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为了选择适应我国中北亚热带高山区的适生树种,找到现实可用的生产力高的日本落叶松采种区。1983年3月,采用日本、华北、长白、西伯利亚、欧洲、波氏和西藏7种落叶松的33个种源,开展了落叶松种和种源试验对比试验。研究结果表明,除日本落叶松以外的其它6种落叶松均不适宜本地区条件而不适宜生产规模造林;日本落叶松次生种源间生长量也存在一定差异,吉林次生种源普遍优于辽宁种源;按生长量排序为:吉林柳河、吉林东丰、吉林安图、辽宁庄河、辽宁本溪、辽宁铁岭、辽宁桓仁、辽宁西丰、辽宁清源。
In order to choose the suitable tree species suitable for the subtropical high mountains in North China, we found the realistic and available high-yielding Japanese larch seed selection area. In March 1983, 33 provenances of larch in Japan, North China, Changbai, Siberia, Europe, Bose and Tibet were used to carry out comparative experiments on larch species and provenances. The results showed that all six species of larch except Japanese larch were not suitable for the local conditions and unsuitable for afforestation. The growth of secondary larch in Japan was also different, and the secondary germplasm in Jilin was generally superior In Liaoning provenance, according to the growth order: Jilin Liuhe, Jilin Dongfeng, Jilin Antu, Liaoning Zhuanghe, Benxi Liaoning, Liaoning Tieling, Liaoning Huanren, Liaoning Xifeng, Liaoning Qingyuan.