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作 者 ：张国泰

期 刊 ：作物学报 1989年 15卷 04期 页码：349-354

关键词：顶小穗；停育小穗；分杈护颖；

Keywords:Apical spikelet, Spikelets with ceased development, Branching glume,

摘 要 ：小麦植株开始拔节时,幼穗的分化发育出现转折——停育小穗出现,侧小穗数不再增加,顶小穗开始分化,全穗的总小穗数定型。顶小穗的形成过程、形态结构与侧小穗不同。顶小穗出现的早晚,与温、光、营养等条件密切相关。了解小麦顶小穗的形成特点,注意适期早播,正确施肥,科学管理,可以延长小穗分化时间,推迟顶小穗出现,增加小穗数,

Abstract:The differentiation of the young spike of wheat reaches a turning point when thewheat plant begins to joint.At this point.“spikelets with ceased development”begin toappear,no more lateral spikelet will be differentiated,the apical spikelets begin to differen-tiate and the number of spikelets is fi

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