1.苗種選擇。苗種選擇是整個養殖成敗的關鍵,苗種必須選擇無病、無畸形的,規格最好在5厘米以上,因為這個規格的斑鱖苗種,一是肉眼就能辨認出是不是畸形的;二是放入網箱裏,餌料魚容易解決,成活率也高,可達90%以上。
2.網箱規格及放養密度。網箱規格應為3米×3米×2.5米,在魚苗10厘米以前用20目篩網、10厘米以後用0.5厘米無節網製成。放養密度,每箱在1000~1500尾最為適宜。
3.換huan箱xiang。因yin為wei網wang箱xiang網wang眼yan太tai密mi,很hen容rong易yi被bei藻zao類lei糊hu住zhu,水shui交jiao換huan不bu好hao,會hui使shi箱xiang內nei水shui質zhi變bian壞huai,影ying響xiang斑ban鱖gui生sheng長chang,所suo以yi要yao經jing常chang換huan箱xiang,一yi個ge月yue最zui少shao要yao換huan二er次ci箱xiang。換huan箱xiang時shi要yao仔zai細xi操cao作zuo,不bu要yao傷shang到dao魚yu苗miao,具ju體ti方fang法fa是shi:jiangyaohuandexinxiangxiantaozaijiuwangxiangwaimianzhahao,zaibajiuwangxiangyimianjiekai,jiangyumiaoqingqingdiganruxinwangxiangnei,jinliangbuyaorangwangpianguadaoyumiao,qianwanbuyaoyongchaolaojiangyumiaocongjiuxianglaodaoxinxiangzhong,yinzheyangcaozuohuishiyumiaoshoushang。
4.分fen箱xiang。所suo謂wei分fen箱xiang,就jiu是shi魚yu苗miao長chang到dao一yi定ding時shi期qi就jiu會hui出chu現xian規gui格ge不bu齊qi的de現xian象xiang,這zhe時shi就jiu要yao及ji時shi把ba不bu同tong規gui格ge的de魚yu分fen開kai,使shi一yi個ge箱xiang裏li的de魚yu的de規gui格ge基ji本ben一yi樣yang,這zhe樣yang有you利li於yu生sheng長chang,不bu會hui造zao成cheng大da小xiao不bu齊qi甚shen至zhi自zi殘can的de現xian象xiang。一yi般ban一yi個ge月yue就jiu應ying分fen箱xiang一yi次ci。
5.餌料馴化。斑鱖是典型的肉食性凶猛魚類,在自然環境中,主要吃食魚、蝦xia類lei等deng活huo餌er料liao。但dan是shi由you於yu很hen難nan保bao證zheng有you足zu夠gou的de活huo餌er來lai喂wei養yang,因yin而er就jiu要yao馴xun化hua斑ban鱖gui能neng攝she食shi死si餌er,常chang態tai下xia斑ban鱖gui是shi在zai非fei常chang饑ji餓e時shi才cai少shao量liang攝she食shi死si餌er,基ji本ben上shang隻zhi是shi維wei持chi基ji礎chu代dai謝xie而er已yi。因yin此ci,馴xun化hua斑ban鱖gui主zhu動dong地di、規律地攝食死餌至關重要。一般在斑鱖生長到體長15厘米以上時開始馴化最為適宜。馴化過程為:首先實行少量定時投喂活餌,使斑鱖由箱底覓食轉變為上浮搶食,一般需要7~10天;當每次投喂時都有成群魚浮到水麵搶食時,就可以進行死餌馴化了,方法很簡單,就是逐漸停喂活餌,投喂新鮮的死餌,經過15~20天的細心馴化,便可以全部投喂新鮮的死雜魚了。
6.yuedong。beifangbanguiwangxiangyangzhiyuedongdehaohuaiyeshiyangzhideguanjian,yibanzaifengbingqianbangeyue,jiangwangxiangrenzhenjianzhayibian,kanyouwuposun,youtiaojiandezuihaohuanshangxinxiang,zheyangkeyibaozhengyuedongqijianwangxiangdeanquan。jianzhawuwuhou,jiangwangxiangpingwendichenrushuixia,chenrudeshendu,yiwangxiangshangmiandiyudangdichangnianfengbinghouduyixia20~40limiweiyi。zaifengbinghouyaojingchangdasaowangxiangshangmianbingmiandejixue,yibaochilianghaodetoumingdu。yinianbingkaihuahou,yaojishijiangwangxiangqichu,qichuhouyaogenghuanwangxiang,jianzhayuyuedongdeqingkuang,daidaoyusheshishiyaojishitouwei。
7.病(bing)害(hai)防(fang)治(zhi)。平(ping)時(shi)要(yao)在(zai)網(wang)箱(xiang)四(si)周(zhou)掛(gua)袋(dai)防(fang)病(bing),袋(dai)中(zhong)藥(yao)物(wu)有(you)漂(piao)白(bai)粉(fen),或(huo)者(zhe)是(shi)硫(liu)酸(suan)銅(tong)和(he)硫(liu)酸(suan)亞(ya)鐵(tie)合(he)劑(ji),兩(liang)種(zhong)藥(yao)物(wu)交(jiao)替(ti)使(shi)用(yong),效(xiao)果(guo)很(hen)好(hao)。斑(ban)鱖(gui)在(zai)養(yang)殖(zhi)初(chu)期(qi)階(jie)段(duan)易(yi)發(fa)生(sheng)纖(xian)毛(mao)蟲(chong)病(bing),病(bing)原(yuan)體(ti)是(shi)車(che)輪(lun)蟲(chong),半(ban)眉(mei)蟲(chong)、斜管蟲等,治療方法:用20毫升/升濃度的甲醛浸30~60分鍾,效果極佳。
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