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采用盆栽方法，全生育期控水条件下，研究不同土壤水分胁迫对冬小麦生长发育和产量形成的影响。结果表明：随土壤水分胁迫加剧，生长发育受抑制程度加重，地上部受抑制的程度较地下部为重。干物质积累减少，籽粒物质来自贮藏同化物的比例上升，产量下降，产量三因子中穗粒数、穗数下降较大，但千粒重无显著差异。重度胁迫与中度胁迫和适宜水分处理差异显著，而轻度胁迫和适宜水分处理差异不显著，可以认为相对含水量６０％为冬小麦正常生长发育并形成高产的一个重要的指标下限。
The effects of different soil water stress on the growth and yield formation of winter wheat were studied by using potted method and water control during the whole growth period. The results showed that with the aggravation of soil water stress, the degree of inhibition of growth and development was aggravated, and the inhibition of aboveground part was heavier than that of the underground part. The dry matter accumulation decreased, the proportion of grain matter from storage assimilates increased, the yield decreased, the number of spike grains and spikelets in the three factors of yield decreased greatly, but the grain weight of 1000 grains had no significant difference. There was significant difference between moderate and moderate stress treatments for moderate and severe stresses, but no significant difference for mild and appropriate treatments. The relative water content of 60% could be regarded as an important lower limit of normal wheat growth and high yield.