摘要： 通过对小麦子粒灌浆及发育的研究分析，提出了子粒充实度的概念及计算公式，并据此对河南省小麦子粒灌浆模式进行了研究，结果表明，品种间的子粒充实度存在着显著差异，它可以较好地反映子粒生长潜力的发挥程度。河南省的高产小麦品种可以划分为四种灌浆模式：①高灌浆速度与短灌浆持续期相结合类型；②长灌浆持续期与早开花相结合类型；③长灌浆持续期与晚开花相结合类型；④低灌浆速度与长灌浆持续期相结合类型。其中，①②模式类型比较适合河南省的生态条件，子粒充实度较高。子粒充实度与子粒灌浆持续期、子粒灌浆完成期、开花期、起始生长势等密切相关。

关键词: 小麦, 子粒充实度, 灌浆模式

Abstract: On the basis of analysis on wheat grain filling and grain growth,the concept of grain filling degree and the related formula were suggested.Also the grain filling models were studied.It is suggested that there are significant differences in grain filling degree among the varieties used and the grain filling degree represents the effect of the grain growth potential .The grain filling models of the high yield wheat varieties in Henan provinces were divided into four types:(1)higher grain filling rate combined with shorter grain filling duration;(2)longer grain filling duration combined with early flowering;(3)longer grain rilling duration combined with later flowering;(4)lower grain filling rate combined with longer grain filling duration.The first two types were most suitable for the ecological condition of Henan province.Their grain filling degrees are higher than others.The grain filling degree is closely related to grain filling duration,the ending date of grain filling,the flow ering date and the initial growth potential.

Key words: Wheat, Grain filling degree, Grain filling model

中图分类号: 

• S512.101