The researchers studied how different combinations of nitrogen, phosphorus, and potash fertilizers affect wheat yield and nutrient use efficiency. They found that the maximum wheat yield occurred when specific amounts of each fertilizer were applied. Nitrogen had the biggest impact on wheat yield, followed by phosphorus and potash. Combining all three fertilizers improved the absorption of nutrients by wheat plants. The highest nutrient use efficiency was seen with a certain level of nitrogen application, while the lowest efficiency was with a different level of nitrogen. Phosphorus and potash fertilizers showed similar trends in nutrient utilization.