The study compared using soil testing to determine fertilizer amounts for maize crops with traditional fertilization methods. The results showed that using soil testing led to a higher maize yield, with an increase of 65.3kg per 667m2 compared to traditional methods. Additionally, the NPK fertilizer utilization rate was higher with soil testing, showing increases of 9.40%, 3.08%, and 6.22% for different nutrients. This means that using soil testing for fertilizer application can improve maize yield, reduce costs, and increase the efficiency of fertilizer use.