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泰安市林科所承担的“柳树新品种引种试验”,通过半个轮伐期的多点对比,筛选出丁—172、丁—194和丁—333柳树优良无性系。三无性系比省内当前推广的钻天柳材积生长速度提高53—104％,树干通直圆满,抗性强。1987年9月5日泰安市科委邀请同行专家鉴定了该成果,评价为省内先进水平。并建议继续作开发研究。
Tai’an City, Linco bear the “introduction of new varieties of willow test,” through more than half rotation point comparison, selected Ding -172, Ding -194 and Ding -333 willow elite clones. Three clones than the current promotion of the province’s drilling Timber Liu volume growth rate increased 53-104%, straight through the trunk, strong resistance. On September 5, 1987, Tai’an Municipal Science and Technology Commission invited peer experts to appraise the achievements and evaluated them as the advanced level in the province. And recommended to continue research and development.