Evaporation influenced the soil water distribution mainly in the upper soil layer at the initial stages of irrigation. Less irrigation frequency would lead to greater uneven water distribution.

• 蒸发和灌水频率对风干土壤中水分分布的影响表现为：1)有、无蒸发条件下土壤水分差异在灌水初期主要体现在上部土层，此时，灌水频率越低，此区水分差异越大；