As co- mpared with controls,tree height is over 13.8%,DBH is over 29.1%,volu- me is over 69.9%,the genetic gains of tree height and DBH are over 9.1% and 17.5%.

• 通过综合评定；从22个家系中选出5个优良家系；与对照相比；树高大13.；8%25；胸径大29