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中国农学通报 ›› 2005, Vol. 21 ›› Issue (4): 172-172.

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Analysis on the Grain Growing Characters in Wheat under Different Seedling Density

王文颇,周印富,李彦生,韩金玲   

  • 出版日期:2005-04-05 发布日期:2005-04-05

Analysis on the Grain Growing Characters in Wheat under Different Seedling Density

Wang Wenpo, Zhou Yinfu, Li Yansheng, Han Jinling   

  • Online:2005-04-05 Published:2005-04-05

摘要: 通过对不同密度处理的小麦子粒生长过程的分析表明:小麦开花后子粒鲜重、体积均呈“低—高—低”的变化,鲜重的变化略滞后,开花后含水量则不断下降,下降速率最快时期与灌浆速率最高时基本吻合。用logistic方程拟合了不同密度小麦子粒灌浆过程,快增期的天数和灌浆速率比较稳定;缓增期天数和灌浆速率的变异系数较大。因此,在提高缓增期灌浆速率的基础上,延长灌浆缓增期是目前增加粒重的关键。

Abstract: The grain growing processes of winter wheat under different seedling density were analyzed. The results were as follows: The volume and fresh weight of grain after anthesis were fitted “low-high-low ” changing tendency, but the change of fresh weight was s