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为了给小麦高产栽培及新品种选育提供依据，对9个小麦品种的籽粒灌浆过程进行了研究。结果表明，小麦籽粒干重呈“S”型曲线增长，籽粒灌浆期可分为渐增期、快增期、缓增期三个阶段。相关分析表明，粒重主要是由快增期持续时间和灌浆速度决定的，与整个灌浆持续期关系不明显。在小麦灌浆快增期，灌浆速度越快，持续时间越长，干物质积累越多，粒重就越高。不同品种间籽粒灌浆特性存在一定的差异；综合分析表明，襄麦29和百农矮抗58 1籽粒灌浆速度较快，粒重较高。

英文摘要:

In order to achieve high yield and offer evidence for selecting new varieties, the grain filling processes of ten different wheat varieties were studied. The results showed that grain dry weights showed "S" curve at grain filling period. Wheat grain filling stage can be divided into gradual increase stage，the rapid increase stage, and increasing period. Correlation analysis showed grain weight were decided by rapid increase stage and grain filling rate and was not obvious with the entire grain filling period. In rapid increase stage, faster grain filling rate, longer duration, more dry matter accumulation quantity and higher grain weight. The differences of Grain Filling Characteristics between varieties were obvious; Comprehensive analysis showed that the grain filling rate of Xiangmai 29 and BN AK58 1 were faster, the grain weight were higher.

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