鱼池的准备:家庭养鱼如系利用房前屋后的坑塘、沟渠,因其中常有渣滓、乱石、淤泥、杂草等,故必须预先进行清整,以免在放鱼后由于池中有机质的分解、酸败,产生大量氨、硫化氢、甲烷、二氧化碳等有毒气体,并消耗水中大量氧气,对鱼生存极为不利,甚至引起窒息死亡。清整后每分水面施生石灰15—20斤,既可消毒杀菌、增加池塘钙质和酸碱度,又可松土,使土壤释放更多的其他营养元素于水中,促进鱼类的饵料——浮游生物的生长。也可以用漂白粉进行带水清塘,一般每立方米水体用含有效氯30％的漂白粉20克兑水立即泼洒。但如漂白粉保存得不 Fish pond preparation: If the family uses fish ponds after the front of the house ponds, ditches, which often have dross, rocks, silt, weeds, etc., it must be cleared in advance, after the fish in order to avoid the fish in the pool Organic matter decomposition, rancidity, resulting in a large amount of ammonia, hydrogen sulfide, methane, carbon dioxide and other toxic gases, and consume large amounts of oxygen in water, extremely detrimental to fish survival, and even cause suffocation. After cleaning, the water is applied to 15-20 kg of lime per minute, which can sterilize and sterilize, increase the calcium and pH of the pond, and loosen the soil so that the soil releases more other nutrients in the water and promote the fish’s food-plankton Biological growth. Bleaching powder can also be used to bring clear ponds, generally per cubic meter of water containing 30% of available chlorine bleach 20 grams of watered immediately spill. But if the bleach is not preserved