摘要
北美红杉在我国华东、西南几省引种已 2 0余年 ,其适应能力较强 ,在各引种栽培点都能生长 ,但以昆明、贵阳、舟山、都江堰等地生长较好 ,且都已开花结果。根据各引种点不同生态环境与北美红杉生长发育的关系 ,探索了该树种对温度、水分和土壤等环境条件的适应性。北美红杉在我国引种区对年均温 14～ 17℃ ,绝对最高温低于 40℃ ,绝对最低温不低于 - 10℃ ,年降水量 10 0 0～ 130 0mm ,年平均相对湿度 72 %～ 80 %的亚热带温暖和温凉、湿润和半湿润的气候环境比较适应。在红壤、黄壤或棕壤上都能生长 ,且抗病虫害能力较强。生态适应性研究为我国扩大其栽培范围提供了科学依据。
Sequoia sempervirens has been introduced to Eastern and South Western China for over 20 years.It showed strong adaptability in all above places.It growed especially well and fruited in Kunming, Guiyang, Zoushan and Dujiangyang.Based on the relation of different environment conditions of the introduction places with the growth and development of Sequoia sempervirens,the adaptability of the species to environmental conditions,temperature,moisture and soil in these areas was discussed.The average annual temperature of Sequoia sempervirens in introduction areas in China was 14～17℃,the highest absolute temperature was lower than 40℃, and lowest absolute temperature was higher than -8℃ .Annual precipitation was 1 000～1 200mm and annual relatively humidity was 72%～80%.Sequoia sempervirens had good resistance to diseases and insects and they could grow well in yellow or brown soil.The study on ecological adaptability provided scientific basis for extending the cultivation of Sequoia sempervirens in China.
出处
《云南林业科技》
2000年第4期36-40,共5页
Yunnan Forestry Science and Technology
关键词
北美红杉
引种
生态适应性
生长发育
Sequoia sempervirens,introduction,ecological adaptability
