金叶含笑北移引种苗期试验研究  

Nursery performane of introduced Michelia foveolata Merr.ex Dandy

作　　者：李晓储[1] 黄利斌[1] 王国良[1] 朱惜晨 何开跃[3] 张永兵[3] 

机构地区：[1]江苏省林业科学研究院,江苏南京211153 [2]无锡市苏南林牧渔良种引繁中心,江苏无锡2140231 [3]南京林业大学森林资源与环境学院,江苏南京210037

出　　处：《江苏林业科技》2005年第5期1-5,共5页Journal of Jiangsu Forestry Science & Technology

基　　金：江苏省农业三项工程项目"耐寒常绿阔叶树种选育"[SX(2003)077];南京市园林局2003年度科研招标项目"黄花黄叶树种的选育与应用";无锡市科技项目"优良绿化树种品种引进及快繁栽培技术研究"(W00077)内容之一

摘　　要：北移引种原产中亚热带地区的木兰科常绿阔叶树金叶含笑结果表明,该树种能适应北亚热带南京、无锡等地气候条件,正常生长.幼苗喜温暖湿润,怕高温日灼,需采用遮荫保湿技术保障越夏.1年生苗木不耐寒,在-5 ℃时会产生较严重冻害,需采取覆盖防寒措施,保障苗木安全越冬.在霉雨季节幼苗易发生根腐型猝倒病,需控制土壤水分并喷杀菌剂防治.其苗木的抗寒性随年龄增大而增强,在-7 ℃极端气候条件下,2年生苗仅产生叶部或顶芽较轻冻害,无顶梢冻枯发生.2年生苗对37～38 ℃持续高温日照和持续60 d秋旱(降雨量仅1.3 mm)极端气候有较强适应性,其抗旱性优于乐昌含笑,低于阔瓣含笑.苗期生长节律呈单峰型,5～9月速生,7月出现峰值.苗木在3年生时速生,树高年净生长量达1.21 m,显示出引种潜力.采用高干阔叶乔木树种与金叶含笑异龄复层混交栽培,能取得促进幼龄苗生长、显著减轻极端低温下冻害的良好效果.The tree species of Micheliafoveoata Merr. ex Dandy was introduced into Nanjing and Wuxi ,northern subtropical areas from mid-subtropical Xinning, Hunan Province. The seedling growth characters and adaptability were studied. The results showed that the seasonal height growth in one-year-old seedling was faster between May and September and peaked in July. The one-year-old seedlings had serious freezing damage, lessened in two-year-old seedlings at - 5℃ -- 7℃ in the field. The drought resistance of Michelia foveolata was higher than that of Michelia chapensis but lower than that of Michelia platyetala under consecutive drought and high temperature （eg. 1.3 mm rainfall for 60 days during autumn, 2004） in twoyear-old seedlings.

关 键 词：金叶含笑 北移引种 苗期试验 

分 类 号：S722.3[农业科学—林木遗传育种]