中文摘要：

通过样地调查对桂北地区广西国有黄冕林场木荷胸径、树高、枝下高及冠幅等生长性状及其相关性进行分析,结果表明：随径阶的增大木荷枝下高未随树高的增加而增加,而相同径阶不同立地条件枝下高变化趋势与树高变化趋势相似;桂北地区海拔660 m的木荷林分生长状况显著低于海拔420 m以下的木荷林分生长状况;造林密度对木荷林分生长状况影响显著,株距×行距为2 m×2 m的造林密度是比较适合的桂北木荷造林规格;造林前应对坡位较高的山脊和防火林带施以促长手段;木荷自然生长过程中分叉较突出,经营者应适时采取间伐、修枝等措施调控林分密度。

英文摘要：

Analysis was made of the growth factors and correlation of diameter, tree height, height under branch and crown width of Schima superba in Huangmian Forest Farm in northern Guangxi. The results showed that ,the diameter would not increase along with the increase of height under branch. Under the same diameter and different site conditions, the change of height under branch was similar to tree height. The growth of Schima superba at 660 metres above sea level was lower than the growth at elevations below 420 meters. Afforestation density had an obvious influence on the growth of Schima superba. Afforestation density of 2 m ×2 m row spacing was suitable for Schima superba planting. Before platnting, some ways should be adopted to make trees grow well on the high ridge and the firebreak tree belt. Schima superba trees were apparently bifurcated in the process of naturally growing,thus some measures, such as thinning and pruning, should be taken to control the stand density.