It was suggested that low sink activities in grain filling period,especially at early stage,account for an important reason for poor grain plumpness in IHR. 說明灌漿期特別是灌漿初期籽粒庫的生理活性低是亞種間雜交稻籽粒充實不良的重要原因。
There were differences of cumulative water consumption and daily water consumption among different growth stages, and the daily water consumption in filling stage was the highest. 各生育時期的耗水量和日耗水量在不同生育時期存在差異，其中以灌漿期春小麥日均耗水量為最高。
