摘要
为探索适用于花生叶面积指数快速精准测量方法,基于田间调查实测数据,分别采用网格法、比叶重法、系数法、AutoCAD法以及扫描法等5种方法计算了花生不同生育时期的叶面积指数,并以基于扫描法的估算结果为对照,评价了基于其他4种监测方法估算结果的精度,并优化了系数法和比叶重法调查花生叶面积的关键技术指标。结果表明,比叶重法精度较高、监测速度较快、可操作性强,利用比叶重法监测花生叶面积指数,苗期、花针期、结荚期和饱果期叶片取样数分别为24、30、24和30片,相对误差分别为4.13%、4.07%、0.02%和0.13%,标准均方根误差为7.494%,适宜的干重比系数分别为150.00、143.26、187.58和157.20 cm^(2)/g。比叶重法是适宜于花生叶面积快速精准测量的方法。
To investigate efficient and precise methods for measuringleaf area index in peanut,this study employed five distinct approaches—namely,the grid method,specific leaf weight method,coefficient method,AutoCAD method and scanning method.Utilizing field survey data,the leaf area index of peanut at different reproductive periods was calculated.The accuracy of the estimation results from the four alternative monitoring methods was evaluated against the scanning method,considered as the control.Additionally,the key technical indicators for the coefficient method and specific leaf weight method for investigating peanut leaf area were also optimized.The results show that the specific leaf weight method stands out for its accuracy,expeditious monitoring capabilities,and operational efficiency.The leaf area index of peanut was monitored by specific leaf weight method.The number of leaf samples at seedling stage,flowering pegging stage,pod setting stage and pod filling stage was 24,30,24 and 30,respectively.The relative errors are 4.13%,4.07%,0.02% and 0.13%,respectively.The nRMSE was 7.494%.The suitable dry weight ratio coefficients were 150.00,143.26,187.58 and 157.20 cm^(2)/g,respectively.The specific leaf weight method is suitable for rapid and accurate measurement of peanut leaf area.
作者
董建舒
申孝军
衣若晨
李强
苗昊翠
侯献飞
陈军伟
薛铸
DONG Jian-shu;SHEN Xiao-jun;YI Ruo-chen;LI Qiang;MIAO Hao-cui;HOU Xian-fei;CHEN Jun-wei;XUE Zhu(College of Water Conservancy Engineering,Tianjin Agricultural University,Tianjin 300392,China;Institute of Western Agriculture,the Chinese Academy of Agricultural sciences,Changji 831100,Xinjiang,China;Institute of Economic Crops,Xinjiang Academy of Agricultural Sciences,Urumqi 830091,China)
出处
《节水灌溉》
北大核心
2024年第2期88-94,104,共8页
Water Saving Irrigation
基金
国家自然科学基金项目(52179052)
国家现代农业产业技术体系(CARS-13)
国家重点研发计划(2022YFD1000105)。
关键词
花生
叶面积指数
测定方法
叶面积系数
比叶重法
peanut
leaf area index
determination method
leaf area coefficient
specific leaf weight method
