尾巨桉不炼山造林技术与增产效益分析  

Research on Benefits of Afforestation Without Burning for Eucalyptus urophylla × E. grandis

作　　者：林海源 

机构地区：[1]福建省华安利水国有林场,福建华安363803

出　　处：《桉树科技》2014年第3期41-44,共4页Eucalypt Science & Technology

基　　金：福建省林业厅科研项目"速生丰产用材林多功能近自然经营模式研究"[闽财(农)指2010113];"桉树人工林生态采伐更新技术研究"(闽林科20098)

摘　　要：尾巨桉不炼山造林技术研究表明：不炼山造林可使58 t·hm^-2（鲜重）采伐剩余物逐步转化为有机肥,造林当年可郁闭成林;1.5 a时,平均胸径、平均树高基本与炼山造林持平;5.5 a时,平均胸径、平均树高、单株材积和林分蓄积均高于炼山造林,但未达到显著差异,保存率低于炼山造林,主要原因为林木后期生长快,导致风折风倒。不炼山造林人工费比炼山造林增加30.7%-42.1%,采伐剩余物保留成本21.0-28.8元·t^-1。5.5 a时,因增产而增收的是营林成本增加的2.8-3.8倍。推广尾巨桉不炼山造林应重点抓好7个关键技术环节。Research on establishment of Eucalyptus urophylla × E. grandis without burning in the site preparation regime showed that： non-burning site preparation for plantation establishment resulted in 58 t·hm^-2 of logging slash remaining in situ to provide organic fertilizer. At 1.5 years, average DBH and tree height was the same as plantations established with burning in the site preparation regime. At 5.5 years, average DBH and tree height, individual volume, and also stand accumulation were higher with non-burning site preparation compared to site preparation with burning, but the differences were not significant. Afforestation survival rates achieved following site preparation with non-burning were lower than those achieved with burning in the site preparation regime. Labor costs for non-burning site preparation and establishment were 30.7% to 42.1% higher than when using burning in the site preparation regime, due to logging slash removal costs of RMB 21.0 to 28.8 yuan per ton. At 5.5 years, increased volume production with afforestation involving non-burning site preparation resulted in a 2.8 to 3.8 fold increase in income. In order to promote the E. urophylla × E. grandis non-burning mountain afforestation, seven key technologies need to be focused on.

关 键 词：不炼山造林 增产效益 关键技术 尾巨桉 

分 类 号：S725.79[农业科学—林木遗传育种]