pondage

Install a flush toilet with small pondage.

安贮水量小的抽水马桶。

This research discovered that soil pondage of level terrace were less than fallow sloping filed because of crops’ absorbing and using, and evaporation.

发现由于作物对梯田土壤水分的收利用，以及蒸发散的原因，导致水平梯田的土壤贮水量坡地小。