Introduction Effect of Pinus massoniana in Yunnan

Pinus massoniana has been introduced to Yunnan in the site of kunming, Mengzi, Jianshui, Gejiu for 20 years, the results of demonstration forest and extending plantation proved that the introduction of Pinus massoniana to a large area of Yunnan was successful. Wood volume of Pinus massoniana is 1.5 times large of contract forest of Pinus yunnanensis, enhancing 14.8%～64.5% than the forest of Pinus yunnanensis which was selected by the same qualification. In the introduction area, the Pinus massoniana bloomed and fruited in the course of nature, and the characters of seeds, such as the weight of one thousand seeds, plump degree, germination rate , germination energy and so on are good. The specific gravity in air dry, drying shrinkage rate, specific gravity rate, mechanical properties are the same or a little better than those of Pinus yunnanensis.