【摘要】 为促进寒地超级稻育种并提高其栽培技术水平,以寒地超级稻龙稻5号和同区种植面积较大品种龙稻3号为试验试材,研究其籽粒灌浆的动态变化。结果表明:寒地超级稻龙稻5号籽粒灌浆过程中籽粒重量与抽穗后日数符合Logistic方程,推测其最大千粒重为23.94g,最大籽粒灌浆速率是在抽穗后13d左右出现。更多还原

【Abstract】 In order to promote the breeding of super-rice in cold and improve the level of cultivation techniques,taking super-rice Longdao 5and control variety in the same ecotope Longdao 3as materials,dynamic change of grain-filling was studied.The results showed that grain weight and the days after heading of Longdao 5were fitted well with Logistic equation,its maximal thousand kernel grain weight was reckoned 23.94g,the maximum grain-filling rate appeared after heading for 13d,and the plant area was large.更多还原