To search eucalyptus dunnii provenance and fine genealogy for Hunan and other mid-subtropical zone of China, we made eucalyptus dunnii provenance and genealogy introduction experiment in two places which are Forestry Science Research Institute of Yongzhou and Lashan separately by balanced incomplete block design. The result demonstrates： there are different performance of different provenance and genealogy in the same experimental field; if volume numerical differ too much for the same provenance and genealogy, the interactive difference between provenance and genealogy region would be most pronounced. After survey on the stabili- ty of provenance and genealogy, no.158, no.181, no.128, no. 167 and other fine provenances and genealogies were identified to be with good stability and grow faster; No.177, no.160, no.146, no. 102, no.152, no.192, no.163 and other provenances and genealogies were identified to be good to grow in the place with better site conditions; No. 138, no.176, no.157, no.170, no.151 and other provenances and genealogies were identified to be appropriate for growing in the place with worse site conditions.%为了选择最适合湖南等中亚热带引种栽培的邓恩桉种源及优良家系，我们采用平衡不完全区组试验设计分别在永州市林业科学研究所和蓝山两地进行邓恩桉种源／家系引种试验。结果表明：不同种源／家系在同一试验地的表现不一，同一种源／家系在不同试验地的材积数值相差较大，种源／家系×地区的交互作用差异极显著。通过对种源／家系稳定性的测定，选出生长较快、稳定性较好的158号、181号、128号和167号等优良种源／家系，只适于在立地条件较好地方推广应用的177号、160号、146号、102号、152号、192号和165号等种源／家系，以及可以在一些立地条件相对较差地方种植的158号、176号、157号、170号和151号等种源／家系。
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