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小麦品种西农１３７６开花受精和籽粒形成是在较低温度下完成的，其早熟性是通过早花、早实获得的；该品种籽粒发育３个阶段对粒重的贡献分别为１６．７９％，７６．１９％和７．０２％，主灌浆期是决定其粒重高低的关键时期；主灌浆期灌浆速度快、持续时间（特别是灌浆高峰期）长、干物质累积量多是该品种粒重高、丰产潜力大的重要生理原因。扩大、协调光合源，用播期调控灌浆期温光条件和适当增加开花后水肥投入是提高该品种粒重的重要途径
The flowering and fertilization and grain formation of wheat cultivar Xinong 1376 were completed at lower temperature, and its precocity was obtained through early flowering and early harvesting. The contribution of three stages of grain development to grain weight was 16.79% , 76.19% and 7.02%, respectively. The main filling stage was the key period for determining the grain weight. The main filling stage was quick in filling speed and the duration (especially in filling stage) High grain weight, high yield potential of the important physiological reasons. It is an important way to enlarge and coordinate the photosynthetic source, regulate the temperature and light conditions during grain filling stage with sowing date and properly increase the water and fertilizer input after flowering