饱和持水量（saturated moisture）也称饱和含水量，是指土壤孔隙全部充满水分时的最大含水量。饱和持水量包括吸湿水、膜状水、毛管水和重力水。饱和持水量由土壤性质决定，代表土壤的最大蓄水能力。
在饱和持水量的条件下，草地雀麦具有加速土壤水分散失的作用。
When the soil moisture is saturated, Bromus riparius can accelerate the loss of soil moisture .
火烧强度对上壤分散系数、孔隙度、饱和持水量、有效镁、细根系生物量的影响有显著差异。
The effects of forest fires on soil separate coefficients, porosity, saturated water-retaining capacity, available Mg, fine root significantly varied between the fire intensity.
当过量的水从饱和土壤中排出后，余下的水量被称为田间持水量。
The amount of water that remains after the excess has drained away from the saturated soil is known as the field capacity.
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