柑桔叶片是光合作用的主要器官,叶片的大小是反映桔树生长状况的重要指标之一。叶面积指数被用来衡量柑桔群体结构是否合理,是丰产栽培的重要参数与指标。因此,测定叶面积成为形态调查基本工作之一。过去常用的叶面积测定方法有求积仪法、方格法、叶模法、剪纸称重法,以及光电求积仪法等。以上这些方法,有的精确度虽然较高,但是往往损伤叶片,要使叶片离开树体才能 Citrus leaves are the main organs of photosynthesis, leaf size is one of the important indicators of the status of the growth of orange trees. Leaf area index is used to measure the structure of citrus population is reasonable, is an important parameter of high yield cultivation and indicators. Therefore, the determination of leaf area has become one of the basic tasks of morphological investigation. In the past commonly used methods for determination of leaf area are plotimeter, grid method, leaf mold method, paper-cut weighing method, and photoelectric quadrature method. Above these methods, although some of the high accuracy, but often damage the leaves, leaves to leave the tree to