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›› 1994, Vol. 30 ›› Issue (5): 419-429.

• 论文及研究报告 • 上一篇    下一篇

杉木造林密度试验阶段报告

  

  1. 杉木造林密度试验过协作组
  • 收稿日期:1993-10-12 修回日期:1900-01-01 出版日期:1994-09-25 发布日期:1994-09-25

STAGE REPORT ON THE EXPERIMENT OF PLANTING DENSITY FOR CUNNINGHAMIA LANCEOLATA

  1. Coordinated Group of Experiment on the Planting Density of Chinese Fir;Address:The Research Institute of Forestry.CAF Beijing 100091
  • Received:1993-10-12 Revised:1900-01-01 Online:1994-09-25 Published:1994-09-25

摘要: 以南方14省(区)杉木栽培科研协作组划分的杉木带、区为基础,于1981年分别在广西、江西、福建、四川及河南各省设置5种密度的杉木造林试验林。经过10年试验结果,研究了密度对主要测树因子和木材质量的影响,还根据出材量和经济效益分析,确定了各带主要指数级的最佳初植密度。即南带。中带14—16指数级和北带12-14指数级每公顷以栽植5000株为宜;中带18指数级以上者,每公顷以栽植3333株为宜。

关键词: 杉木, 造林密度, 经济效益

Abstract: Based on the Cunninghamia lanceolata zone and region,which are divided in 14 southern provinces(regions)accordiog to the Chinese fir research coordinated groups,in 1981 the experimental plantations of Cunninghamia lanceolata were established in Guangxi,Jiangxi,Fujian, Sichuan and Henan Provinces,which consisted of 5 different densities.The measurements of 10 years showed that densities influenced the main growth parameters of trees and wood quality. According to the analysis of timber yield and economic benefit,the optimum initial planting densities for various index classes are determined,i.e.5000 trees per hectare are optimum for the index class of 14-16 in the south and middle zone, and for the index classes of 12-14 in the north zone, 3333 trees for those over 18 classes in the mid zone.

Key words: Cunninghamia lanceolata, Planting density, Economic benefit