不同林龄对亚热带尾叶桉人工林土壤养分影响研究  

Effects of Different Forest Ages on Soil Nutrients of Eucalyptus Urophylla Plantation in Subtropical

作　　者：颜权 彭志中 黄佳余 赵隽宇 陆星任 林海能 Yan Quan;Peng Zhizhong;Huang Jiayu;Zhao Junyu;Lu Xingren;Lin Haineng(State-owned Paiyang Forest Farm of Guangxi Zhuang Autonomous Region,Nanning,Guangxi,532500,China;State-owned Peak Forest Farm of Guangxi Zhuang Autonomous Region,Nanning,Guangxi,530001,China;Guangxi Range Rover Enterprise Management Service Group Co.,Ltd.,Nanning,Guangxi,530005,China;Guangxi Academy of Forestry Nanning,Nanning,Guangxi,530002,China;Guangxi Huawoote Ecological Fertilizer Co.,Ltd.,Nanning,Guangxi,530005,China)

机构地区：[1]广西壮族自治区国有派阳山林场,广西南宁532500 [2]广西壮族自治区国有高峰林场,广西南宁530001 [3]广西揽胜企业管理服务集团有限公司,广西南宁530005 [4]广西林业科学研究院,广西南宁530002 [5]广西华沃特生态肥业股份有限公司,广西南宁530005

出　　处：《绿色科技》2019年第16期13-16,共4页Journal of Green Science and Technology

基　　金：广西创新发展专项基金(编号:桂科AA17204065)

摘　　要：以广西南宁高峰林场一年生、两年生、三年生尾叶桉人工林为研究对象,测定分析了14项土壤物理、化学性质,通过主成分分析筛选出最小数据集,并运用隶属度函数进行了土壤质量评价。结果表明:不同林龄大部分土壤物理、化学性质差异显著,随着林龄增长,土壤容重显著升高,土壤pH值、孔隙度显著下降。二年生尾叶桉在有机质、全钾含量上优于一年生、三年生尾叶桉林地。土壤质量评价结果显示,二年生(0.578)>三年生(0.535)>一年生(0.461),土壤质量随着林龄增长先升高,后下降。建议在3年以上的尾叶桉林地及时进行追肥,以达到尾叶桉林地的速丰、增产目的。The 1a,3a Eucalyptus urophylla plantations in the Nanning Forest Farm in Guangxi Province were used to study and analyze 14 soil physical and chemical properties.The results showed that the soil physical and chemical properties of most forest ages were significantly different.With the increase of forest age,bulk density increased significantly.The2a is superior to the 1a and 3a in terms of organic matter and total potassium content.The results of soil quality evaluation showed that 2a(0.578)>3a(0.535)>1a(0.461)and the soil quality increased and then decreased with the increase of forest age.It is suggested that topdressing of Eucalyptus forests should be carried out in time for more than 3a to achieve the purpose of speed increase and increase production of Eucalyptus forest land.

关 键 词：不同林龄 尾叶桉 亚热带 土壤养分 

分 类 号：S758[农业科学—森林经理学]