山东省主要阔叶树造林树种选育,已进行了多年,经省林业厅种苗站先后在14个地区5—10年的测定,初步筛选出一批优良无性系和家系。这些系号表现出生长快、适应性强、增益在30％以上,适合省内推广应用。省林业厅邀请省内外有关专家,于1988年4月1日在济南召开了审定会议。通过审定的良种(无性系、家系)如下。 The selection and breeding of the major broad-leaved afforestation species in Shandong Province has been carried out for many years. A preliminary screening of a number of excellent clones and pedigrees has been made after the determination of the seedling station of the Provincial Forestry Department for 5-10 years in 14 regions. These systems show rapid growth, strong adaptability, gain above 30%, suitable for the promotion and application of the province. Provincial Forestry Department invited experts from both inside and outside the province, held a validation meeting in Jinan on April 1, 1988. Approved thoroughbreds (clones, pedigrees) are as follows.