Zinc nutrition has been an important factor of the limitation of yield and quality in apple trees. The physiological diseases such as rosette leaves and short branch internode occurred as a result of zinc deficiency in apple trees, however, there was no good effect by supplying zinc in a normal way. In order to master the dynamic changes of absorption and transportation of zinc, the relation of zinc to other elements, and the effect of zinc on growth and metabolism function of apple tree under zin...