不同立地红心杉生长试验

Study on growth of Cunninghamia lanceolata with red-heart on different sites

福建省将乐国有林场利用从江西引进的红心杉母树林种苗造林,对6年生林分开展标准地调查分析,研究红心杉在将乐的栽培效果。结果表明红心杉表现较好,树高、胸径、材积平均值分别为5.75 m、7.3 cm和0.013 68m3。心材率较高,平均值为22.26%,红心杉木特点明显,偏心率和心材偏心率较低。木材基本密度较大,平均值为0.325 85 g/cm3。立地条件好的林地红心杉生长优良,立地条件差的林地红心杉生长较差。偏心率、心材偏心率、木材基本密度不受立地条件影响。在红心杉木造林时,应选择立地条件好的林地,以有效提高红心杉生产力。

A silviculture test of red-heart Cunninghamia lanceolata introduced from Jiangxi was conducted in Jiangle farm,Fujian province and the cultivation effects were studied based on growth of 6-year-old stands.The results showed that the average tree height,DHB and volume of the red-heart C.lanceolata stands were 5.75 m,7.3 cm and 0.013 68 m^3,respectively.The red-heart C.lanceolata was characterized by the higher heartwood rate with an average of 22.26% and higher the wood basic density with an average of 0.325 85 g/cm3.The eccentricity of wood and heartwood were also lower.Red-heart C.lanceolata grew significantly better in the good sites than in the poor sites,while the site conditions had no significant effects on the wood eccentricity and heartwood eccentrity as well as the wood density.Therefore,a good site should be used for planting red-heart C.lanceolata to increase productivity of red-heart C.lanceolata.