Foliar nutrition diagnose of red Fuji apple during different periodsin the Weibei Dry Highland of Shaanxi Province The study on controlling the rosette disease of red Fuji apple trees Effects of calcium infiltration treatment on enzymatic browning of red Fuji apples Response of nutrient backflux dynamics within Fuji trees to soil groundcover management approaches in East Gansu Province Effects of Different Calcium Fertilizers on Fruit Quality and Ca2+-ATPase Activity of Red Fuji Apple