罗非鱼是热带鱼类,在我国大部分地区不能自然越冬,必须采取相应措施进行越冬保种。1.越冬准备(1)池塘选择罗非鱼种越冬用的池塘应选择形状规则,避风向阳,面积3~5亩(1亩=667平方米,下同)为宜,水深2米以上,要求水源充足,水质良好,进排水方便,尤其要注意水温调控,要保持池塘水温在18~32℃之间。(2)清塘消毒鱼种放养前,应选择晴朗天气用生石灰或漂白粉进行一次彻底清塘消毒,以有效杀灭病原微生物和增加池水中的钙 Tilapia is a tropical fish, most of China can not overwinter in nature, we must take appropriate measures to protect the winter. (1) Pond selection Tilapia species used in winter ponds should choose the shape rules, sheltered from the sun, an area of ​​3 to 5 acres (1 mu = 667 square meters, the same below) is appropriate, the water depth of 2 meters above the requirements Adequate water, good water quality, easy access to drainage, with particular attention to water temperature control, to maintain the pond water temperature between 18 ~ 32 ℃. (2) Qing Tong disinfection of fish species before stocking, should choose clear weather with quick lime or bleach to conduct a thorough Qing Tong disinfection in order to effectively kill pathogenic microorganisms and increase the water of calcium