摘要
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。
The Chinese Fir orchard of Changle, Zhejiang Province was built in 1976, now there are elementary seed orchard in the areas of 514 mu and first-generation one of 136 mu. In this paper, the way guiding orchard construction, the main managing technology and the improving effect of the seed orchard are studied systematically. Through analysing materials, we find that in Zhejiang region where there is less of Chinese Fir resource, we may collect plus tree materials from original area to build Chinese Fir seed orchard, the latter generations of the parent tree in orchard gain obviously. The average volume of 7.5 years old progeny plantation increased over 30% compared with local check. The study also revealed that the climatic factor, especially the precepitaticn and the sunshine time in February and March, the source of parents, soil fertility, slope orientation etc are the important factors affecting the output and quality of seed in the orchard.
出处
《林业科学研究》
CSCD
北大核心
1991年第1期50-56,共7页
Forest Research
