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玉米倒伏原因

蒋金美, 薛春玲,佘明徽, 车春信

Yunnan Agriculture(2016)

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Abstract
玉米倒伏是指玉米茎秆节间折断或倾斜.玉米倒伏有茎倒、根倒及茎折.茎倒是茎秆长得细长,植株过高,基部组织强度差,遇暴风雨造成茎秆倾斜;根倒是根系发育不良,灌水及雨水过多,遇风引起倾斜度较大的倒伏;茎折主要是抽雄前生长较快,茎秆组织嫩弱及病虫危害,遇风引起的茎秆折断.其中,对产量影响最大的是茎折,其次是根倒,茎倒对产量的影响最轻.
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