Severe water deficit at seedling stage and wadding stage ,medium water deficit at buds and bolls stage can be propitious to cotton yield.

• 结果表明，调亏灌溉对棉花株高、蕾铃脱落、成桃数等影响较显著；苗期和吐絮期重度水分亏缺、蕾铃期中度水分亏缺均有利于棉花产量的形成。