The results showed, the breakthrough curve of nitrate vertical transport in saturated condition was more or less non-symmetrical, mainly due to the different proportion of mobile and immobile water in the soil and soil physical properties.

• 结果表明，在饱和条件下，硝态氮垂直运移过程的穿透曲线呈现不对称形状和拖尾现象，主要由于土壤中存在著动水和不动水的比例不同和土壤的物理性质所致。