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当前位置: 首页 > 文章 > 杉木大径材高效培育技术探讨 南方农业学报 2015 (2) 293-298
Position: Home > Articles > High-efficient management technology of big-diameter timber of Cunninghamia laceolata Journal of Southern Agriculture 2015 (2) 293-298

杉木大径材高效培育技术探讨

作  者：
陈代喜;陈琴;蒙跃环;黄开勇;黄海仲;刘凡胜;韦家国;莫亮荣
单  位：
广西林业科学研究院;南丹县山口林场
关键词：
杉木;大径材;立地指数;保留密度;高效培育技术
摘  要：
【目的】探讨杉木大径材培育技术,促进杉木大径材科学经营。【方法】调查南丹县山口林场杉木大径材示范林,分析不同种质来源、立地条件和保留密度对培育大径材杉木效果的影响。【结果】良种林分的杉木年均生长量、生长量及大径材比率均极显著(P<0.01,下同)或显著(P<0.05,下同)高于对照(普通种);在21年生时,良种林分杉木大径材株数比率和单位面积蓄积量分别比对照高5.4和7.4倍。立地指数对杉木大径材林分生长具有极显著或显著影响,保留密度对林分生长的影响在不同立地条件下表现不同。立地指数在20以上(含20)适宜培育大径材杉木,其最佳保留密度为800~900株/ha;立地指数为18适宜培育大、中径材杉木,其最佳保留密度为800~1100株/ha;立地指数为16适宜培育中径材杉木,其最佳保留密度为800~1200株/ha。【结论】采用杉木良种,在立地指数20以上、保留密度800~900株/ha条件下,可高效培育大径材杉木。
译  名：
High-efficient management technology of big-diameter timber of Cunninghamia laceolata
作  者：
CHEN Dai-xi;CHEN Qin;MENG Yue-huan;HUANG Kai-yong;HUANG Hai-zhong;LIU Fan-sheng;WEI Jia-guo;MO Liang-rong;Guangxi Zhuang Autonomous Region Forestry Research Institute;Shankou Forest Farm of Nandan County;
关键词：
Cunninghamia laceolata;;big-di ameter timber;;site index;;reserve density;;high-effecient management technology
摘  要：
【Objective】The cultivation technology of Chinese fir big-diameter timber was studied to promote scien-tific management of big- diameter timber plantation. 【 Method 】 The big- diameter timber demonstration plantations at Shankou Forest Farm in Nandan County were investigated to analyze the effects of different germplasm sources, site conditions and reserve densities on big-diameter timber cultivation. 【Result 】The mean annual growth,growth and big-diameter timber ratio of Chinese fir from improved variety stands were extremely significant or significant higher than those of common species stands used as control(P<0.05 or P<0.01, the same below). As for 21 years old Chinese fir,the big-diameter timber quantity ratio and its per unit area volume of the plantations were improved by 5.4 times and7.4 times respectively than that of the control. The growth of Chinese fir big-diameter timber stands was significantly affected by the site indexes. The reserve density had different effects on the growth of stands with different site indexes.Under the site condition with site index above 20( including 20),it was good for cultivating Chinese fir big-diameter timber with the best reserve density of 800-900 plants per hectare. Under the site condition with site index of 18,it was good for cultivating Chinese fir big-diameter timber or middle-diameter timber with the best reserve density of800-1100 plants per hectare. Under the site condition with site index of 16,it was good for cultivating Chinese fir middle-diameter timber with the best reserve density of 800-1200 plants per hectare. 【Conclusion 】Using improved variety and under the site condition with site index above 20(including 20),it is good for cultivating big-diameter timber of Chinese fir with the best reserve density of 800-900 plants per hectare.

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