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棉花打顶对激素的影响与养分吸收变化
Authors
吕昭智
李中军
+3 more
李莉
陈冠文
黄子蔚
Publication date
1 January 2006
Publisher
Abstract
研究棉花打顶后倒四叶内源激素和养分的关系表明:棉花打顶后,植株叶片的激素平衡关系被破坏,ABA/IAA和ABA/CTK比值上升,CTK含量下降。比值的变化降低了叶片中N和P的含量,但对K的变化无明显影响;降低了茎中N的含量,但对P和K的变化无明显影响;增加了生殖器官中的N,但对P,K的变化无明显影响。涂抹NAA能使叶片和茎中N下降的幅度缓解或加强。打顶对叶片的衰老影响最为明显。它将使棉株整体(尤其是营养器官)由正常生长向衰老方向转化,叶片内氮素营养减少,叶绿素含量下降
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Institutional Repository of Xinjiang Institute of Ecology and Geography, CAS
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Last time updated on 29/11/2016