看了《湖南水产》(现改为《内陆水产》)多期介绍的化肥养鱼文章,深受启发,很有推广价值。特别在当前养鱼精料缺乏,推广化肥养鱼,确是降低成本的好办法。我区许多地方采用2公斤碳酸氢铵拌1公斤过磷酸钙的比例,充分溶解于水,从6～10月,每亩每次泼洒混合化肥5—10公斤,每月泼3—4次,效果很好。一般2公斤混合化淝可增产1公斤鱼,即投入0.92元化肥可增收3元鲜鱼产值(碳酸氢铵0.34/公斤,过磷酸钙0.24元/公斤,鲢鳙鱼3元/公斤)。例如双峰县永丰镇的横塘,55亩水面,往年采用常规办法,每年产鱼只有3000公斤左右,从去年开始,每年投施碳酸氢铵5吨,过磷酸钙2吨,加上投放足够的鲢鳙鱼种(每亩放 Read the “Hunan Fisheries” (now changed to “inland aquaculture”) introduced a number of fertilizer fish articles, inspired by, great promotional value. Especially in the current lack of fish concentrate, the promotion of fertilizer fish farming, it is indeed a good way to reduce costs. In many parts of our region, the proportion of 2 kg of ammonium bicarbonate mixed with 1 kg of superphosphate is fully dissolved in water. From June to October, 5-10 kg of chemical fertilizer is sprinkled per acre, 3-4 times a month. good results. Generally 2 kg of mixed 淝 can increase 1 kg of fish, that is, input 0.92 yuan fertilizer can increase the output of 3 yuan fish (ammonium bicarbonate 0.34 / kg, superphosphate 0.24 yuan / kg, silver carp 3 yuan / kg). For example, Yongfeng Town, Shuangfeng County, Hengtang, 55 acres of water, in previous years using conventional methods, only 3,000 kg of fish produced each year from last year, the annual cast 5 tons of ammonium bicarbonate, superphosphate 2 tons, plus the release Sufficient silver carp and bighead carp (put per mu