湿地松、火炬松原产美国东南部,均属高大乔木,以生长快、材质好和富含油脂著称。本世纪三十年代即开始在我国引种。我省73年引进湿地松,74年引进火炬松,以后75、79和80年相继从加拿大、美国引种这两种树种。经历年育苗造林试验,普遍反映生长良好。湿地松在美国主要分布于南卡罗来纳州、佛罗里达州、乔治亚州、阿拉巴马州、密西西 Pinus elliottii and Pinus taeda native to the southeastern United States are tall trees that are known for their rapid growth, good materials and rich oils. Thirties of this century began to introduce in our country. In the 73 years since the introduction of Pinus elliottii in our province, we introduced Pinus taeda in 74 years and introduced these two species successively from Canada and the United States after 75, 79 and 80 years. After years of nursery afforestation test, generally reflect the good growth. Slash pine is mainly distributed in the United States in South Carolina, Florida, Georgia, Alabama, Mississippi