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研究了芒果果实及叶片对大气氟的吸收与分布，监测了黑顶病及小果病发病果园雨水中氟的浓度变化。结果表明，氟由果皮气孔进入果实，随果皮蜡质增厚吸收量减少。叶片吸收的氟可部分转运到果实。果皮中氟浓度高于果肉和种子。果实内氟积累到一定程度可抑制细胞膨大生长，表现为“小果病”。溶解于雨水中的氟是黑顶病发生的直接原因，含氟雨水积聚果顶，氟渗入组织，引起坏死变黑。在田间将果实倒挂则症状出现在果肩。叶片比果实，老叶比新叶对氟伤害的抗性较强。整个生长过程叶片都吸收氟，叶尖叶缘含氟最高，伤害症状为叶尖叶缘干枯。
The absorption and distribution of atmospheric fluorine in mango fruits and leaves were studied. The changes of fluoride concentration in orchard rainwater with black top disease and small fruit disease were monitored. The results showed that fluoride penetrated into the fruit stomata and decreased with the thickening of waxy peel. Fluoride absorbed by the leaves can be partially transported to the fruit. Fluoride concentrations in the peel are higher than in flesh and seeds. The accumulation of fluoride in fruit to a certain extent can inhibit the expansion of cells, the performance of “small fruit disease.” Fluoride dissolved in rain water is the most direct cause of black-top disease. Fluorine-rain accumulates on the top of the fruit and fluoride penetrates into the tissues, causing necrosis to turn black. The fruit in the field upside down symptoms appear in the fruit shoulder. Leaves than fruit, old leaves than the new leaf fluoride resistance to fluoride stronger. Fluoride throughout the growth of the leaves are absorbed, leaf tip leaf fluoride highest injury tip injury leaf edge.