[目的]研究不同播期对小麦籽粒灌浆特征及参数的影响.[方法]以小麦品种9356为供试品种,设置3个播期,分析播期与小麦籽粒灌浆的关系.[结果]结果表明:不同播期下小麦籽粒灌浆过程可以用Richards方程描述;播期对籽粒灌浆参数均有一定影响,但不同参数影响也不同;平均灌浆速率与小麦粒重呈极显著正相关关系.[结论]播期对籽粒灌浆持续时间和籽粒灌浆平均速率均有一定的影响,并且对平均灌浆速率的影响较为显著.%[Objective]This research aimed to study the effects of sowing date on wheat grain filling characteristics and parameters. [ Method] Wheat 9356 was taken as materials, and three sowing dates was set to research the relationship between sowing dates and grain filling. [ Result ] The results showed that Richards equation could describe grain filling processes of different sowing dates. Sowing dates had certain effects on parameters of grain filling, but the effects were different as the parameters were different. There was a significant negative correlation between average grain filling rate and grain weight. [ Conclusion ] Sowing dates had effects on both grain filling duration and average grain filling rate, and the effects was more significant on average grain filling rate.
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