Determination of the distribution and redistribution of water and nitrogen in the soil is critical for the design and management of subsurface drip irrigation (SSDI). Laboratory experiments were conducted to investigate the effects of the emitter discharge rate (2 and 5.5 L h −1 ) and lateral depth (0 to 20 cm) on water and nitrogen distributions and redistributions under SSDI. The wetted soil area clearly decreased with the e...