冬天养鱼技巧鱼越冬的温馨告诫创业养殖之路你选择什么最能赚钱
创业养殖之路,你选择什么最能赚钱?冬天养鱼技巧,鱼越冬的温馨告诫;在寒冷的冬季,多数鱼类会停食,因此这时候更要会养鱼,养好鱼,否则就容易出现掉膘或抵抗力下降问题。针对冬天养鱼,本文介绍了冬天养鱼的技术要点及鱼越冬注意事项!
一、冬天养鱼技巧
选好池塘
在选择池塘时,要避风向阳、水源稳定、水质较好的地方建越winter池,其大小可根据放养品种、放養数量、加温方式及管理水平而定。旧水泥池在使用前用清水洗干净后,每立方米水体用20克漂白粉消毒。
合理放養
为防止魚類於冬季掉膘,在魚種放入池塘前,要做好魚體檢查,杜絕病蟲害。在魚類停食前要嚴格檢查魚類健康狀況,对發生的各種病症或不明顯的輕微病害,都要對症用藥徹底治好,以免魚兒於越winter期間因病害而死亡。
投饵施肥
雖然魚類在低溫環境中不需要大量能量,但仍有一定的活動。在停食前20天甚至一個月內,應投喂一些高質量的精餌料,从而提高fish body 的脂肪積蓄,加強肌肉厚度。
水體管控
主要是加強池水管理,提高water quality。當冰封後,pool bottom 的water temperature 不一定很低沉積在bottom 的残餡粪便和一些死亡浮游動植物依然會發酵分解,這樣既消耗water 中溶氧,又會產生出夏季pool 中常見的氨氮硫化氢等物質。
當low temp 時消除有害物質比summer 高溫時困難很多,一般可采取在stop eating 后數日向pool 塘泼洒一次多功能改良劑。
二、Fish Wintering Noticeable Points
在我國北方地區,大多數fish 需要over winter。而在溫州文成則大多數warm water fish 不需要over winter,可將進行fish collection,即winter pool 的load fish 可達平時兩至三倍,可選擇適當深一些pool 進行collection,不collection 也可以。在長江流域的大部分地區,Winter 是進行捕獲和putting-out fish 的good time,因為Water temp low, suitable for transporting and putting out fish.
熱帶fish 或帶背need over winter,即 Water temp below 12-15℃以上的fish 可以過winter 在greenhouse 或plastic greenhouse 內over winter, heating can be used earth heat or burning coal or diesel oil.
Pool depth of one meter Water temp with air temp difference should be considered according to the season, cold air temperature drop speed and duration and whether it rains or not generally speaking, the Water temp is behind the Air Temp by a certain degree (the specific value depends on many factors). Summer temperature appears in the Air Temp; Winter Air Temp also appears in the Air Temp; Summer pool has a thermal stratification layer where upper and lower temperatures are different (daytime upper high nighttime gradually uniform); In Winter when ice forms at surface water temperature drops but low-level water remains at around 4 degrees Celsius so no further sinking occurs when this happens.
Above are tips for “Winter Fish Raising Techniques & Fish Over-Wintering Notes!” Raising fish is about nurturing from small to large through a process that requires learning, research, exploration, practice and summary – only then will you achieve higher levels of proficiency!