Three wheat (Triticum aestivum) varieties,‘Dexij86-33-25' ‘Ke 26' and ‘Lumai No.10’,were exposed to different concentrations of NaCl-Na₂SO₄ (0-50-150mmol/L) in a controlled pot culture system for 40 days.Fresh weights of roots, dry weights and the sodium and potassium contents of stems,leaves and roots were measured to determine growth rates of wheat plants, K/Na ratios, Na uptake rates, Na transport rates and K-Na selectivity ratios (S_K,Na).