应用植物叶矿质营养分析,进行植物营养诊断,指导科学施肥,是当前发达国家在生产上广泛采用,并获得显著经济效益的一项技术。1926年法国人拉戛陆和穆梅(Lagalu and M aume)发现植物体内营养元素含量的变化以叶片内的反映最为敏感,从而首先提出“叶诊断”技术。以后,大量分析数据证实,同一树种、种或品种植物叶内的矿质元素含量在正常条件下是基本稳定的。若将需诊断植株叶片的矿质元素含量与正常生长发育树的叶片内的标准 Application of plant leaf mineral nutrition analysis, diagnosis of plant nutrition, scientific guidance fertilization, is currently widely used in developed countries in production, and access to significant economic benefits of a technology. In 1926, the Frenchman Lalugu and Mamel found that the change of nutrient content in plants is most sensitive to the inside of leaves, so “leaf diagnosis” technology was first proposed. Later, a large number of analytical data confirmed that the same species, species or varieties of plant leaves within the mineral elements under normal conditions is basically stable. If the need to diagnose the leaf mineral content of plants and normal growth and development of the tree within the leaf standard