山桂花地径生长规律研究  

Ground Diameter Growth of Paramichelia baillonii

作　　者：徐玉梅[1] 杨德军[1] 邱琼[1] 钟萍[1] 陈勇[1] 杨利华 陈显兵 XU Yu-mei;YANG De-jun;QIU Qiong;ZHONG Ping;CHEN Yong;YANG Li-hua;CHENG Xian-bin(Institute of Tropical Forestry,Yunnan Academy of Forestry Sciences,Puwen Yunnan 666102,P.R.China;Forestry Research Institute of PU’er Municipality,PU’er Yunnan 665000,P.R.China;Jinghong Forestry and Grassland Bureau,Jinghong Yunnan 666100,P.R.China)

机构地区：[1]云南省林业科学院热带林业研究所,云南普文666102 [2]普洱市林业科学研究所,云南普洱665000 [3]景洪市林业和草原局,云南景洪666100

出　　处：《西部林业科学》2019年第4期108-113,共6页Journal of West China Forestry Science

基　　金：重点研发项目“云南主要珍贵用材树种高效经营技术研发与示范“(2018BB007),“云南热带珍贵用材树种高效培育技术推广”(2018ts10)

摘　　要：对150年生山桂花天然林地径生长特点进行研究,同时与相同环境下35年生人工林地径生长量进行了对比,结果表明:(1)研究地山桂花人工林的土壤理化性质整体上优于山桂花天然林的土壤理化性质.(2)山桂花天然林地径生长曲线呈双S型,表明其有2个速生阶段.(3)山桂花天然林的连年生长量龄级生长曲线变化有5个生长高峰,分别是第6龄级、9龄级、11龄级、13龄级、17龄级.其中峰值更高、 曲线更陡的是第17龄级(9.33cm),是整个连年生长量龄级变化值最大的龄级.其次是第13龄级(8.88cm),再次是11龄级(8.2cm),峰值最小的是第6龄级(6.73cm).(4)在相同环境下,35年生山桂花人工林地径生长量是山桂花天然林地径生长量的1.93倍,说明人工培育可大幅提高山桂花生长速度、 缩短培育时间.The growth characteristics of ground diameter of Paramichelia baillonii growing naturally for 150 years were studied by comparing with trees from 35-year-old plantations under the same environment condition.The results showed that:(1)the physical and chemical properties of soil in P.baillonii plantation was generally better than that of natural forest;(2)The growth curve of ground diameter of natural P.baillonii was double S-shaped,indicating that it had two fast-growing stages;(3)The annual growth curve of natural P.baillonii had five growth peaks,which were 6,9,11,13 and 17 years old respectively.The highest peak and steeper curve were in the 17th age class(9.33cm),which was the age class with the greatest change in the whole process,the second was the 13th age class(8.88cm),and the third was the 11th age class(8.2cm),and the lowest peak was the 6th age class(6.73cm);(4)Under the same environmental condition,the diameter growth of 35-year-old P.baillonii plantation was 1.93 times of natural forest,and this indicated that artificial cultivation could greatly increase the growth rate and shorten the cultivation time of P.baillonii.

关 键 词：山桂花 地径 土壤理化性质 龄级 

分 类 号：S792.99[农业科学—林木遗传育种]