果树叶片是树体光合生产的基础。生产中,常将叶片的形态结构、面积大小及其变化动态作为制定栽培技术的重要依据,科学研究中,也常把叶片指标作为一项主要参数。在种质遗传因子的控制下,每种果树的叶片形态特征具有相对的同一性和稳定性。同种果树虽因在不同生理年龄时期或在树冠枝条上的不同着生部位、或在不同管理水平下面积大小差异较大,但叶片的基本形态是比较接近的。 Fruit tree leaves are the basis of photosynthetic production. In production, leaf morphological structure, area size and its dynamics are often used as an important basis for the cultivation technology. In the scientific research, the leaf index is often used as a main parameter. Under the control of germplasm genetic factors, the leaf morphological characteristics of each fruit tree have relative identity and stability. Although the same type of fruit trees because of different physiological age or crown branch in different parts of the birth, or in different management levels under the size of the larger differences, but the basic form of the leaves are relatively close.