基于图像测算马铃薯叶面积的校正系数  

Revising the Calculation of Correction Coefficient of Potato Leaf Area Based on Image

作　　者：张弘韬 张继宗[1] 刘玉华[1,2] ZHANG Hongtao;ZHANG Jizong;LIU Yuhua(College of Agriculture,Hebei Agricultural University,Baoding,Hebei 071000,China;Zhangbei Key Field Scientific Observation and Experiment Station of Agricultural Resources and Ecological Environment,Ministry of Agriculture and Rural Affairs,Zhangjiakou,Hebei 076450,China)

机构地区：[1]河北农业大学农学院,河北保定071000 [2]农业农村部张北农业资源与生态环境重点野外科学观测试验站,河北张家口076450

出　　处：《中国马铃薯》2024年第1期53-58,共6页Chinese Potato Journal

基　　金：国家重点研发计划项目(2021YFD1901104-5);河北省现代农业产业技术体系露地蔬菜创新团队专项资金(HBCT2021200209)。

摘　　要：在科研和生产过程中,马铃薯叶面积测定一直存在操作难度大、误差大、工作量大等问题。校正系数法是一种简便且成本较低的叶面积估测方法,获取准确的校正系数至关重要。为探索马铃薯叶面积校正系数的准确性,以‘北方009’‘大西洋’‘冀张薯12号’‘北方002’‘希森6号’为试验材料,采用数码相机拍摄技术结合图像处理技术与马铃薯叶片长宽进行相关计算得出准确校正系数。以图像处理法获得精确的马铃薯叶片面积为参照,采用各叶片长宽乘积估算叶面积校正系数(K值),采用对各叶片校正系数简单算术平均数法估算,叶面积校正系数为0.583;采用加权算术平均数法估算,叶面积校正系数为0.585;以线性回归法求得的马铃薯叶面积校正系数为0.571。试验结果比较表明,以线性回归分析获得马铃薯叶面积校正系数(K值)0.571作为系数法参数,相关系数吻合度较高,其可作为马铃薯叶面积校正系数,应用于马铃薯科学研究与生产实践。In the process of scientific research and production,challenges such as complex operations,large errors,and heavy workloads often arise when potato leaf area needs to be determined.The correction coefficient method is a cost-effective and straightforward approach for estimating leaf area,and obtaining an accurate correction coefficient is crucial.To investigate the accuracy of the correction coefficient for potato leaf area estimation,five main regional varieties('Beifang 009','Atlantic','Jizhangshu 12','Beifang 002',and'Xisen 6')were selected as experimental materials.By utilizing digital camera technology in conjunction with image processing techniques and measuring the length and width of potato leaves,precise correction coefficients were obtained.By using image processing,accurate reference values of potato leaf area were obtained,and the length and width of each leaf were multiplied for estimation of the correction coefficient(K value).The simple arithmetic mean method yielded a correction coefficient of 0.583 for each leaf area estimation.Alternatively,employing the weighted arithmetic mean method resulted in a correction coefficient of 0.585 for leaf area estimation.The comparison of the test results revealed a strong correlation coefficient(0.571)for the potato leaf area correction coefficient(K value),obtained through linear regression analysis as a parameter of the coefficient method,with a high correlation coefficient.This finding establishes its potential as an effective correction coefficient for potato leaf area and highlights its applicability in both scientific research and practical potato production.

关 键 词：马铃薯 叶面积 校正系数 图像处理法 

分 类 号：S532[农业科学—作物学] S126