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在澳大利亚亚热带地区(南纬27°)调查了三个荔枝园的荔枝叶片营养成分。自开花至采果,叶片中大部分养分含量随叶龄的变化而受到强烈的季节性影响。在开花至刚座果期间、大多数养分比较稳定。这时叶片和果实中多数养分水平相同,唯有K和B例外,果实K水平约高出叶的2倍,叶中B的水平高出果的5倍。各种养分含量的相对顺序是:K>N>P>Mg>Ca>Na>Fe>Zn>Cu>Mn>B。作为分析诊断用的荔枝叶片最好是在座果后2至6周从挂果枝上采集。
Nutritional profiles of litchi leaves in three lychee fields were investigated in the subtropical region of Australia (latitude 27 °). Since flowering to plucking fruit, most of the nutrient content in the leaves is strongly seasonally affected by changes in leaf age. Most of the nutrients are stable during the flowering season. At this time, most of the nutrients in the leaves and fruits are the same, with the exception of K and B, where the fruit K level is about 2 times higher than that of the leaf and the level of B in the leaves is 5 times higher than that of the fruit. The relative order of various nutrient contents is: K> N> P> Mg> Ca> Na> Fe> Zn> Cu> Mn> B. Lychee leaf for analysis and diagnosis is preferably collected from the fruiting branches 2 to 6 weeks after the fruiting.