尾巨桉与黑木相思混交林初期生长效应  

Initial Growth Effects of Mixed Eucalyptus urophylla×E.grandis and Acacia melanoxylon Plantations

作　　者：覃泽凡 郭萍 黄福 黄宗先 项翠芳 王子豪 QIN Zefan;GUO Ping;HUANG Fu;HAUNG Zongxian;XIANG Cuifang;WANG Zihao(Guangxi Zhuang Autonomous Region State-owned Qinlian Forest Farm,Qinzhou 535000,Guangxi,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：《桉树科技》2024年第3期42-46,共5页Eucalypt Science & Technology

摘　　要：为探索桂南地区桉树人工林混交林模式,本研究以尾巨桉和黑木相思作为混交树种,对4种混交比例下1.5年生的尾巨桉和黑木相思的生长情况与同龄的纯林进行比较和分析。结果表明:一定比例混交模式下尾巨桉和黑木相思的树高、胸径及枝下高均高于相对应的纯林,其中尾巨桉×黑木相思(3∶1)的混交模式对两树种的促进效果最好,其树高、胸径和枝下高分别比尾巨桉纯林、黑木相思纯林提高了37.1%、28.2%、20.5%和11.8%、31.1%、32.7%。To investigate mixed patterns of Eucalyptus plantations in southern Guangxi,this study compared and analyzed the growth of 1.5-year-old E.urophylla×E.grandis and Acacia melanoxylon under four different mixing ratios,alongside their 1.5-year-old pure plantations.The results indicated that at certain mixing ratios,the height,diameter at breast height(DBH),and height to the first branch of both E.urophylla×E.grandis and A.melanoxylon surpassed those in their respective pure plantations.Among the mixed patterns,the E.urophylla×E.grandis×A.melanoxylon(3︰1)ratio demonstrated the most pronounced growth enhancement for both species,with increases of 37.1%,28.2%,and 20.5%in height,DBH,and height to the first branch,respectively,compared to pure E.urophylla×E.grandis plantations,and 11.8%,31.1%,and 32.7%compared to pure A.melanoxylon plantations.

关 键 词：尾巨桉 黑木相思 混交比例 生长效应 

分 类 号：S714.8[农业科学—林学]