湖北林业科技

Nankang Poplar and evergreen poplar are new fast-growing tree species of new varieties selectively breeded out in recent years. In 2001, we firstly introduced these varieties and carried on cutting and afforestation tests at Panxi District. The result showed that these two species have strong adaptability and vigorous growth in 1 500-2 100 m above sea level of valley plot of the Anning river basin in Panxi district, but root-producing capacity from Nankang poplar's cutting is higher than this from evergreen poplar and Yunan poplar's, growth increment of root diameter for two-years old Nankang poplar's young tree is 22.1% higher than this for evergreen poplar, growth increment of height for Nankang poplar is 30.3% larger than for evergreen poplar, root biomass of two years-old young tree from Nankang poplar is 50.3% higher than those from evergreen poplar. Both of such two tree species can adapt to grow well at Anning River watershed so,they could be extended in large scale.