Coupling effects of water and potassium on the nutrient absorption and yield of Banana

Effects of micro-spray irrigation coupling with water and potassium were studied on the nutrient absorption and yield of banana. The result indicated that banana of high-water and high-potassium treatment have the high yield with 2781.6 kg/667m2 and the best absorption of nitrogen, potassium and calcium, respectively with 86.14 g/plant, 326.23 g/plant and 32.13 g/plant. Under low-water condition, the low-potassium increased absorption of nitrogen, phosphorus, potassium by 15.44%/29.02%and 6.40%, improving yield by 23.17% compared with the high-potassium.