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夏季既是鱼类生长的旺季,也是鱼病易发的盛季。鱼病一旦发生,不仅治疗困难,而且往往为时已晚,从而导致成鱼产量下降,甚至可能出现“全军覆灭”的局面。可见,对鱼病必须搞好预防。 一、调节好水质 1.在6月中下旬应将水加至该池最高水位。 2.满水后应每隔7～10天往池内补注新水,每次10厘米。与此同步的是要施追肥,6月每7～10天施一次有机肥,每667平方米水面100～150千克;7～8月份改少量施化肥,每667平方米每次用2千克硫铵(或尿素1千克)加1～1.5(?)
Summer is not only the peak season of fish growth, but also the season of fish disease prone. Once a fish disease occurs, not only the treatment is difficult, but it is often too late, leading to a drop in the production of adult fish and may even result in “annihilation by the whole army.” Visible, the fish disease must do a good job in prevention. First, adjust the water quality 1. In mid-to-late June should be added to the highest water level in the pool. 2. After the full water should be every 7 to 10 days to fill the pool of new water, each 10 cm. In keeping with this is to top-dressing, in June every 7 to 10 days to give an organic fertilizer, per 667 square meters of water 100 to 150 kg; 7 to August to change the amount of fertilizer, every 667 square meters with 2 kg of sulfur Ammonia (or urea 1 kg) plus 1 ~ 1.5 (?)