【摘要】 由15年生不同地理种源人工林长白落叶松与四个杂交种日×长、兴×长、兴×日、日×兴的材质测定数据的结果分析表明:(1)与不同地理种源相比,四个杂交种的生长速度、材质指标除小北湖种源外,均优于前者,证实落叶松种间杂交的确具有杂种优势。(2)鉴于落叶松主要用作工程用材和纸浆用材,其材质综合评估表明,日×长是四个杂交树种中最优势的杂交树种。更多还原

【Abstract】 The wood properties of different geographic provenances of 15-year old Larix olgensis and hybrids of L. japonica×L, olgensis, L. gm linii×L. olgensis, L. gmelinii×L. iaponica and L. japonica×L. gmelinii have been determined. The results are as follows: 1. The growth rate and index of wood properties of four hybrids are superior to that of eight provenances of Larix olgensis but for the provenance of Xiaobeihu. It ihdicates that the heterosis exactly exists in the hybrid of larch. 2. The larch are mainly used for engineering timber and pulp wood,according to the comprehensive evaluated analysis, the hybrid of L. japonica×olgensis is the best.更多还原