摘要
通过对福建省大田梅林国有林场30年生不同林分密度杉木人工林生长调查,结果表明,林分密度对杉木生长存在影响,密度为450、540和630株.hm-2的林分平均胸径分别为26.69、23.46和22.50 cm,差异显著,平均树高分别为20.33、18.78和17.29 m,差异不显著。从单株材积、蓄积量、出材量和出材质量看,林分密度以450株.hm-2最佳。
The growth of 30-year-old Chinese fir plantations of different densities in Da-tian Meilin State-Owned Forst Farm of Fujian Province was surveyed and the results showed that the density had a significant impact on the growth of Chinese fir, and the average DBHs of 450 plants hm-2, 540 plants lun-z and 630 plants lun-2 Chinese fir plantations were 26.69 cm, 23.46 cm and 22.50 cm, and the average heights were 20.33 m, 18.78 m and 17.29 m. In the regards of the individual volume, accumulation, amount of tlmber-producing and tlmber-producing quality, 450 ptants ~ hm-2 was the best planting density.
出处
《亚热带农业研究》
2012年第3期156-159,共4页
Subtropical Agriculture Research
关键词
杉木
林分密度
生长
影响
Chinese fir
stand density
growth
impact
