采用营养诊断的方法,可以更精确地确定亚热带果树对肥料的需要。把分析叶片中的化学成份与树体的生长和产量的相关指标作为诊断的依据,就可以比较清楚地说明亚热带果树不同发育阶段所需要的营养元素、诊断的对象是柠檬、石榴和核桃无机态营养物质的含有程度。 Nutrient diagnosis methods can be used to more accurately determine the need for fertilizers in subtropical fruit trees. The analysis of chemical composition of leaves and tree growth and yield related indicators as a basis for diagnosis, you can more clearly explain the different sub-tropical fruit tree developmental stages of nutrients required for the diagnosis of lemon, pomegranate and walnut inorganic state The degree of nutrient content.