经１９９４～１９９５年的调查试验，明确了在南宁市为害龙眼的食果蝙蝠主要是棕果蝠（Ｒｏｕｓｅｔｕｓｔｅｓｃｈｅｎａｕｌｔｉ）；该果蝠在龙眼园觅食活动，一般在傍晚光度平均为１．９Ｌｕｘ以下时，相继飞人果园，夜间２０～２２时活动频繁，黎明光度平均在４．２Ｌｕｘ以上便飞离龙眼园。棕果蝠喜欢取食含可溶性固形物在１６％以上的果实；龙眼早熟品种受害最重，在果园采用尼龙丝网实施局部变方向拉网捕杀棕果蝠。果穗、果粒受害率比防治前的受害率分别下降９４．０％、９５．９％、和７５．８％、９３．５％ After 1994 ~ 1995 investigation, it is clear that the fruit bat in Nanning City is dominated by Rousetusteschenaulti. The fruit bat forages in the longan orchards, usually in the evening when the average luminous power is below 1.9Lux , One after another trapeze orchard, frequent activities at 20 to 22 o’clock at night, the average dawn luminosity 4.2Lux above will fly away from Longan Park. Brown-eyed bats like to eat fruit containing more than 16% of soluble solids. The longan varieties suffer the most. In the orchard, nylon mesh is used to pull the net to kill the brown bats. Ear damage and fruit damage rate were 94.0%, 95.9% and 75.8%, 93.5%