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当前位置: 首页 > 文章 > 不同产地河北杨苗期生长动态分析 陕西林业科技 1989 (4) 24-30
Position: Home > Articles > DYNAMIC ANALYSIS OF ANNUAL GROWTH DURSERY OF POPULUS HOPEIENSIS HE ET CHOW FROM DIFFERENT GROWING PLACES Shaanxi Forest Science and Technology 1989 (4) 24-30

不同产地河北杨苗期生长动态分析

作  者：
邱明光;邵崇斌;翁俊华;李周岐
关键词：
河北杨;产地;Logistic曲线;速生期;增长曲线
摘  要：
用数学模型描述不同产地的河北杨(Populus hopeiensis)苗期生长过程,以 Logi-stic 曲线模拟其年生长特点,估计其日生长量的最大点,以确定速生期。并对不同产地的生长型进行分析。用正交多项式逼近不同产地的增长曲线,对组成二次抛物线的正交多项式的系数β_0、β_1、β_2检验结果表明:苗高增长曲线差异是显著的,地径增长曲线在各个系数上存在着差异,而在整体上却是不显著的。
译  名：
DYNAMIC ANALYSIS OF ANNUAL GROWTH DURSERY OF POPULUS HOPEIENSIS HE ET CHOW FROM DIFFERENT GROWING PLACES
作  者：
Qiu Mingguang Shao Chongbin Weng Junhua Li Zhouqi (Northwestern College of Forestry)
关键词：
Populus hopeiensis He et Chow;;Growthing place;;Logistic curve;;Fast-growing stage;;Growth curve
摘  要：
The growth processes during nursery of Populus hopeiensis He et Chow from different growing places were described by mathematical model. The properties of annual growth from different growing places were stimul- ated by Logistic curve,and the maximum points of growth rate per day and the lengths of fast-growing stage were also estimated.On this basis the gr- owth patterns of different places were analysed.The growth curves of diffe- rent places were approached by cross cut polynomiad and coefficients β_0, β_1,β_2 which made up the growth curves were tested.The results indicated that the differences of the growth curves of height were significant in whole and each coefficients,these of diameter significant in each coefficients.

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