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浙江长乐杉木种子园,始建于1976年,目前已建成初级种子园514亩,一代种子园136亩。本文对该种子园的建园技术路线、主要经营技术措施和改良效果作了较系统深入的研究。资料分析表明,杉木资源较少的浙江地区,大量收集杉木中心产区的优树材料建立种子园,其后代增益十分明显,7.5年生子代林平均材积比当地对照增长30％以上。研究还表明,气象因子,特别是2～3月份的降水量和日照时数,以及亲本来源、土壤状况和坡向等是影响种子园种子产量和质量的重要原因。
Zhejiang Changle Chinese fir seed orchards, was founded in 1976, has now completed 514 acres of primary seed orchards, 136 acres of seed orchards. This paper made a systematic and in-depth research on the park construction technology route, the main operation technical measures and the improvement effect of this seed orchard. The data analysis shows that Zhejiang Province, where fewer resources for Chinese fir are available, collected a large quantity of excellent tree materials in the center of the fir plantation to establish the seed orchard. The progeny gain was very obvious. The average annual volume of 7.5-year-old Chinese progeny grew by more than 30% over the local control. The study also shows that meteorological factors, especially the amount of precipitation and sunshine hours from February to March, as well as the origin of parents, soil conditions and aspect are the important factors that affect seed yield and quality of seed orchard.