Study on Container Seedlings Growth Rhythm of Two Native Broad-leaved Species

Growth rhythm of 1-year container seedlings of Castanopsis sclerophylla and Cyclobalanopsis glauca was studied by observations and regression analysis.The math models were established for the correlation between organs growth and stage of two tree seedlings and of that between organ growth and height growth.The results indicated that correlation among height and ground diameter growth,and growth stage was power function: y = a tb.While relationship among growth of root,diameter and height growth was linear correlated: y = a+bx.Fitting models showed the same growth rhythm and models and correlations among each organ were significant difference.