摘要
通过对香叶树播种育苗,研究其1年生苗苗高地径生长量变化规律。经定期测定,有序样本聚类和回归分析,拟合苗高、地径与时间相关关系的数学模型,结果表明:香叶树1年生播种苗生长期可划分为出苗期、生长初期、生长盛期和生长后期四个时期。苗高生长量集中在生长盛期,占77.51%,出苗期和生长初期所占比重较小,二者之和仅为7.93%,不及生长后期的14.55%。地径生长量在出苗期占比较大,占总量的18.03%,生长后期为11.47%,生长初期最小仅为8.2%。苗高、地径在生长盛期的时间仅占总生长天数的46.67%,但其生长量却分别占总生长量的77.51%和62.30%。苗高、地径生长量与时间存在着极显著的相关关系,拟合的生长曲线可靠性高,可用来估测和分析香叶树1年生播种苗在不同生长时期苗高、地径的生长量变化。
The study was carried out on growth regularity of one-year Lindera about height and ground diameter after sowing and cultivation. After regular determination, the relationship between the time, height and diameter was fitted into the mathematical mode on ordinal samples cluster and regression analysis. The results indicated that the growth period of one-year Lindera sown seedling could be divided into four periods： The seedling stage, the initial stage, growing vigorously stage and the late stage of growth. The height of Lindera, in the seeding and initial stage was occupied small proportion, the sum of both accounted for 7.93% which was 14.55% lower than the late stage of growth. The ground diameter of Lindera was 18.03% in the seedling growth, 11.47% in the late stage of growth and 8.2% in the initial stage. The time of height and diameter accounted 46.67%, but its increment was accounted for 77.51% and 62.30% of the total increment respectively in growing vigorously stage. There was a significant relationship between the time, height and the ground diameter, the growth curve was of high reliability, which could be used to estimate and analyze the variation of height and ground diameter of one-year-old Lindera at different growth stages.
出处
《亚热带植物科学》
2013年第3期219-222,共4页
Subtropical Plant Science
基金
省属公益类科研院所基本科研专项(No.2011R1013-2)
关键词
香叶树
1年生苗
苗高
地径
生长量
生长曲线
Lindera
one-year seedling
height
ground diameter
increment
growth curve
