摘要： 以8个冬小麦品种为材料,在不同的供水条件下,研究了冬小麦籽粒灌浆特性参数对供水的反应。结果表明,不同的灌水处理下籽粒千粒重差异显著,旱区和灌2水的节水区的籽粒最大灌浆速率、平均灌浆速率和灌浆中期灌浆速率等均高于灌4水区,从而千粒重高于灌4水区。不同品种籽粒灌浆的不同特性参数对供水反应不同,但灌浆阶段的前期、中期和后期粒重积累量的比例大体一致,约为0.21,0.61和0.18。说明参试品种的前中后期籽粒积累与灌水无直接关系。

关键词: 冬小麦品种, 灌水, 灌浆特性

Abstract: Responses of grain -filling parameters to irrigations of 8 winter wheat cultivarswere studied.The results in -dicated that grain weight was significantly different among irrigations. The maximum grain -filling rate(Rmax), mean grain -filling rate(Rmean), and grain -filling rate of metaphase of treatments of no irrigation andwater -saving with only two irriga -tions given were obviously higher than that of four irrigation treatment, leading to higher final grain weight than four irriga -tion treatment. Different grain -filling parameters of different cultivars responded differently to water regimes. However, theproportion of cumulated amount in grain during prophase, metaphase and anaphase was about 0. 21, 0. 61 and 0. 18 for allirrigation treatments, revealing there was no direct relation of periodical proportion of grain filling to water supply for thecultivars used.

Key words: Winter wheat cultivar, Irrigation, Grain -filling parameter

中图分类号: 

• S512.101