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栽培密度对高粱茎叶性状及籽粒质量的影响
Authors
姜闯道
李涛
王卫锋
王林
Publication date
1 January 2017
Publisher
Abstract
为了探讨田间植株自遮阴对高粱冠层器官性状及籽粒灌浆的影响,通过排除根系竞争研究了高粱茎叶及果穗籽粒对栽培密度的响应。结果表明,栽培密度升高后,高粱植株的单叶面积、比叶质量(鲜质量)、茎秆节间的直径与干质量、穗柄的直径与干质量等均下降,但茎秆的节间长度与节间数及穗柄长度增加;高粱籽粒干质量随栽培密度的升高而下降,栽培密度对粒质量影响最大的时期是高粱生长的第100天前后;随着叶位与节位的升高,高粱的单叶面积与比叶质量以及茎秆的节间性状等在各密度群体内的变化趋势类似。因此,在排除地下根系间的竞争后,增加种植密度同样会抑制田间高粱冠层器官的生长,并进而影响果穗产量
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of Botany,Chinese Academy Of Sciences
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Last time updated on 09/06/2022