摘要
为了制定赣南八角苗木的分级标准,提高八角苗木造林质量,结合造林试验,开展以1~2年生八角苗木的苗高、地径指标为主的分级标准研究。结果表明,1年生苗木合格苗率低,出圃后造林成活率低,不宜出圃;2年生苗木合格苗率85%,造林平均成活率87.5%,均达到质量要求。经聚类分析,得出2年生八角苗木分级标准为Ⅰ级苗：苗高≥65 cm,地径≥0.74 cm;Ⅱ级苗：65 cm〉苗高≥45 cm,0.74 cm〉地径≥0.43 cm;Ⅲ级苗：苗高〈45 cm,地径〈0.43 cm。
In order to establish the grading standards for lllicium verum seedlings and to improve its afforestation quality in Gannan, we studied 1 - 2 year seedling of lllicium verum based on height and ground diameter as the main indicators in this paper, and combining with its afforestation experiment. Results that 1-year seedling was, while its qualified seedling rate and survival rate were low, not suitable for afforestation, for 2-yearseedling, its qualified seedling rate was 85 %, and the average survival rate of afforestation was 87. 5 %, which reached the requirements of the quality. The study on K-means cluster for 2-year seedlings concluded, that the ground diameter and height of first grade seedlings was 0. 74 cm and 65 cm, those of the second-grade ones 0.43 cm ~ 0. 74 cm and 45 cm ~65 cm,and the third grade ones for 0.43 cm,45 cm,respectively.
出处
《福建林业科技》
2016年第2期177-180,共4页
Journal of Fujian Forestry Science and Technology
基金
中央财政林业科技推广示范资金项目(八角引种栽培技术推广与示范
JXTG[2013]09号)
关键词
八角
苗木分级
赣南
Illicium verum
seedling grading
Gannan
