油松和巴山松种源选择研究

Research on Provenance Selection of Pinus tabulaeformis Carr. And Pinus henryi Mast.

摘要:

油松和巴山松是用材树种,林木生长量的大小是选择优良树种1个重要指标。根据2次21a油松和巴山松种源试验和种源选择的结果,第1批陕西宁陕和黄陵及四川广元种源,7a生树高比其它种源平均值提高15.9%。第2批陕西商县和黄龙官庄、河南栾川2#,湖北巴东1#和四川广元种源17a生长量比其它种源平均值材积提高22.8%。

Abstract:

Pinus tabulaeformis Carr.and Pinus henryi Mast.are timber tree species,and size of wood increment is a key indicator to select excellent tree species.According to result from twice provenances trial and selection of Pinus tabulaeformis Carr.and Pinus henryi Mast.for 21 years,the first batch of provenance from Ningxia and Huangning of Shanxi and Guangyuan of Sichuan,the seven-year-old tree's height was enhanced by 15.9% than other provenance average value,the second batch of provenance with increment for 17 years from Shangxian and Huanglong Guangyuan of Shanxi,Luanchuan of Henan,Badong of Hubei and Guangyuan of Sichuan were enhanced by 22.8% than the average value volume of other provenance.