旱地不同小麦品种氮素营养特性及诊断技术研究

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合理施用氮肥是提高小麦氮素利用效率及产量、改善小麦品质,保护环境的重要措施之一。多年来,国内外科学家们已进行了大量的研究,取得了不少成果。但应该看到,这些研究工作多集中在水肥条件供应充足的地区,对于旱地不同小麦品种对氮的吸收、转运,以及不同施氮水平下不同品种的氮素营养特性及诊断的研究尚待深入。本研究通过大田试验,研究了不同施氮量下不同冬小麦在生长过程中对氮素养分的吸收、累积和转移的效应,以及与小麦氮素营养相关的生长及生理指标与产量间的关系等。获得了以下主要结论:1 冬小麦群体干
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