含笑种源引进及测定评价

Determination of several Michelia species introduced from the medi-subtropic region

在北亚热带宁镇丘陵地区和太湖孤山丘陵地区引种原产中亚热带丘陵山区5种含笑种源试验结果表明,幼龄期生长量乐昌含笑>金叶含笑>深山含笑>醉香含笑>阔瓣含笑;长沙种源苗期抗寒性深山含笑>乐昌含笑>醉香含笑;高温日灼抗性乐昌含笑>金叶含笑>阔瓣含笑>醉香含笑>深山含笑;对持续60d秋旱的抗性深山含笑>乐昌含笑>醉香含笑。除醉香含笑历年在-5℃条件下会产生明显冻害外,幼龄期供试其他各种含笑均能适应引种的气候及圃地立地条件,正常生长发育。在供试种源中,浙江杭州种源深山含笑和乐昌含笑生长较好,适应性强,是值得扩繁应用的优良种源。而醉香含笑适应性较差,不宜在宁镇丘陵地区引种。安徽黄山种源深山含笑长势较差,抗寒性、抗旱性较差,亦不宜继续引种。

The determination of serveral Michelia species introduced from the medi-subtropic region revealed that in their young growth,M.chapensis topped M.foveoloata,M.maudiae,M.macchurei and M. platypetala in turn whereas in their winter hardiness,M.maudiae topped M.chapensis,M.macchurei in turn.As far as heat resistance,M.chapensis was culminated over M.foveolata,M.foveolata,M.macchurei and M.maudiae in succession whereas as for fall drought resistance,M.maudiae was culminated over M.chapensis,and next,M.macchurei.In all M.maudiae and M.chapensis from Hangzhou acclimatized well but M.maudiae from Huangshan was unfavorable in its adaptation.