作　　者： ; ; (彭华贵）; (赵学军）;

机构地区： 华南农业大学林学院

出　　处： 《华南农业大学学报》 2004年第4期74-77,共4页

摘　　要： 对北江流域9个于2002年播种、5个于2003年播种的乡土阔叶树种的出苗率、苗期高生长及地径生长做了测定和分析.结果表明:除珊瑚树Viburnumodoratissimum及大果马蹄荷Exbucklandiatonkinensis的出苗率较低之外,其他12种的出苗率均≥60%.出苗率≥90%的包括闽楠Phoebebournei、香港四照花Dendrobenthamiahongkongensis、南酸枣Choerospondiasaxillaris及岭南山茉莉Melliodendronbiaristatumvar.parviflorum.5个2003年播种的树种均有旺盛的高生长,尤其是山乌桕Sapiumdiscolor、苦楝Meliaazedarach和南酸枣,其高生长即使与2002年播种的树种相比都处于优势或同等优势地位.2002年播种的树种普遍比2003年播种的地径大.2002年和2003年播种的树种中,地径生长迅速的分别是深山含笑Micheliamaudiae、香樟Cinnamomumcamphora及山乌桕、苦楝、南酸枣.除了珊瑚树、苦楝及南酸枣等3个树种之外,14个树种中的其余树种的苗期高生长与地径生长均表现出极显著的正相关(P<0 001). Seedling rate, height and diameter growths of 14 broadleaved tree species indigenous to the Beijiang River valley, nine of which were sown in 2002 and five sown in 2003, were measured,recorded and analyzed. Except for Viburnum odoratissimum and Exbucklandia tonkinensis, seedling rates of the other 12 species were ≥60%. Phoebe bournei, Dendrobenthamia hongkongensis, Choerospondias axillaris, Melliodendron biaristatum var. parviflorum had a seedling rate of ≥90%. All of the five tree species sown in 2003 had robust height growths, especially Sapium discolor, Melia azedarach and Choerospondias axillaris, which had preponderant growth even compared with those sown in 2002. Tree species sown in 2002 generally had more diameter growths than those sown in 2003. The fastest diameter growth among the tree species sown in 2002 and 2003 were found in Michelia maudiae and Cinnamomum camphora and Sapium discolor, Melia azedarach and Choerospondias axillaris, respectively. Apart from Viburnum odoratissimum, Melia azedarach and Choerospondias axillaris, height growths had a significant correlation with diameter growths (P<0.001) for the rest of the 14 tree species.

关 键 词： 北江流域 乡土阔叶树种 苗期 生长评价 出苗率

领　　域： [农业科学] [农业科学]