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介绍湿地松、火炬松、加勒比松树种及种源选择的研究，结果认为：在我国热带一北亚热带发展三种主要国外松，应根据各地区的地理位置、气温、雨量乃至海拔高度、立地条件，选择适地、适树、适种源进行引种。同时提出在我国热带及南亚热带沿海发展杂交秘，应采用正种加勒比松为母本和湿地松杂交组合；在中亚热带以澳大利亚昆士兰州的湿地松×洪加松杂交组会为宜。此外，也应针对我国不同气候区及立地选出适合各地发展的优良杂交松，供推广应用．
Introducing the research of Pinus elliottii, Pinus taeda, Pinus caribaea and the provenance selection of the Caribbean pine, the results show that: The three major foreign pine in the development of the tropical north subtropical zone should be based on the geographical location, temperature, rainfall and even altitude, , Select the appropriate tree, suitable for species introduction. At the same time, it is proposed that hybrids should be used for the development of hybrids in tropical and subtropical coastal areas of our country. The hybrids of P. caribaea and P.tabaci should be used. In addition, we should also select suitable hybrid pine suitable for the development in different climates and sites in our country for the promotion and application.