摘要
为利用萌芽更新培育柚木小径材,以10年生柚木人工林的萌条为研究对象,分析伐桩径级和高度对萌条生长的影响。结果表明,不同伐桩径级对萌条生长的影响显著;在5~30 cm内,伐桩径级越大,萌条平均基径和最大基径越大、平均高度和最大高度越高、数量越多。不同伐桩高度等级间萌条平均基径、平均高度、最大基径及最大高度差异不显著,萌条数量差异显著。伐桩高度为10~15 cm时,萌条生长最优。萌条基径与高度呈极显著正相关。柚木萌条生长受到伐桩基径、伐桩高度和萌条数量共同影响。
To cultivate small diameter timber of Tectona grandis by coppicing regeneration,taking sprouts of 10-year-old T.grandis plantations as research objects,effects of diameter and height of stumps on sprout growth were analyzed.Results showed that sprout growth was significantly affected by stump diameters.Average base diameter,average height,number,maximum base diameter and maximum height of sprouts increased with in⁃crease of stump diameter within 5-30 cm.There were no significant differences in average base diameter,aver⁃age height,maximum base diameter and maximum height of sprouts within different stump height classes and there was significant difference in sprout number.When stump height was 10-15 cm,sprouts grew best.There was extremely significantly positive correlation between base diameter and height of sprouts.Growth of T.gran⁃dis sprouts was influenced by stump diameter,stump height,and sprout number.
作者
杨保国
曾莉
黄旭光
韩雪蓉
郝建
莫世宇
邹海龙
陈建全
Yang Baoguo;Zeng Li;Huang Xuguang;Han Xuerong;Hao Jian;Mo Shiyu;Zou Hailong;Chen Jianquan(Experimental Center of Tropical Forestry,CAF,Pingxiang,Guangxi 532600,China;Guangxi State-owned Gaofeng Forest Farm,Nanning,Guangxi 530001,China;Ecological Environment Monitoring Center,Nanning,Guangxi 530028,China)
出处
《广西林业科学》
2021年第4期403-407,共5页
Guangxi Forestry Science
基金
中央级科研院所基本科研业务费专项资金项目(CAFYBB2020MB006)
“十三五”国家重点研发计划子课题(2016YFD0600602-1)。
关键词
萌芽更新
柚木
伐桩直径和高度
coppicing regeneration
Tectona grandis
stump diameter and height
