An Experiment on Introduction and Cultivation of Exotic Poplar Clones in Fuzhou Area

Seven exotic poplar clones were introduced to Minhou County,Fuzhou City from Australia and Pakistan. Cultivation trial have been conducted on sandy riparian site of Minjian River and along the road sides for six years. On the sandy riparian site of Minjiang River,the height and DBH of the deciduous poplar clones S7C3,S7C20,ST92 and Y706 exceed and are close to that of control clone Populus×euramericana cv."San Martino" I 72/58.The average height is 11.2 m and the average DBH 16.1 cm for the five year old control clone.Three semi-evergreen poplar clones A-65/27,A-65/31 and A-61/186 can not endure frequent and prolonged floods and have a lower growth rate. However,they are suitable for road side planting. The average height is 20.0 m and 15.8 m and the average DBH is 25.5 cm and 29.4 cm correspondingly for six year old semi evergreen poplar clones A-65/27 and A-61/186. Seven introduced polar clones are promising fastgrowing deciduous tree species for Fuzhou area.The performance of the three semi evergreen poplar clones is different from that in Australia,they keep green leaves on trees all the year round in Fuzhou area,like evergreen tree species. On sandy riparian site of Minjiang River,the growth rates of S7C3 and S7C20 obviously exceed that of control clone and other clones.