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杨树优良无性系推广经验总结支恩波赵宝茗（河北省林科所石家庄０５００６１）魏红侠陈殿合（河北省林业工程项目管理中心）刘新华（邯郸市林业局）自８０年代末以来，河北省积极开展了大规模的速生丰产林营造活动，尤其是９０年代初开展的林业世界银行贷款项目，更是把我...
Poplar Climbing Experience of Clones with Excellent Climbing Enba Bo ZHAO Bao-ming (Forestry Bureau of Hebei Province, Shijiazhuang 050061) Wei Hongxia Chen Dianhe (Hebei Forestry Project Management Center) Liu Xinhua (Handan Forestry Bureau) Since the late 1980s, Launched a large-scale fast-growing and high-yielding forests to create activities, especially in the early 90s to carry out the Forestry World Bank loan project, it is me ...