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研究了5年生钟萼木幼树株高、地径连年生长、侧枝分生特性。结果表明,调查群体5年生株高、地径平均值、最大值与最小值分别为2.0 m、3.4 m、0.5 m和3.2 cm、9.5 cm、0.5 cm;群体幼树株高、地径生长分布遵循正态分布;幼树群体的株高、地径生长在早期表现显著的遗传分化。1～5年生幼树的株高、地径年生长量表现为:株高在前3年表现较低生长量,第4、5年明显加快;地径在第1年生长量占比较大。幼树株高小于2.0 m的个体未发现分生侧枝,冠幅小且高生长较缓慢。
Studied the 5-year-old bell calyx saplings height, diameter year after year growth, lateral branch meristematic characteristics. The results showed that the 5-year-old plant height, average diameter, maximum and minimum values were 2.0 m, 3.4 m, 0.5 m and 3.2 cm, 9.5 cm and 0.5 cm, respectively. Follow the normal distribution; young tree population height, diameter growth in the early significant genetic differentiation. The plant height and diameter of 1 to 5 year-old sapling showed that the growth of plant height was lower in the first 3 years and significantly faster in the 4th and 5th years. The growth of ground diameter accounted for a larger proportion in the first year. Individuals with young plant height less than 2.0 m were not found in meristematic branches with small crown width and slower growth height.