Ⅰ.供化学分析用的橡胶叶样制备的研究根据土壤和叶片的分析结果进行施肥,已作为胶树施肥最经济和最有效的方法而被广泛应用。通常,从大田采集叶样到实验室内烘干要几天时间。在此期间,叶片的代谢活动如呼吸作用会继续进行,这可能导致叶片中干胶含量乃至养分含量 I. Studies on Preparation of Rubber Leaf Samples for Chemical Analysis Fertilizing based on soil and leaf analysis results has been widely used as the most economical and effective method for gum tree fertilization. Usually, samples are taken from the field to the laboratory for several days to dry. During this period, the leaf metabolic activity such as respiration will continue, which may lead to dry leaves and even the amount of nutrients