| 摘要: |
| 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。 |
| 关键词: 小麦品种，早熟性，籽粒，干物质累积 |
| DOI： |
| 分类号:S512.101 |
| 基金项目:杨陵基金资助项目 |
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| Characteristics of Dry Material Accumulation in Kernels of Wheat Variety Xinong 1376 and Cultivated Ways for Grain-Weight Increase |
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Wang Hui Zhu Jianchu Sun Daojie,Wang Hui Zhu Jianchu Sun Daojie,Wang Hui Zhu Jianchu Sun Daojie
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| Abstract: |
| The result of the study shows that the flowering, fertilizing and grain developing of Xinong 1376 complete under the condition of relatively low temperature and its earnly-maturity is resulted from its early flowering and seed setting; the grain weight is increased in three development stages by 16.79%, 76.19% and 7.02% respectively with the main grainfilling stage being the very important; the important physilogical reasons for high grain weight and great yield potential of Xinong 1376 are the quickness and long-lasting period of the filling speed, especially in the peak period of filling stage. The main cultivated ways for grain weight increase are to enlarge and regulate the photosynthesis sources, to control the sunlight and temperature conditions in the grain filling stage with the sowing time, and to increase the water supply and fertilizer application after flowering. |
| Key words: wheat variety, early maturity, grain, dry material accumulation, |
