密度和施肥对滇南尾巨桉人工林生长的影响  

Effects of Spacing and Fertilization on the Growth of Eucalyptus urophylla × E. grandis Plantation in Southern Yunnan

作　　者：李光友[1] 徐建民[1] 罗亚春 陆海飞 张云东 罗玄 杨宝贵 梁保智 谭礼文 Li Guangyou;Xu Jianmin;Luo Yachun;Lu Haifei;Zhang Yundong;Luo Xuan;Yang Baogui;Liang Baozhi;Tan Liwen(State Key Laboratory of Research Institute of Tropical Forestry,Chinese Academy of Forestry,Guangzhou Guangdong 510520,China;Weiguo Forestry Bureau of Pu'er City,Pu'er Yunnan 665100,China)

机构地区：[1]中国林业科学研究院热带林业研究所国家重点实验室,广东广州510520 [2]普洱市卫国林业局,云南普洱665100

出　　处：《西南林业大学学报（自然科学）》2022年第3期1-9,共9页Journal of Southwest Forestry University：Natural Sciences

基　　金：“十三五”国家重点研发计划课题(2016YFD0600503)资助;中国林业科学研究院基本科研业务费专项(CAFYBB2017ZA001-5,CAFYBB2018SZ002)资助。

摘　　要：以云南卫国林业局小黑江尾巨桉无性系林为研究对象,采用5种密度、4种施肥处理下的4.5年生尾巨桉调查数据进行生长及效益比较分析,评价不同处理间差异及处理组合优选模式,揭示不同密度与施肥措施对人工林生长的影响。结果表明:施肥、密度处理分别对林分生长和效益影响差异显著,单位面积蓄积排序以施肥4,效益以密度5、施肥4为最佳;整体上,林分生长以施肥试验好于密度试验,相同密度的施肥1和密度2,生长及效益均以施肥1更好,主要原因可能与坡位有关;通过单因素的生长和效益分析,以施肥4即基肥中添加泥炭土和密度5即株行距2.5 m×4 m的处理为最优,如存在交互效应,还需关注施肥4、施肥2与密度5、密度4的相互组合模式,并加以验证,获得在交互作用下的最优组合,找到值得推广的模式。Taking Eucalyptus urophylla × E. grandis clone plantations in Xiaoheijiang of Yunnan Weiguo Forestry Bureau as the research object, the growth level and benefit of E. urophylla × E. grandis plantations were compared and analyzed by using the 4.5-year investigation data under 5 densities and 4 fertilization treatments.The differences among different treatments and the optimization model of treatment combinations were evaluated to reveal the effects of different spacing and fertilization treatments on the growth of plantation. The findings indicated that the effects of the growth level and benefit according to different fertilization and spacing management on stand were significantly different. The highest volume/hm2 was fertilization 4, and the best benefit of 1hm2 was spacing 5 and fertilization 4;on the whole, the volume/hm2 of fertilization experiment was better than those of spacing experiment. For the same spacing of fertilization 1 and spacing 2, the growth level and benefit of fertilization 1 in 1 hm2 was better that of spacing 2, and the main reason might be related to slope position;through the single factor growth and benefit analysis, the treatment of fertilization 4(adding peat soil to basal fertilizer) and spacing 5(2.5 m×4 m) are the best. If there is interaction effect between fertilization and spacing management, we need to pay attention to the combination treatment among fertilization 4, fertilization 2, spacing 5and spacing 4, and verify the interaction, so as to obtain the optimal combination under the interaction and find the mode worthy of promotion.

关 键 词：密度 施肥 尾巨桉 无性系 蓄积量 效益分析 

分 类 号：S72[农业科学—林木遗传育种]