湿地松原产美国东南部,引进我国已有40多年。实践证明,是我国南方低山地区的优良用材树种。近几年来,为了加强该树种的繁育,各地多采用无性系嫁接,建立种子园。我们在具体工作中,遵照毛主席“要认真总结经验”的教导,于1975年进行湿地松嫩枝嫁接试 Slash pine native to the southeastern United States, the introduction of our country more than 40 years. Practice has proved that it is an excellent timber species in the low mountain areas of southern China. In recent years, in order to strengthen the breeding of the tree species, more clonal grafting around the establishment of seed orchards. In our concrete work, following the guidance of Chairman Mao’s “serious lessons learned”, we conducted a trial of the wetland pine grafting in 1975