suizhezhenzhuyangzhiyedexunsufazhan,shengchanguimobuduankuoda,jiyuehuachengduyuelaiyuegao,banzhierlaidebengbingyeriquyanzhong,weihaijida。bengbingchangjuegeiyuzhuyezaochengyanzhongdezainan,shizhunongzaoshoucanzhongdejingjisunshi,cuoshanglequnzhongdeyuzhujijixing。
育珠蚌的發病原因比較複雜,如蚌種近親繁殖,養殖性能下降;水麵重複養殖多年,育珠所需微量元素減少,抗病育珠能力減弱;水環境惡化,水源汙染,各種病原體的侵襲;手術操作中消毒不嚴、蚌體瘦弱、kangbinglichadeng,zhexiedoushidaozhibengbingpinfanfashengdezhijieyuanyin。zhubengdiaoyangzaishuizhong,jitibaobeizaishuangkezhong,yinerbengbingbuyifaxian,yidanhuanbing,hennankongzhihezhiliao。yinci,bengbingyinggaiyifangweizhu,zhiliaoweifu,genjubizheduoniandeshengchanjingyan,youruxiatihui:
(一)自繁自育,嚴禁外購小蚌 手(shou)術(shu)蚌(beng),可(ke)以(yi)自(zi)己(ji)繁(fan)育(yu)培(pei)養(yang),盡(jin)可(ke)能(neng)不(bu)購(gou)或(huo)少(shao)購(gou)外(wai)地(di)幼(you)蚌(beng),切(qie)斷(duan)病(bing)源(yuan)菌(jun)的(de)傳(chuan)播(bo)途(tu)徑(jing)。自(zi)繁(fan)自(zi)育(yu)可(ke)有(you)目(mu)的(de)地(di)進(jin)行(xing)蚌(beng)種(zhong)的(de)選(xuan)育(yu),可(ke)有(you)效(xiao)避(bi)免(mian)近(jin)親(qin)繁(fan)殖(zhi),增(zeng)強(qiang)後(hou)代(dai)生(sheng)命(ming)力(li)。
(二)把好消毒關 手術插片前,應將所有工具洗刷幹淨,嚴格消毒。手術蚌放在網箱中暫養2-3天,以去除蚌殼內的淤泥雜物。手術技術要熟練,一般一隻蚌的手術時間不應超過5分鍾,傷口和小片要滴注消毒液或保養液,特別是5-10月高溫季節,更應做好消毒防病工作。
(三)養殖水域要輪作 changqiyangbengdeshuiyu,shuidihuijijuyouhaiwuzhi,shuizhiyilaohua,zhubengsuoxudeweiliangyuansuxiangduibijiaopinfa,buliyuzhubengdeshengchang。yibanyangbengshijianyuechang,xiangduifabinglvyuegao,zhenzhuzhiliangyuecha。
(四)及時隔離病蚌,剔除死蚌 病bing蚌beng對dui外wai界jie反fan映ying遲chi鈍dun,出chu水shui孔kong噴pen冰bing緩huan慢man無wu力li,用yong開kai殼ke器qi打da開kai雙shuang殼ke,閃shan亮liang肌ji無wu力li,肌ji體ti消xiao瘦shou,食shi道dao內nei無wu食shi。死si亡wang後hou雙shuang殼ke張zhang開kai。一yi旦dan發fa現xian病bing蚌beng死si蚌beng,應ying即ji時shi取qu出chu,防fang止zhi病bing菌jun在zai水shui中zhong擴kuo散san。並bing用yong抗kang菌jun類lei藥yao物wu治zhi療liao,將jiang發fa病bing率lv控kong製zhi在zai最zui低di點dian。
(五)改善生態環境 淤(yu)泥(ni)是(shi)水(shui)體(ti)的(de)主(zhu)要(yao)耗(hao)氧(yang)源(yuan),又(you)是(shi)病(bing)原(yuan)體(ti)的(de)繁(fan)殖(zhi)地(di),且(qie)在(zai)缺(que)氧(yang)條(tiao)件(jian)下(xia),會(hui)產(chan)生(sheng)大(da)量(liang)有(you)害(hai)物(wu)質(zhi),直(zhi)接(jie)或(huo)間(jian)接(jie)導(dao)致(zhi)珠(zhu)蚌(beng)發(fa)病(bing)。因(yin)此(ci),做(zuo)好(hao)底(di)質(zhi)的(de)清(qing)淤(yu)消(xiao)毒(du)工(gong)作(zuo)十(shi)分(fen)重(zhong)要(yao)。定(ding)期(qi)換(huan)水(shui)和(he)消(xiao)毒(du),可(ke)以(yi)有(you)效(xiao)殺(sha)滅(mie)水(shui)體(ti)中(zhong)的(de)致(zhi)病(bing)菌(jun),增(zeng)強(qiang)珠(zhu)蚌(beng)活(huo)力(li)和(he)對(dui)病(bing)害(hai)的(de)抵(di)抗(kang)力(li),降(jiang)低(di)發(fa)病(bing)率(lv)。
(六)改進施肥技術 由於施肥的種類、數量、時間不同,如處理不當,易導致水質惡化,引發蚌病。因此,施肥時,在做到適時、少施、勤施的同時,應根據水溫和水質的變化規律,在有機肥做基肥的基礎上,春、秋兩季實行有機肥和無機肥結合輪施,夏季則全部施用無機肥,以保持池水的"肥、活、嫩、爽",適應珠蚌的生長要求,預防蚌病的發生。
(七)改革傳統養蚌方式 在zai我wo國guo河he蚌beng育yu珠zhu曆li史shi上shang,一yi直zhi沿yan用yong施shi肥fei的de方fang法fa育yu珠zhu。現xian今jin市shi場chang對dui珍zhen珠zhu質zhi量liang要yao求qiu越yue來lai越yue高gao,單dan純chun這zhe一yi方fang法fa已yi不bu能neng滿man足zu需xu要yao。生sheng產chan實shi踐jian證zheng明ming,高gao品pin位wei珍zhen珠zhu的de產chan出chu,是shi人ren工gong投tou喂wei和he養yang殖zhi水shui體ti生sheng態tai環huan境jing科ke學xue調tiao控kong相xiang結jie合he的de結jie果guo。
(八)合理密養和混養 河he蚌beng靠kao過guo濾lv水shui體ti來lai獲huo取qu食shi物wu,放fang養yang過guo密mi,會hui導dao致zhi水shui體ti中zhong餌er料liao生sheng物wu量liang不bu足zu。育yu珠zhu蚌beng食shi物wu供gong不bu應ying求qiu,不bu僅jin會hui影ying響xiang蚌beng體ti的de健jian康kang,還hai直zhi接jie影ying響xiang珍zhen珠zhu的de質zhi量liang。一yi般ban內nei塘tang水shui麵mian畝mu放fang800-1000zhishoushubeng,waidangshuimiankeyigenjushuizhifeishouzhenqingjianshao。butongpinzhongjinxinghunyang,bujinketigaoshuitideliyonglv,erqieyouliyushuizhidetiaokong,duiyufangbengbingyeyoujijiyiyi。
手機版




