9个丁香品种叶面积测量相关性分析及回归方程的建立

Correlation Analysis of Leaf Area Measurement of Nine Clove Varieties and Establishment of Regression Equation

[目的]建立方便、准确的叶面积测定方法。[方法]以植物园9个丁香品种的成熟叶片为试材,采用扫描叶片并结合Image-J程序的数字图像处理技术测定丁香叶长、叶宽及叶面积,并运用Spss-26统计软件对其叶长、叶宽、叶长与叶宽的乘积与叶面积进行相关性分析,建立9个丁香品种叶面积的一元回归方程、多元回归方程、幂函数、总三元线性回归方程及总幂函数方程。[结果]叶面积与叶长与叶宽的乘积具有极显著相关性,通过建立的各丁香品种叶面积估算方程,发现三元线性回归方程和幂函数方程是估算不同丁香品种叶面积的较佳回归方程,通过建立的总三元回归方程和总幂函数方程进行拟合优度,差异百分率和估算值与实测值的相关系数比较,得出总幂函数方程对估算9个不同品种丁香叶面积的准确性高,其方程为Y=0.746X+0.975。[结论]该研究成功建立了9种不同品种丁香的叶面积回归方程,但针对其他品种丁香叶面积还需要验证。

[Objective]To establish a convenient and accurate method for leaf area measurement.[Method]Using the mature leaves of 9 clove varieties in the botanical garden as materials,the length,width and area of clove leaves were measured by scanning leaves and digital image processing technology combined with Image-j program.The correlation between the product and area of length,width,length and width were analyzed by Spss-26 statistical software,and the univariate regression equation of leaf area of 9 clove varieties was established multiple regression equation and power function,total ternary linear regression equation and total power function equation.[Result]There was a very significant correlation between leaf area and the product of leaf length and leaf width.Through the established estimation equations of leaf area of various varieties of clove,it was found that the ternary linear regression equation and power function equation were the better regression equations for estimating the leaf area of different varieties.Through the goodness of fit of the established total ternary regression equation and total power function equation,the percentage of difference and the correlation coefficient between the estimated value and the measured value,it was concluded that the total power function equation had high accuracy in estimating the leaf area of 9 different varieties of clove,the equation was Y=0.746X+0.975.[Conclusion]This study successfully establishes the regression equation of leaf area of nine different varieties of clove,but the leaf area of other varieties needs to be verified.