一、前言植物干物质的90%以上是由叶子通过光合作用制造的。叶面积与作物的产量、品质有密切的关系。因此,叶面积测量是农业科学工作者、植物生理学工作者共同关心的重要问题。叶面积测量方法很多、常用的方法有:求积仪法、称重法、光电仪法、方格法和公式法等,这些方法多数要摘下叶片、需要贵重的仪器、速度较慢、而用公式法工具最为简单、不摘下叶片、效率高、较精确、叶面积的一般公式是: I. INTRODUCTION More than 90% of plant dry matter is produced by leaves through photosynthesis. Leaf area and crop yield, quality are closely related. Therefore, leaf area measurement is an important issue of common concern to agricultural scientists and plant physiologists. Leaf area measurement methods are many commonly used methods are: Ji instrument, weighing method, photoelectric method, the grid method and the formula method, most of these methods to take off the leaves, the need for expensive equipment, slower, and The most simple method using the formula method, do not take off the leaves, high efficiency, more accurate, the general formula leaf area is: