Abstract: The study aims to explore the effects of different nitrogen and potassium panicle fertilizer treatments on MIHR’s dry weight, leaf area, growth and yield in Jianghuai Region and provide references for rational panicle fertilizer application. The results showed that the leaf area and dry weight of nitrogen and potassium panicle fertilizer treatment were higher than those of pure nitrogen panicle fertilizer or no panicle fertilizer, the yield of nitrogen and potassium panicle fertilizer treatment was higher than that of no panicle fertilizer treatment, and the yield of nitrogen and potassium panicle fertilizer treatment was higher than that of pure nitrogentreatment; the best fertilizer application level in Jianghuai Region was pure nitrogen 78.75to112.5kg/hm2 combinedwithK2O76.5 kg/hm2.