高效缓释肥料“大力丸”对榴莲叶片的效益
Effects of High-Efficiency Slow-Release Fertilizer “Daliwan” on Durian Leaves

榴莲为东南亚国家重要经济果树，受惠于出口市场热络，近年来各产区对榴莲管理也日渐精细化。在接近赤道的榴莲产地，充足的雨水保障了果实需求，但也因为常年的雨水淋洗加上施肥管理不当，土壤肥力已逐渐退化。本研究评估了“大力丸”复合肥使用在月子肥时期榴莲叶片的表现。结果显示，在叶片长、宽、厚度上都有3%~5%的提升，而在叶绿素含量上更有高达8%的增加，说明“大力丸”复合肥对增加叶片光合效能的能力更好。在用量上，“大力丸”也较常规复合肥能大幅减少，对土壤环境、农民施肥负担都有正面效益。
Durian is an important economic fruit tree in Southeast Asian countries, benefiting from promising scenarios in the export market in recent years, the management of durian plantations has become increasingly sophisticated. In durian-producing areas near the equator, the sufficiency of rainfall ensures the demand for fruit, but the soil fertility has gradually degraded due to improper fertilization management and leaching due to rainfall. This study evaluated the performance of durian leaves using “Daliwan”, a slow-release compound fertilizer during the post-harvest fertilizer stage. The results showed a 3%~5% improvement in leaf length, width, and thickness. There was also an increase in chlorophyll content of up to 8%, indicating that “Daliwan” has a better ability to increase leaf photosynthetic efficiency. The application of “Daliwan” was also found to be greatly reduced compared to conventional fertilizers, which showed positive effects on the soil environment and the fertilizer burden of farmers.