| 摘要: |
| 4 种不同种植密度的卷荚相思 Acacia cincinnata 在种植 4 a、12 a 后的观测结果显示：卷荚相思
不同种植密度对林木高生长无显著影响，但对其胸径、生长和保存率有显著影响；密度对林木材积生长具
有一定影响，它与林分单株材积呈负相关，其关系式可用 V = a x -b 来表示。4 a 生林分材积与密度呈正相
关，在密度 1.5 m×3 m 时达到最高。12 a 生林分因显著的林分效应与保存率变化，低密度（3 m×3 m）林
分材积达到最高，最低林分密度与最高林分密度保存率相差 15.54 个百分点；试验证明卷荚相思在饶平培
育小径材可考虑选用 1.5 m×3 m 株行距，而培育中、大径材选用 3 m×3 m 株行距更为适宜。 |
| 关键词: 饶平 卷荚相思 速生树种 种植密度 生长表现 |
| DOI： |
| 投稿时间：2020-05-31修订日期：2020-08-17 |
| 基金项目: |
|
| Growth Performance of Acacia cincinnata with different Planting Density in Raoping |
| xiaoshu,chenyingbiao,wangjunlin |
| (Forestry Institute of Raoping,Raoping) |
| Abstract: |
| The observation results of 4 different planting densities of Acacia cincinnata showed that: planting
densities of Acacia cincinnata had no significant influence on the growth of tree height, but had significant influence
on its’ DBH, growth and survival rate. The planting density had a certain influence on the growth of timber volume,
it was negatively correlated to the individual volume of stand and the relationship could be expressed by V = a x -b
.
There was a positive correlation between stand density and stand volume for 4-year plantations, reaching the highest
at the density 1.5 m×3 m. The stand volume reached the highest at the density 3 m×3 m for 12-year plantations
owing to the distinct stand effect and changes in conservation rate, and generate a 15.54% difference between the
lowest and highest stand density. The research proved that the 1.5 m×3 m row spacing could be considered for
cultivation of small-diameter timber, while 3 m×3 m row spacing was more suitable for medium diameter and largediameter timber in Raoping. |
| Key words: Raoping Acacia cincinnata fast growing tree species planting density growth performance |
