湿地松(Pinus ellottii)原产美国东南部,1948年引种到我国,先后在广东、福建、江西、湖南、安徽、江苏等地试种。鉴于湿地松生长快,干形好,因此,近年来安徽省淮河以南各地广泛引种。然而,安徽湿地松母树林结实量少,出籽率低,产量年际波动特大,目前所用种子大部分依赖进口, Pinus ellottii native to the southeastern United States, introduced to our country in 1948, successively in Guangdong, Fujian, Jiangxi, Hunan, Anhui, Jiangsu and other places planted. In view of the rapid growth of wetlands, dry good, therefore, in recent years, Anhui Huaihe River widely introduced around the country. However, there is less sturdy seedling and low seedling rate in Anhui wetland pine forests, and the annual output fluctuates greatly. At present, most seeds used depend on imports,