湿加松引种适应性试验及幼林抚育技术探讨

The Experiments of Introduction Adaptability and Discussion on Young Forest Tending Techniques of Pinus elliottii×P.caribaea

为了探究湿加松在普洱市的引种适应性,以本土树种思茅松作为对照,于2014年开展湿加松引种试验,并对湿加松幼林抚育技术进行探讨。结果表明:湿加松在普洱市造林成活率达95%以上,3a保存率及5a保存率均达90%以上,适应性极强;湿加松树高年平均生长量为1.31m,超过思茅松16.96%,地径年平均生长量为2.32cm,胸径年平均生长量为2.51cm,分别超思茅松5.94%、14.61%,说明湿加松在普洱市生长表现优秀,可作为良好的速生丰产树种在普洱市进行大面积推广种植;同时,通过科学、合理的幼林抚育管理技术措施,可以极大地提高湿加松年生长量,达到速生丰产的目的。

In order to explore the introduction adaptability of Pinus elliottii×P.caribaea in Pu'er City,the introduction experiments were conducted in 2014,using Pinus kesiya var.langbianensis as a control,and the young forest techniques were explored.The results showed that the adaptability of Pinus elliottii×P.caribaea in Pu'er City was very strong,the survival rate of afforestation was over 95%,and the 3-year and 5-year preservation rates were both over 90%.The annual average height increment was 1.31m,which was 16.96%higher than Pinus kesiya var.Langbianensis.The average annual ground diameter increment was 2.32cm,and the average annual breast diameter increment was 2.51cm,which was 5.94%and 14.61%higher than Pinus kesiya var.langbianensis,respectively.The results indicated that the growth performance of Pinus elliottii×P.caribaea was very excellent and it can be widely planted as a good fast-growing and high-yield tree species in Pu'er City.At the same time,through scientific and reasonable tending techniques of young forest,the annual increment of Pinus elliottii×P.caribaea can be greatly improved,achieving the goal of fast growth and high yield.