龙眼为福建主栽的重要经济果类之一，１９９７年全省栽培面积达９．３×１０５ｈｍ２产量仅１１－８万ｔ，投产园平均单产不足３００ｋｇ，其栽培规模与栽培水平极不相称。自８０年代末以来，福建龙眼生产在“大小年”结果问题未得到有效缓解的同时，又持续出现了数年的欠收，? Longan is one of the important economic fruits mainly planted in Fujian. In 1997, the province’s cultivated area reached 9.3 × 105hm2 and the output was only 110,000-800 tons. The average yield of the park was less than 300kg. The scale of cultivation was incompatible with the cultivation level. Since the late 1980s, the production of longan in Fujian Province has not yet been effectively mitigated in the “Year of the Year”, but has continued to fall due for several years.