美国的长叶松(P.Paluctris Mill)又称大王松,松脂产量及其质量、成份情况,虽然国外书刊略有报导,但不十分全面,尤其是引种的美国长叶松,在我国生长成功并且可以采脂的情况未见报导。为了探讨美国的长叶松在我国栽培成功后的出脂情况,特地选择闽侯南屿林场黄庙二工区山背的美国长叶松与尤溪县新桥公社葛竹大队的马尾松对照试验,于1976年6月开始到11月结束,外业观察试验历时半年之久。 P.Paluctris Mill of the United States, also known as the king pine, rosin yield and quality, composition, although slightly foreign journals reported, but not very comprehensive, especially the introduction of American Longleaf growth success in our country And can be fat situation has not been reported. In order to study the fat production of Cydonia macrophylla after cultivation in our country, the control study was conducted on the massonin of Masson pine of the United States and the Gezhu Brigade of Xinqiao commune in Youxi county, , Beginning in June 1976 until the end of November, the field observation test lasted six months.