选用耐湿性不同的三个栽培品种，运用人工模拟湿害的试验方法研究孕穗期湿害对冬小麦灌浆特性及产量的影响。结果表明：孕穗期湿害使籽粒灌浆期缩短；籽粒鲜重、干重下降；灌浆速率降低；单穗结实粒数和千粒重及经济产量下降。其生理原因是由于叶片Ｐｎ、叶绿素含量、单茎绿叶数、单茎地上干重、单茎地下干重和根系活力的下降所致。 Three cultivars with different moisture tolerance were selected to study the effects of wet booting on grain filling characteristics and yield of winter wheat by artificial simulated wet injury test. The results showed that: the wetting at the booting stage shortened the grain filling period; the fresh weight and the dry weight of the grain decreased; the filling rate decreased; the grain number per panicle and 1000-grain weight and the economic yield decreased. The physiological reason is due to leaf Pn, chlorophyll content, number of single stems and leaves, dry weight on a single stem, single stem underground weight and root activity decreased.