The study looked at how using salty water for irrigation affects soil, groundwater, and crop growth in Inner Mongolia. They found that using a mix of Yellow River water and salty groundwater for irrigation can increase soil salt levels. By controlling the amount of salty water used and using Yellow River water in the fall, soil salt levels can stay balanced each year. The researchers discovered that crop growth and yield were not affected by using salty water for irrigation. They also found that using salty water for irrigation does not harm the environment and can help with water shortages in the Hetao irrigation districts.