| 氮素运筹对弱筋小麦扬麦9号产量、品质和旗叶衰老特性的影响 |
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| 引用本文： | 李春燕,徐月明,郭文善,封超年,刘萍,朱新开,彭永欣.氮素运筹对弱筋小麦扬麦9号产量、品质和旗叶衰老特性的影响[J].麦类作物学报,2009,29(3). |
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| 作者姓名： | 李春燕 徐月明 郭文善 封超年 刘萍 朱新开 彭永欣 |
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| 作者单位： | 1. 扬州大学江苏省作物遗传生理重点实验室/农业部长江中下游作物生理生态与栽培重点开放实验室,江苏扬州,225009
2. 扬州环境资源职业学院,江苏扬州,225127 |
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| 基金项目： | 国家自然科学基金，江苏省高校自然科学重大基础研究项目，江苏省科技支撑计划项目，江苏省333高层次人才培养工程专项基金 |
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| 摘 要： | 为了解弱筋小麦植株衰老特性与籽粒产量及品质形成的关系,选用弱筋小麦扬麦9号,设置不同的氮肥处理,测定和分析了植株生育后期旗叶光合特性和衰老特性及品质指标.结果表明,低氮(180 kg/ha)和高氮(240 kg/ha)在氮肥比例基肥∶壮蘖肥(5叶期施)∶拔节肥(倒3叶施)∶孕穗肥(倒1.5叶施)]为7∶1∶2∶0时的两处理生产的籽粒品质均符合国标(GB/T 17893-1999).施氮量180 kg/ha、氮肥比例5∶1∶2∶2处理植株生育后期净光合速率、Rubisco含量、SPAD值、POD和SOD酶活性在品质符合国标的处理中最高,旗叶蔗糖含量高,籽粒转化蔗糖能力强,产量最高;施氮量240 kg/ha、氮肥运筹5∶1∶2∶2处理,虽然有效延缓了植株衰老,产量最高,但籽粒品质不符合国标.说明弱筋小麦扬麦9号后期衰老速率快虽有利于降低籽粒蛋白质和湿面筋含量,但不利于产量提高;延缓衰老虽有利于产量提高,但易致品质下降.本试验条件下,弱筋小麦扬麦9号采用施氮量180 kg/ha、氮肥运筹5∶1∶2∶2的栽培方式,后期衰老速率适度,有利于品质改善,产量亦较高.
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| 关 键 词： | 弱筋小麦 产量 品质 衰老 |
Effect of Nitrogen Application Strategies on Leaf Senescence, Grain Yield and Quality of Weak Gluten Wheat Variety Yangmai 9 |
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| LI Chun-yan,XU Yue-ming,GUO Wen-shan,FENG Chao-nian,LIU Ping,ZHU Xin-kai,PENG Yong-xin.Effect of Nitrogen Application Strategies on Leaf Senescence, Grain Yield and Quality of Weak Gluten Wheat Variety Yangmai 9[J].Journal of Triticeae Crops,2009,29(3). |
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| Authors: | LI Chun-yan XU Yue-ming GUO Wen-shan FENG Chao-nian LIU Ping ZHU Xin-kai PENG Yong-xin |
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| Institution: | 1.Key Laboratory of Crop Genetics and Physiology of Jiangsu Province/Key Laboratory of Crop Physiology;Ecology and Cultivation in Middle and Lower Reaches of Yangtse River of Ministry of Agriculture;Yangzhou University;Yangzhou;Jiangsu 225009;China;2.Yangzhou Vocational College of Environment and Resoure;Jiangsu 225127;China |
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| Abstract: | The experiment was conducted to study the effects of nitrogen application on wheat(Triticum aestivum L.) plant senescence during the late growth period and its relationship with grain quality.Weak gluten wheat variety Yangmai 9 was cultivated on the experimental field in Yangzhou University.Photosynthetic and senescence characteristics,grain yield and quality were measured.The treatments with low nitrogen(180 kg/ha N),and high nitrogen(240 kg/ha N) as well as the proportion of N applied before sowing,at til... |
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| Keywords: | Weak gluten wheat Grain yield Grain quality Senescence characteristics |
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