叶片分析已成为用来指导施肥的一种诊断手段。但在澳大利亚,很少有柑桔栽培者愿意出钱搞叶片分析,去获取一份诊断结果的说明。这大概是由于在叶分析的实际应用中存在某些问题。这些问题包括:①由于喷药,在叶片表面产生污染;②在采样正确性方面存在一些困难;③对诊断结果的解释缺乏把握。而如采用果汁分析,一方面样品制备 Leaf analysis has become a diagnostic tool used to guide fertilization. But in Australia, few citrus growers are willing to pay for leaf analysis to get a description of the diagnosis. This is probably due to some problems in the practical application of leaf analysis. These problems include: (1) contamination of the blade surface due to spraying; (2) difficulties in sampling correctness; (3) lack of understanding of diagnostic results. If using fruit juice analysis, on the one hand sample preparation