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池塘养鱼要取得良好的经济效益,须改传统的养殖方式,应用科学的饲养管理和饲料配比技术。一、饲养管理(一)鱼放养前期工作 1.鱼种放养前,池塘要彻底清整。在冬季前,将池塘水排干,让阳光曝晒,冰冻。如果底层淤泥过多,可将池底淤泥挖出池外,淤泥厚度应小于10厘米。如此,既消除病原体,改善了底质与水质,又增加了容水量和放养量。2.池塘的消毒。除盐碱性土质外,每米~2采用生石灰100～150千克或用漂白粉4～5千克拌浆全池泼洒,对鱼病有预防作用。3.鱼放养种类。根据市场需求,自身池塘条件、鱼种情况、饲料来源及管理水平综合而定品种。一般以草鱼为主,兼投鲤鱼、链鱼、鲫鱼等。通过鱼类共生互补作用,合理混养,有利于改善池塘生态环境,提高养殖效益。(二)鱼苗的选择与放养池塘消毒后,10～15天选择体格健壮、规格整齐、体表光滑、溯水力强、活动能力旺盛的鱼苗,用0.1%高锰酸钾溶液浸泡2小
Pond fish culture to achieve good economic returns, must be changed traditional breeding methods, the application of scientific feeding and management and feed ratio technology. First, feeding and management (A) fish stocking work 1. Fish stocking, the pond should be thoroughly cleaned. Before winter, drained the pond water to let the sun insolate and freeze. If the bottom of the mud is too much, the bottom of the mud can be dug pool, the sludge thickness should be less than 10 cm. So, not only eliminate pathogens, improve the quality and water quality, but also increased the capacity of water and stocking. 2 pond disinfection. In addition to alkaline soil, each meter ~ 2 lime 100 to 150 kg or 4 to 5 kg of bleach Quanchiposa, fish disease prevention. 3. Fish stocking species. According to market demand, its own pond conditions, species, feed sources and management of the integrated species. Grass-based fish in general, and voted carp, chain fish, crucian carp and so on. By symbiotic complementarity of fish, reasonable polyculture, is conducive to improving the pond ecological environment, improve farming efficiency. (B) the selection and stocking fry After pond disinfection, 10 to 15 days to choose robust, neat specifications, smooth surface, strong water back, strong activity ability of the fry, with 0.1% potassium permanganate solution soak 2 small