氮肥对江淮不同年代小麦品种产量品质和氮利用的影响

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阐明不同年代冬小麦产量、品质、籽粒主要矿质元素含量和氮肥利用效率的年代差异及对施氮水平的响应趋势,对高产优质、氮高效的品种选育和栽培技术创新具有重要的理论参考和技术指导意义。为此,本试验于2010-2011年在江苏省丹阳市延陵镇,以该地20世纪60年代至今冬小麦代表性主栽品种为材料,设置三个氮肥水平,研究江淮地区不同年代冬小麦主栽品种的产量、品质、籽粒主要矿质元素含量和氮肥利用效率的演变特征及对氮肥的响应。主要结论如下:(1)随着年代的变化,冬小麦主栽品种籽粒产量呈现上升趋势,低氮(N1)水
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