Abstract: Application technologies of K, Mg and S for the first and second Baxi banana plant were studied. The vegetative growth, floral emergence, fruit’s agronomic characteristics, fruit yield and plantation efficiency of different fertilizer combinations including K, Mg and S were compared. Proper use rates of N and K were recommended for two generation Baxi banana, and it was pointed out that if soil was rich in Mg and the ratio of Mg/K was even low to 1.37, Mg was not necessary to be used in banana’s production.