氮肥运筹对不同穗型小麦产量和品质性状影响的研究

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本文以田间试验为依据,研究了氮肥运筹对不同穗型小麦烟农19和兰考矮早8产量和品质的调控效应。研究结果表明:1.氮肥运筹对不同穗型小麦茎秆倒伏的影响基部第二节间的外径、壁厚、节间充实度等与倒伏密切相关。两种穗型小麦的第二节间外径、茎秆壁厚、机械强度、节间充实度和茎秆抗倒指数均随着施氮量的增加而减小,随着氮肥后移增大。多穗型小麦烟农19与大穗型小麦兰考矮早8节间形态相比较可以知道,大穗型小麦兰考矮早8的外径、壁厚、机械强度、节间充实度均高于多穗型小麦烟农19,所以兰考矮早8的抗倒伏指数也
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