蔬菜幼苗叶面积快速测定方法筛选与优化

为得到一种快速且准确测定蔬菜幼苗叶面积的方法,以番茄幼苗为试材,以方格法为对照,研究扫描分析法、叶面积仪法、打孔称重法测定叶面积的准确性、精确性与测定速度,然后采用黄瓜、辣椒叶片及纸片的面积对测定结果进行验证,最后基于不同扫描分辨率对筛选出的方法进行优化。结果表明,相比叶面积仪法和打孔称重法,扫描分析法测定结果更接近真实值,且精度更高,用时更短。扫描分析法不同分辨率下测定结果无显著差异,且扫描分辨率越低所需测定时间越短。扫描分辨率50 dpi下的扫描分析法可作为一种快速准确测定蔬菜幼苗叶面积的方法。

Screening and Optimization of Rapid Measurement Method for Leaf Area of Vegetable Seedlings

In order to obtain a rapid and accurate leaf area measurement method for vegetable seedlings， this study took tomato seedlings as material and square method as the contrast，studied the accuracy，precision and determining speed of 3 leaf area measurement methods，including scanning and analysis，leaf area meter and leaf punch weighing. Afterwards，the obtained results were verified by cucumber leaves，pepper leaves and scraps of paper. Finally based on varying scanning dpi levels，the screened methods were optimized. The results showed that comparing with the leaf area meter method and leaf punch weighing method，data obtained from scanning and analyzing method was closer to the real value with higher precision and less time consuming. Meanwhile，there was no significant difference among results of scanning and analyzing method under different resolutions，while less time needed for lower resolution. Therefore，the scanning and analyzing method of 50 dpi resolution can be used as a rapid and accurate leaf area measurement method for vegetable seedlings.