２１世纪树木引种及早期选择风险魏鉴章，李国锋，李建祥，饶相如（河南省林业技术推广站，河南省林业勘察设计院）２１世纪是生物科学大发展时期，引种将有广阔的天地。预测引种是否成功等到完成一个生活周期显然是不现实的，于是早期选择技术在近二十年来普遍受到关注。... The Introduction and Early Selection Risks of Trees in the 21st Century Wei Jianzhang, Li Guofeng, Li Jianxiang, Rao Xiangru (Forestry Technical Extension Station of Henan Province, Forestry Investigation and Design Institute of Henan Province) The 21st century is a great development period of biological sciences. It will have a vast world for introduction. It is obviously unrealistic to predict whether the introduction is successful or not until the completion of one life cycle. Therefore, the early selection techniques have generally drawn attention in recent two decades. ...