小麦的叶面积系数是衡量麦田群体结构合理与否的重要标志。如我省高产麦田叶面积系数冬前1左右、起身2左右、拔节4左右、孕穗5—6、灌浆4—4.5合适。过大过小对小麦产量都有影响,所以测定叶面积系数对指导小麦生产具有重要意义:一、叶面积系数的测定方法,叶面积系数是指绿叶总面积与土地面积的比值。其公 Wheat leaf area coefficient is a measure of wheat field structure is an important indicator of whether or not. For example, the leaf area coefficient of high-yield wheat field in our province is about 1 before winter, about 2, about 4 for jointing, 5-6 for booting and 4-4.5 for filling. Too large and too small have an impact on wheat yield, so the determination of leaf area coefficient for the guidance of wheat production is of great significance: First, the determination of leaf area coefficient, leaf area coefficient refers to the total green leaf area ratio to the land area. Its public