At the end of 20 14, Shandong Forestry Science and Technology Training Center cooperated with Nanjing Forestry University to successfully introduce and breed Lin Nan 34 12 poplar and 3804 poplar at Gaoguanzhai base in Zhangqiu, Jinan. This variety belongs to clonal male plant, Populus deltoides, which has no floc and is environmentally friendly. Introduced by Nanjing Forestry University in the late 1990s from Mississippi, USA, where Populus deltoides originated, it was bred after 20 years of research. It has the advantages of fast growth, high quality, high yield, strong stress resistance, smooth stem shape, wide adaptability, good genetic stability and resistance to black spot. It is an excellent poplar variety for timber afforestation and road greening in Huanghuai, Jianghuai and the middle and lower reaches of the Yangtze River in China.