Study of calcium distribution in different organs of apple tree

The biomass, water content , calcium concentration and uptake in different organs of young fruit Red Fuji apple tree were studied in this paper. The results showed that the biomass of tree was 10. 19 kg;Calcium concentration of the above ground part from 5. 18 g/kg to 16. 66 g/kg,the roots system from 6. 60 g/kg to 11. 7 g/kg,total calcium uptake 74. 29 g, calcium uptake of above ground part and the roots 51. 38 g and 22. 91 g,respectively. Calcium concentratin of spring shoots was the highest. The dry weight of scaffold was the heaviest. In the newborn organs (fruits, leaves and spring shoots) of the tree, the dry weight of the leaves were highest,and calcium uptake was the same. The water content of different organs above ground in young organs was higher than that in old organs. The dry weight- of roots reduced along with the diameter in the same soil layer. In the same soil layer the water content of roots increased by the decreasing of the root diameter. In the same root diameter, the water content increased with the depth of the soil. The root in the diameter of 1. 0-5. 0 cm in the apple tree is the main structure. The calcium mainly stored in the scaffold and the root in 1. 0-5. 0 cm.