After jointing, winter wheat was subsurface drip-irrigated at three rates (amount per application): D1 = 45 mm, D2 = 37.5 mm,and D3 = 30 mm. A basal 120 N at kg ha−1as ammonium nitrate,P at 90 kg ha−1as calcium superphosphate, and K at 30 kg ha−1 as potassium sulfate were applied for all plots.