seeding rate.However,an increased seeding rate makes wheat plant more susceptible to lodging.Maintaining or improving grain yield and NUE without a reduction in lodging resistance is a major goal of management strategy researchers.【Materials and Methods】 During the 2013-2014 and 2014-2015 seasons,two winter wheat cultivars were sown on three dates(conventional sowing on 8 October,early sowing on 1October,and delayed sowing on 15 October,with an average of 112.6 and 107.8 days ≥0℃temperature accumulation before and after conventional sowing prior to wintering,respectively)with relatively high seeding rate.The responses of grain yield,NUE,and lodging resistance to sowing date were investigated.【Results】 The early,conventional and late sowing resulted in no differences in grain yield based on the equivalent kernel weight and number of kernels per unit area.Early and conventional sowing showed equivalent NUE owing to equivalent NUE components;however,delayed sowing showed the same NUE by increasing nitrogen utilisation efficiency due to a reduction in grain nitrogen concentration.Late sowing significantly increased lodging resistance of winter wheat through reducing culm height at the centre of gravity and increasing tensile failure strength of the base internode.【Conclusions】 Sowing later man the conventional sowing times could synergistically observe high grain yield,NUE,and lodging resistance.
【Background and Aims】 Grain yield and nitrogen use efficiency(NUE) of winter wheat could be synchronously improved by managing the seeding rate.However,an increased seeding rate makes wheat plant more susceptible to lodging.Maintaining or improving grain yield and NUE without a reduction in lodging resistance is a major goal of management strategy researchers.【Materials and Methods】 During the 2013-2014 and 2014-2015 seasons,two winter wheat cultivars were sown on three dates(conventional sowing on 8 October,early sowing on 1October,and delayed sowing on 15 October,with an average of 112.6 and 107.8 days ≥0℃temperature accumulation before and after conventional sowing prior to wintering,respectively)with relatively high seeding rate.The responses of grain yield,NUE,and lodging resistance to sowing date were investigated.【Results】 The early,conventional and late sowing resulted in no differences in grain yield based on the equivalent kernel weight and number of kernels per unit area.Early and conventional sowing showed equivalent NUE owing to equivalent NUE components;however,delayed sowing showed the same NUE by increasing nitrogen utilisation efficiency due to a reduction in grain nitrogen concentration.Late sowing significantly increased lodging resistance of winter wheat through reducing culm height at the centre of gravity and increasing tensile failure strength of the base internode.【Conclusions】 Sowing later man the conventional sowing times could synergistically observe high grain yield,NUE,and lodging resistance.
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