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湿地松、火炬松原产美国,一九四八年引种我省。我所引种二十七年生的湿地松与火炬松,树高最高15.1米,平均13.0米。胸径最粗31厘米,平均22厘米,比同令马尾松高生长快28～46％胸径大42～53％。由于湿地松、火炬松在针叶树材中,是个比较速生的树种;同时又具有适应性较强,树干通直园满、病虫害较少、含脂量高等特点,普遍受到群众欢迎。因此,近年来在我省丘陵地区发展较快。但由于湿地松、火炬松是引进树种,对它们的木材性质了解甚少,研究湿地松、火炬松的木材性质的意义在于选择造林树种和扩大材种利用范围,满足国民经济迅速发展的需要。
Pinus elliottii and Pinus taeda native to the United States, introduced to our province in 1948. I have introduced twenty-seven-year-old wetland pine and loblolly pine, the highest tree height of 15.1 meters, an average of 13.0 meters. The thoracic diameter is the longest 31 cm, an average of 22 cm, 42 ~ 53% larger than the same growth rate of Masson pine 28 ~ 46%. As the pine, loblolly pine in the softwood, is a relatively quick-growing species; at the same time has a strong adaptability, straight trunk full trunk, pests and diseases less, high fat content, generally welcomed by the masses. Therefore, in recent years in hilly areas in our province developed rapidly. However, because Pinus elliottii and Pinus taeda are introduced species and their wood properties are poorly understood, the significance of studying the wood properties of Pinus elliottii and Pinus taeda is to select afforestation species and expand the range of species utilization to meet the needs of the rapid development of national economy.