Plant leaves are the main photosynthetic organ. The leaf shape depends on the plant species and correlates strongly with temperature and abiotic environment. The leaf area (LA) is the main parameter associated with the assimilating surface area, photosynthesis, respiration, transpiration, specific leaf area, and productivity (Filbin & Hough 1983; Klok & van der Velde 2017; Liu M.et al. 2017). The LA of a specified plant species indicates the performance of such mechanisms as radiation interception, water, and energy exchange. LA has been proven to be of great significance in plant growth studies and has helped with the understanding of plant-environment interactions (Gong et al. 2013; Costa et al. 2016).