摘要
应用有序样本聚类分析法将鹅掌楸1年生播种苗苗高生长过程分为4个时期:出苗期3月8日～5月2 0日;生长初期5月2 1日～7月2 0日;速生期7月2 1日～9月30日;生长后期10月1日～10月31日。不同密度试验的结果表明:鹅掌楸一年生播种苗适宜密度以80株/m2 效果最好。本文针对鹅掌楸苗木各生长期的特点,提出了相应的育苗技术措施。
Sequence sample cluster analysis is used to divide the height growth process of the annul Liriodendron chinese seedlings.The results indicated that the height growth process of seedlings can be divided into four stages:juvenile stage (March 8～May 20),early growth stage(May 21～July 20),rapid growth stage(July 21～September 30),and late growth stage (October 1～October 31).The results of density test indicated the reasonable density of L.chinese annual seedlings were 80 per quarter meter.According to the growth characteristics of seedlings in different stages,some measures on culture of L.chinese seedlings were suggested.
出处
《贵州林业科技》
2005年第1期20-23,共4页
Guizhou Forestry Science and Technology
基金
贵州省林业厅攻关课题 ( 2 0 0 1-0 9)
关键词
鹅掌楸
生长规律
合理密度
质量指数
Liriodendron chinese
growth regularity
reasonable density
quality index
