叶面积的测定对评价作物性能具有重要作用。尽管叶片的许多其它特性如干重、厚度、叶绿素含量等已被用作度量绿色植物光合能力的指标,但叶面积依然是应用最广泛的特性。测定作物叶面积的方法较多,既可实际测定所有叶片的面积,也可从所有叶片中取少量样本间接测定。Marshall(1968)曾对各种 The determination of leaf area plays an important role in evaluating crop performance. Although many other leaf properties such as dry weight, thickness, chlorophyll content, etc. have been used as indicators of photosynthetic capacity in green plants, leaf area remains the most widely used feature. There are many ways to determine crop leaf area, which can not only determine the area of ​​all leaves, but also indirectly measure a few samples from all the leaves. Marshall (1968) had a variety of