龙滩水库大型不投饵网箱养殖是当地渔业生产的主要形式,目前,整个库区的不投饵网箱养殖面积为13000亩,年产值1.7亿元。然而在2015年10月至2016年12月期间,库区不投饵网箱养殖曾经遭受严重的淡水壳菜危机:当时库区几乎所有的网箱上附着了大量的淡水壳菜,严重的网箱每平方米网片上淡水壳菜数量高达1000多个,加上淤泥及青苔等其他附着物,每平方米网片的重量达5千克。部分养殖户的网箱因为附着大 Longtan reservoir large-scale non-feeding cage culture is the main form of local fishery production, at present, the entire reservoir area does not feed cage culture area of ​​13000 mu, 170 million yuan in output value. However, during the period from October 2015 to December 2016, there was a serious freshwater shelling crisis in the non-bait cage culture in the reservoir area: at that time, almost all the cages in the reservoir area were heavily laden with freshwater shellfish, Boxes per square meter mesh on the number of freshwater shelled cabbage up to more than 1000, together with silt and moss and other attachments, the weight per square meter of mesh up to 5 kg. Some cage farmers because of attachment