中文摘要：

研究了不同灌水频次对强筋小麦（济麦20和藁城8901）的蛋白质组分含量、粒度分布、品质及产量的影响，结果表明：灌水次数在0～2范围内，济麦20和藁城8901的籽粒产量随灌水次数增加而增加，在灌水次数增加到3次时，籽粒产量较灌2水处理显著下降。随灌水次数增加，济麦20和藁城8901的SDS可溶性谷蛋白含量、SDS不溶性谷蛋白含量、醇溶蛋白含量、HMW—GS含量和LMW—GS含量均呈上升趋势，SDS不溶性谷蛋白聚合体的算数平均直径、面团品质（形成时间和稳定时间）和面包品质（体积和总评分）亦均呈上升趋势。相关分析表明，SDS可溶性谷蛋白含量与面团和面包品质达到显著正相关；SDS不溶性谷蛋白含量与面团和面包品质相关不显著，但其算数平均直径与面团和面包品质呈显著正相关。

英文摘要：

The effects of irrigation frequency on grain protein composition, kernel size distribution, quality and yield for two winter wheat cultivars with strong gluten （Jimai 20, Gaocheng 8901 ） were studied. Results ：The grain yields of Jimai 20 and Gaocheng 8901 increase with irrigation frequency ranged from 0 to 2 times;however, they decrease in thrice irrigation treatment compared with twice irrigation. With irrigation frequency added, the contents of SDS - insoluble glutenin, SDS- soluble glutenin, gliadin, HMW- GS and LMW- GS increase, in addition, SDS- insoluble glutenin arithmetic mean diameter of volume weighted or surface weighted, dough quality （ development time and stability time） and bread quality （volume and score）are improved, too. The correlation analysis indicates that SDS -soluble glutenin glutenin content volume weighted content is significantly and positively correlative with dough and bread quality; while SDS -insoluble is not significantly correlative with quality, but SDS - insoluble glutenin arithmetic mean diameter of or surface weighted is significantly and positively correlative with dough and bread quality.