溪蜜柚是大埔县最大宗的特产水果 ,现已发展到 2 82 0ｈｍ2 。溪蜜柚需要微量元素较多 ,南方果园本以酸性土壤为主 ,但大埔的柚园继发生了缺镁症之后 ,近年来又发生了缺锰症。据在湖寮调查 ,严重缺锰症的柚园株发病率 18 7%～ 35 7%。溪蜜柚缺锰症的症状主要表现在新梢叶 Guanxi pomelo is the largest specialty in Dapu County fruit, has now grown to 2 82 0hm2. Guanxi honey pomelo need more trace elements, the southern orchard to acid soil-based, but the pomelo garden in Tai Po following the occurrence of magnesium deficiency disease, manganese deficiency disease occurred in recent years. According to the investigation in Huliao, the incidence of serious deficiency of pomelo plants is 18 7% ~ 35 7%. Ying River honey pomegranate symptoms of manganese deficiency mainly in the shoot tip leaves