隨(sui)著(zhe)珍(zhen)珠(zhu)養(yang)殖(zhi)業(ye)的(de)迅(xun)速(su)發(fa)展(zhan),生(sheng)產(chan)規(gui)模(mo)不(bu)斷(duan)擴(kuo)大(da),集(ji)約(yue)化(hua)程(cheng)度(du)越(yue)來(lai)越(yue)高(gao),伴(ban)之(zhi)而(er)來(lai)的(de)蚌(beng)病(bing)也(ye)日(ri)趨(qu)嚴(yan)重(zhong),危(wei)害(hai)極(ji)大(da)。蚌(beng)病(bing)猖(chang)獗(jue)給(gei)育(yu)珠(zhu)業(ye)造(zao)成(cheng)嚴(yan)重(zhong)的(de)災(zai)難(nan),使(shi)珠(zhu)農(nong)遭(zao)受(shou)慘(can)重(zhong)的(de)經(jing)濟(ji)損(sun)失(shi),挫(cuo)傷(shang)了(le)群(qun)眾(zhong)的(de)育(yu)珠(zhu)積(ji)極(ji)性(xing)。
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、抗kang病bing力li差cha等deng,這zhe些xie都dou是shi導dao致zhi蚌beng病bing頻pin繁fan發fa生sheng的de直zhi接jie原yuan因yin。珠zhu蚌beng吊diao養yang在zai水shui中zhong,肌ji體ti包bao被bei在zai雙shuang殼ke中zhong,因yin而er蚌beng病bing不bu易yi發fa現xian,一yi旦dan患huan病bing,很hen難nan控kong製zhi和he治zhi療liao。因yin此ci,蚌beng病bing應ying該gai以yi防fang為wei主zhu,治zhi療liao為wei輔fu,根gen據ju筆bi者zhe多duo年nian的de生sheng產chan經jing驗yan,有you如ru下xia體ti會hui:
(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 長chang期qi養yang蚌beng的de水shui域yu,水shui底di會hui積ji聚ju有you害hai物wu質zhi,水shui質zhi易yi老lao化hua,珠zhu蚌beng所suo需xu的de微wei量liang元yuan素su相xiang對dui比bi較jiao貧pin乏fa,不bu利li於yu珠zhu蚌beng的de生sheng長chang。一yi般ban養yang蚌beng時shi間jian越yue長chang,相xiang對dui發fa病bing率lv越yue高gao,珍zhen珠zhu質zhi量liang越yue差cha。
(四)及時隔離病蚌,剔除死蚌 bingbengduiwaijiefanyingchidun,chushuikongpenbinghuanmanwuli,yongkaikeqidakaishuangke,shanliangjiwuli,jitixiaoshou,shidaoneiwushi。siwanghoushuangkezhangkai。yidanfaxianbingbengsibeng,yingjishiquchu,fangzhibingjunzaishuizhongkuosan。bingyongkangjunleiyaowuzhiliao,jiangfabinglvkongzhizaizuididian。
(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 zaiwoguohebengyuzhulishishang,yizhiyanyongshifeidefangfayuzhu。xianjinshichangduizhenzhuzhiliangyaoqiuyuelaiyuegao,danchunzheyifangfayibunengmanzuxuyao。shengchanshijianzhengming,gaopinweizhenzhudechanchu,shirengongtouweiheyangzhishuitishengtaihuanjingkexuetiaokongxiangjiehedejieguo。
(八)合理密養和混養 hebengkaoguolvshuitilaihuoqushiwu,fangyangguomi,huidaozhishuitizhongerliaoshengwuliangbuzu。yuzhubengshiwugongbuyingqiu,bujinhuiyingxiangbengtidejiankang,haizhijieyingxiangzhenzhudezhiliang。yibanneitangshuimianmufang800-1000zhishoushubeng,waidangshuimiankeyigenjushuizhifeishouzhenqingjianshao。butongpinzhongjinxinghunyang,bujinketigaoshuitideliyonglv,erqieyouliyushuizhidetiaokong,duiyufangbengbingyeyoujijiyiyi。
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