马尾松大径材培育生长效果调查

Growth Effect Investigation on Cultivating Large Diameter Timber of Pinus massoniana

对8,13,26,39 a不同林龄马尾松林分进行了调查.大径材定向培育的试验结果初步表明:在立地条件相似、经营措施相同的林分,马尾松胸径、树高、冠幅等生长指标差异不显著;在不同经营类型的林分中,马尾松胸径、树高、冠幅等生长指标存在显著差异.由此可见,在定向培育马尾松大径材过程中,应尽早采取得当的经营措施.

The different stands of Pinus massoniana with 8,13,26,39 a were investigated.The experiment results of Pinus massoniana with large-diameter timber in the directional cultivation preliminarily showed that:Pinus massoniana is not obviously different in DBH,tree height,crown width and other indicators of growth under the similar site conditions and same management measurements;the DBH,tree height,crown index of Pinus massoniana have remarkable difference in the different management measurements,it is necessary to take appropriate management measures as early as possible in the process of the directional breeding large diameter timber of Pinus massoniana.