木麻黄优良无性系在山地引种栽培试验

通过福建中部山地引种木麻黄造林试验,5 a的研究结果表明:木麻黄无性系与实生苗造林保存率都较高,分别达到98.15%和96.8%,差异不显著。试验还表明,采用木麻黄无性系造林,其树高、胸径、材积的生长明显优于木麻黄实生苗的生长速度。前者比后者三项主要指标的生长量增加25.0%、26.5%和94.2%,差异较为显著。采用木麻黄优良无性系造林,其林木干型通直、冠幅大、林相整齐;应用实生苗造林,个体分化较大、生长参差不齐。

Introduction and Cultivation of Superior Casuarina equisetifolia Clones on Mountain

Introduction experiments of Casuarina equisetifolia in the middle part of mountain in Fujian was conducted. Five years results showed that afforestation preserving rate of clonal Casuarina equisetifolia and seedling plant were higher and reached 98. 15% and 96.8% respectively. The difference was not significant. The experiments indicated that tree height,DBH and volume of superior Casuarina equisetifolia clones was faster than that of seedling plant. The growth of the 3 main index of the former increased 20. 5% ,26. 5% and 94. 2% than the latter. The difference was significant. Adopting superior Casuarina equisetifolia clone to plant, the form of the forest tree was straight, the crown breadth was big, forest aspect were kept in good order. Using seedling plant for planting, disintegration of individual was bigger, the growth was untrimmed.