Mineral nutritional characteristics of different organs in fruit-bearing tree of Myrica rubra Lour
In order to reveal the variation and distribution characteristics of mineral elements in Chinese bayberry , 8 years old young trees and adult fruit-bearing trees of Dongkui were used as plant materials , and mineral elements contents (including N, P, K, Ca, Mg, S, Fe, Mn, B, Zn and Cu) in diffrent organs were investigated at flores-cence, young fruit stage, autumn growth period and dormant phase .The result suggested that contents of N , K, Ca, Fe and Mn varied greatly in different organs and different growth stages , and contents of P , S, Cu, Mg and B had no significant difference .Content of N was the highest in leaves of both the young trees and adult fruit -bearing trees , and followed by the branches .Content of K was much higher in branches and leaves of the young trees , and it was the highest in fruit of the adult fruit-bearing trees , followed by the branches and leaves .Content of Ca was the high-est in branches , with the content higher than 6 g· kg-1;and it was the lowest in fruit , with the content less than 0.6 g· kg-1 .Content of Mn was much higher in leaves and branches , and content of Fe was much higher in roots .In the adult fruit-bearing trees, contents of N, Mn, Zn were increased, and contents of P, Fe were declined, when com-pared with the young trees .The results might provide principle of fertilization for management of mineral nutrition in the production of Chinese bayberry .
Chinese bayberryyoung fruit-bearing treeadult fruit-bearing treemineral nutrition