摘要
[目的]研究不同种源地墨西哥柏1年生幼苗在南京地区自然状态下的越冬成活率及其苗高的生长特征。[方法]对南京六合区种植的10个种源地的墨西哥柏1年生幼苗的越冬存活率和苗高进行了为期1年的观测。[结果]不同种源地墨西哥柏1年生幼苗的越冬存活率差异明显,其中D5种源地的幼苗存活率最高,超过了90%,D8种源地的幼苗存活率最低;10个种源苗木的生长时间和趋势基本一致,1年中的生长期在240 d左右,苗高生长动态总体呈现"慢-快-慢"的生长节律。[结论]10个种源地的墨西哥柏1年生幼苗在南京地区的苗高生长基本遵循Logistic规律,但不同种源地幼苗平均苗高生长量之间仍存在明显差异。
[ Objective ] In order to study overwintering survival rate of Cupressus lusitanica 1 year seedlings under the natural state of overwinte- ring survival rate and the seedling height growth characteristics in Nanjing. [ Method] Overwintering survival rate and height of Cupressus lusitan- ica 1 year seedlings were observed one year in Nanjing Liuhe District. [ Result] Overwintering survival rates of Cupressus lusitan/ca 1 year seed- lings had significant difference. Among them the seedling survival rate of D5 provenance was highest, more than 90%. The seedling survival rate of D8 provenance was lowest. The growth time and trends of the seedling were basically identical to 10 provenances. The growth of the seedling height presented a dynamic ＂slow-fast-slow＂ general rhythm. [ Conclusion ] Through this experiment, we know seedling height growth of 10 prove- nance of Cupressus lusitan/ca 1 year seedlings in Nanjing mainly follow Logistic rules, but high average seedlings growth of different provenance had significant difference.
出处
《安徽农业科学》
CAS
2013年第14期6321-6324,共4页
Journal of Anhui Agricultural Sciences
基金
国家"948"项目(2009-4-17)
关键词
墨西哥柏
生长模型
1年生实生苗
种源差异
Cupressus lusitanica
Growth model
Annual seedling
Provenance difference
