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用盆栽对冬小麦在不同生长时期进行不同程度的调亏试验的结果表明，冬小麦从拔节至开花期间的轻度水分亏缺对其产量有明显影响，而灌浆和返青时间的轻度水分亏缺对产量无影响。各生育时期在不同调亏水平下的产量敏感指数（或敏感系数）不同。冬小麦经过一定的亏缺处理，复水后出现生长方面的补偿效应，因而产量降低幅度与耗水量减少幅度相比要小得多。气孔阻力和叶水势对土壤水分的变动有一阈值反应，只有当土壤含水量降至田间持水量的６０％以下时，气孔阻力和叶水势才发生显著变化。
The results of pot experiment on different deficiencies of winter wheat at different growth stages showed that the slight water deficit during winter wheat stage from jointing to flowering had a significant effect on the yield of winter wheat and the slight water deficit on the time of filling and rejuvenation Yield no effect. Yield sensitivity index (or sensitivity coefficient) at different developmental stages was different at different growth stages. Winter wheat after a certain deficit treatment, rehydration after the growth of the compensation effect, so the yield reduction and water consumption reduction rate is much smaller. Stomatal resistance and leaf water potential have a threshold response to soil moisture change. Stomatal resistance and leaf water potential change only when the soil water content is reduced to below 60% of the field capacity.