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本研究旨在探讨福建荔枝最重要品种兰竹的叶片营养元素适宜含量。统计分析表明,不同地点、年份对同一品种叶片元素含量存在明显的差异;荔枝叶片含氮量变异系数最小,并按磷、镁、钙、钾依次增大。本研究初步提出的丰产兰竹荔枝秋梢叶片营养元素适宜含量为:氮1.5—2.2％,磷0.12—0.18％,钾0.7—1.4％,钙0.3—0.8％,及镁0.18一0.88％;其叶片氮、磷、钾、钙、镁的适宜比例是1:0.08:0.57:0.30:0.12。上列指标可供荔枝营养诊断指导施肥之参考。
The purpose of this study was to investigate the appropriate nutrient content in the leaves of blue-green bamboo, the most important species in Fujian litchi. Statistical analysis showed that there were significant differences in the leaf element contents of the same variety among different locations and years. The variation coefficient of nitrogen content in litchi leaves was the smallest, followed by phosphorus, magnesium, calcium and potassium. The optimum content of nutrient elements in the leaves of autumn litchi with high yield in this study was: 1.5-2.2% of nitrogen, 0.12-0.18% of phosphorus, 0.7-1.4% of potassium, 0.3-0.8% of calcium, and 0.18-0.88% of magnesium. A suitable ratio of nitrogen, phosphorus, potassium, calcium and magnesium is 1: 0.08: 0.57: 0.30: 0.12. The above indicators for litchi nutrition diagnosis guidance fertilization reference.