不同树种混交对桉树生长量的影响  

The Effect of Mixing Different Tree Species on the Growth of Eucalyptus Trees

作　　者：朱其军 郭萍 吴跃海 李秋荔 胡雪玲 王子豪 ZHU Qijun;GUO Ping;WU Yuehai;LI Qiuli;HU Xueling;WANG Zihao(Qinlian State-owned Forest Farm of Guangxi Zhuang Autonomous Region,Qinzhou,Guangxi 535000,China)

机构地区：[1]广西壮族自治区国有钦廉林场,广西钦州535000

出　　处：《热带农业科学》2024年第4期48-52,共5页Chinese Journal of Tropical Agriculture

摘　　要：为探索出有利于巨尾桉Eucalyptus grandis×E.urophyllax生长的混交模式,以火力楠Michelia macclurei、刨花润楠Machilus pauhoi、红锥Castanopsis hystrix 3种广西本土阔叶树种为混交树种,与3年生巨尾桉混交,分析不同混交模式下桉树的生长情况。结果表明:巨尾桉与红锥混交时,巨尾桉的树高、胸径、单株材积最大且蓄积量最高,分别为16.80 m、14.16 cm、0.126 m^(3)/株、140.01 m^(3)/hm^(-2),显著高于巨尾桉+火力楠、巨尾桉+刨花润楠的混交模式。以红锥作为3年生巨尾桉混交树种,可以显著促进巨尾桉的生长,增加木材蓄积量。本研究结果可为桉树混交造林提供参考。This study aimed to investigate beneficial mixed planting patterns for promoting the growth of Eucalyptus grandis×E.urophyllax.Three native broadleaf tree species,namely,Michelia macclurei,Machilus pauhoi,and Castanopsis hystrix,were selected from Guangxi for mixing with three-year-old E.grandis×E.urophyllax.The growth of E.grandis×E.urophyllax was assessed under different mixed planting patterns.The results of this study revealed that the greatest differences in tree height,diameter at breast height,individual tree volume,and stock volume were detected when E.grandis×E.urophyllax were mixed with C.hystrix.These values were recorded as 16.80 m,14.16 cm,0.126 m^(3)·plant-1,and 140.01 m^(3)·hm^(-2),respectively.In comparison,the mixed planting patterns of E.grandis×E.urophyllax with M.macclurei and M.pauhoi yielded fewer measurements.Therefore,incorporating C.hystrix as a mixed tree species with three-year-old E.grandis×E.urophyllax can significantly enhance the growth of E.grandis×E.urophyllax and increase the volume of timber stock.This research result offers a viable reference for efficient E.grandis×E.urophyllax cultivation.

关 键 词：巨尾桉 火力楠 刨花润楠 红锥 混交模式 

分 类 号：S792.39[农业科学—林木遗传育种]