浙江及皖东丘陵地区火炬松生长分析  

Growth Analysis of Loblolly Pine in Hilly Area of Zhejiang and Eastern Anhui Province

作　　者：迟健[1] 李桂英[1] 李春发 曾文胜[1] 陈学堂 张建中 

机构地区：[1]中国林业科学研究院亚热带林业研究所,安徽省黄栗树林场,浙江省临海市林场,安徽省夏家渡林场

出　　处：《林业科学研究》1994年第4期437-442,共6页Forest Research

基　　金：国家攻关课题

摘　　要：浙江及皖东丘陵地区火炬松生长分析迟健，李桂英，李春发，曾文胜，陈学堂，张建中关键词火炬松，生长分析，密度我国引种美国南方松已有４６ａ历史，大规模引种在７０年代中期开始，这些树种在我国南方丘陵地区生长通常良好［１，２］。其中浙江引种南方松５０００多ｈｍ...According to the data of 31 sample plots and 19 analytical trees of loblolly pine in Eastern Anhui and Northwest and Southeast of Zhejiang Province,it shows that the site index of the area,where the loblolly pines are distributed is 10～24 in general,mostly 14～18.In the region of site index 20～24,the interlock point of the average yearly growth of height and the successive yearly growth is at the age of 8 for the tree height and at the age of 10 for the DBH; while in the region of site index 14～18,they are at the age of 12 and 10 respectively;while in the region of site index 10～12,the interlock point for DBH is post-poned to the age of 16.In the regions of above mentioned three site indexes,the successive yearly growth of volume and the average growth of volume doesn′t meet at the age of 20.Another analysis shows that the correlation coefficient for the density and diameter is r=0.652 87·;while for the diameter with bark 0.368 4+1.074 850x(x is the diameter without bark).In the investigated area,the form-factor of the loblolly pine is 0.58 at the age of 。10;0.54 at the age of 15; 0.49 at the age of 20. The regression equation for crown width and diameter is=0. 88+0. 188 9x(x is DBH),which has a significant correlation.The height-diameter ratio of this tree species changes with the change of region and cultivation density,when it is at the age of 15～20,the regression equation for density(trees/hm2)and DBH is=46.32+0.096 4x(x is density).The suitable cultivation density is 1 800 trees/hm2.

关 键 词：火炬松 生长分析 密度 浙江 丘陵区 

分 类 号：S791.255[农业科学—林木遗传育种]