CAJ | 학술논문

对楸树30个无性系苗期苗高和地径的年生长动态进行了调查,并用Logistic方程对苗高和地径的生长动态进行拟合,分析了年生长动态规律及生长参数.研究结果表明:楸树无性系苗期年生长高度符合"S"型生长曲线.分别以苗高和地径划分苗木的年生长阶段,其苗高和地径的速生期持续时间分别为93～136d和57～120d,苗高、地径拟合值与苗高、地径实测值呈极显著的相关关系,相关系数分别为0.7463和0.8168.无性系的苗高与速生期始期、速生期结束期与速生点、地径与速生期始期呈显著的相关关系.
대추수30개무성계묘기묘고화지경적년생장동태진행료조사,병용Logistic방정대묘고화지경적생장동태진행의합,분석료년생장동태규률급생장삼수.연구결과표명:추수무성계묘기년생장고도부합"S"형생장곡선.분별이묘고화지경화분묘목적년생장계단,기묘고화지경적속생기지속시간분별위93～136d화57～120d,묘고、지경의합치여묘고、지경실측치정겁현저적상관관계,상관계수분별위0.7463화0.8168.무성계적묘고여속생기시기、속생기결속기여속생점、지경여속생기시기정현저적상관관계.
Seedling height and stem diameter at ground level of 30 Catalpa bungei clones at seedling stage were measured and simulated with Logistic equation. And the dynamic growth regularity and the growth parameters for C. bungei clones were analysed. Result shows that the annual height growth could be well described by an S shaped curve. Annual growth stage of the seedlings was classified in terms of height and stem diameter at ground level, and the duration of rapid growth stages for seedling height and stem diameter at ground level were 93～136 days and 57～120 days respectively. Extremely significant correlations were found between the simulated values and the actual measured values of seedling height and stem diameter at ground level, and the correlation coefficient was 0.7463 for seedling height and 0.8168 for stem diameter at ground level. Significant correlations were also observed between seedling height of the clones and early stage of rapid growth, final stage of rapid growth, rapid growth point, as well as between stem diameter at ground level and early stage of rapid growth.