摘要
以杂交新美柳(Salix matsudana×alba)为研究材料,利用Logistic方程对其1年生幼苗的地径、苗高和生物量(鲜重和干重)的年生长节律进行了拟合。结果表明:利用Logistic方程拟合效果显著,相关系数都在0.90以上。并以此将杂交新美柳幼苗生长过程分为生长前期、速生期和生长后期,在速生期内的各生长量占总生长量60%左右。各生长性状的生长节律不尽相同,表现为生物量(鲜重和干重)的快速增长点和快速增长期起始日期较地径和苗高晚且速生期持续时间短,干重比鲜重快速增长晚且时间短。
One-year seedlings of salix matsudana × alba were taken as the experimental material in our study. The Logistic equation was applied to study the growth rhythm on diameter, height and biomass. The results showed that the fitting effects of Logistic equation were significant and the correlation coefficients were above 0. 90. Based on the equation, annual growth process of the Salix matsudarta x alba seedlings could be divided into three phases, e. g. , pre-growth period, fast-growth period and post-growth period. The growth in diameter, height or weight took up nearly 60% of total growth volume in the fast-growth period. The fast growth point and start-up day of fast-growth period of weight and biomass were later and fastgrowth period lasted shorter than those of diameter and height.
出处
《江苏林业科技》
2009年第2期1-4,14,共5页
Journal of Jiangsu Forestry Science & Technology
基金
江苏省科技厅科技攻关项目"新西兰观赏杂交柳组培体系建成及苗木对盐胁迫响应的研究与开发"(BE2006342)
