唐健民　邹蓉　柴胜丰　欧绍才　陈秋云　蒋运生

摘要[目的]在桂北地区进行中国马褂木的苗木培育和造林研究，为中国马褂木在该地区的推广种植提供理论依据。[方法]对桂北地区中国马褂木的苗木生长情况及土壤肥力进行分析测定。[结果]在桂北地区培育的中国马褂木苗木生长变化显著，3 a中国马褂木实生苗平均株高可达331.11 cm，平均地径为5.05 cm，平均冠幅为122.22 cm；用1年生苗木造林3 a后，中国马褂木平均株高可达357.20 cm，平均地径为6.53 cm，平均冠幅为170.43 cm。造林地土壤肥力检测状况为：土壤为强酸性，有机质微缺，全磷含量中等，全氮含量丰富，全钾含量较丰富。[结论]中国马褂木在桂北地区生长迅速，适宜在该地区推广种植。

关键词 中国马褂木；苗木；生长；土壤肥力

中图分类号 S718.55+6 文献标识码 A 文章编号 0517-6611（2016）05-169-03

Abstract[Objective]To carry out seedling cultivation of Liriodendron chinense （Hemsl） Sarg. in northern Guangxi Province of China， and to provide theoretical basis for the extension of L. chinense in this region.[Method]Growth situation and soil fertility of L. chinense seedlings in northern Guangxi Province were analyzed and researched.[Result]L. chinense seedlings showed significant changes during the growth period in northern Guangxi Province of China. The average plant height of threeyear L. chinense reached as high as 331.11 cm； the ground diameter was 5.05 cm and crown diameter was 170.43 cm. After three years afforestation by oneyearold seedlings， the average plant height of L. chinense was 357.20 cm； the ground diameter was 6.53 cm and crown diameter was 170.43 cm. Detection results of soil fertility was as follows： soil had strong acidity， organic matter and total phosphorus had middle content； total potassium content was relatively abundant.[Conclusion]L. chinense grows rapidly in northern Guangxi Province of China and is suitable for extension in this area.

Key words Liriodendron chinense； Seedling； Growth； Soil fertility

中国马褂木[Liriodendron chinense（Hemsl）Sarg.]又称鹅掌楸、枫荷树等，属木兰科（Magnoliaceae）鹅掌楸属（Liriodendron）的残遗树种，主要星散分布于我国长江流域以南地区，数量稀少，已被列为我国二级珍稀濒危保护植物[1]。中国马褂木生长快速，花朵美丽，叶形奇特、呈马褂状，树干高大通直，根系发达，其皮可药用，是优良的经济生态型树种，被广泛应用于防护林、生态林、工业原料林等建设中。中国马褂木抗逆性强，适应性广，喜温湿、偏微酸性、通透性好的土壤[2]。我国南岭西南部属亚热带气候区，雨水充沛，气候温和，其自然地理环境适合中国马褂木生长。目前关于中国马褂木的苗木造林研究仅限于豫南大别山地区，其余地区未见研究报道。……