在山東省濱州市濱城區的淡水養殖中,南美白對蝦養殖的發展勢頭更猛,今年可能新增養殖麵積8000畝(mu),總(zong)養(yang)蝦(xia)麵(mian)積(ji)實(shi)現(xian)翻(fan)番(fan)。然(ran)而(er),南(nan)美(mei)白(bai)對(dui)蝦(xia)養(yang)殖(zhi)卻(que)存(cun)在(zai)不(bu)少(shao)潛(qian)在(zai)風(feng)險(xian),該(gai)區(qu)在(zai)探(tan)索(suo)養(yang)蝦(xia)新(xin)路(lu)子(zi)中(zhong),實(shi)行(xing)魚(yu)蝦(xia)混(hun)養(yang),實(shi)現(xian)了(le)魚(yu)蝦(xia)雙(shuang)豐(feng)收(shou)。現(xian)將(jiang)他(ta)們(men)的(de)做(zuo)法(fa)介(jie)紹(shao)如(ru)下(xia):
一、混養方案
在zai單dan一yi南nan美mei白bai對dui蝦xia的de養yang殖zhi中zhong,蝦xia苗miao退tui化hua日ri加jia嚴yan重zhong,抗kang病bing能neng力li降jiang低di,發fa病bing越yue來lai越yue多duo,蝦xia一yi旦dan發fa病bing不bu可ke救jiu治zhi,給gei養yang殖zhi戶hu帶dai來lai了le極ji大da的de危wei害hai,造zao成cheng嚴yan重zhong的de經jing濟ji效xiao益yi虧kui損sun。為wei此ci,該gai區qu養yang殖zhi者zhe在zai剛gang發fa現xian蝦xia病bing的de池chi塘tang中zhong,放fang養yang了le淡dan水shui白bai鯧chang魚yu種zhong,進jin行xing魚yu類lei養yang殖zhi,經jing過guo一yi段duan時shi間jian後hou,蝦xia病bing竟jing然ran奇qi跡ji般ban的de好hao轉zhuan了le,並bing且qie獲huo得de了le南nan美mei白bai對dui蝦xia豐feng產chan,魚yu的de產chan量liang也ye不bu低di。此ci後hou,又you多duo次ci進jin行xing了le魚yu蝦xia混hun養yang,都dou收shou到dao了le理li想xiang的de結jie果guo。魚yu蝦xia混hun養yang,體ti現xian了le比bi單dan一yi的de南nan美mei白bai對dui蝦xia養yang殖zhi具ju有you更geng強qiang的de優you勢shi,不bu僅jin蝦xia產chan量liang沒mei減jian少shao,而er且qie增zeng加jia了le魚yu產chan量liang,收shou到dao了le事shi半ban功gong倍bei的de效xiao益yi。
yuxiahunyangjianshaolebinghaidefasheng,zaiduizhaoyangzhizhong,yuxiahunyangchitangbidanyiyangxiachitangdefabingmingxianjiangdi,yuanyoulianxufabingshiyanzhongdechitang,shixingyuxiahunyanghougenzhilexiabingdefasheng。ru:小營養殖基地3號(hao)蝦(xia)池(chi),近(jin)幾(ji)年(nian)連(lian)續(xu)發(fa)生(sheng)蝦(xia)病(bing),造(zao)成(cheng)虧(kui)損(sun),年(nian)年(nian)沒(mei)有(you)收(shou)入(ru),自(zi)實(shi)行(xing)南(nan)美(mei)白(bai)對(dui)蝦(xia)與(yu)淡(dan)水(shui)白(bai)鯧(chang)混(hun)養(yang)後(hou),沒(mei)再(zai)發(fa)生(sheng)嚴(yan)重(zhong)蝦(xia)病(bing),蝦(xia)產(chan)量(liang)也(ye)連(lian)年(nian)增(zeng)長(chang)。
二、混養池塘蝦病減少的分析
由於魚的活動,增加了水質活力,改善了水環境條件,改變了浮遊植物種群組成,創造了對蝦生長的最適環境條件;魚(yu)對(dui)病(bing)蝦(xia)有(you)攻(gong)擊(ji)力(li),減(jian)少(shao)了(le)病(bing)原(yuan)體(ti)的(de)快(kuai)速(su)繁(fan)殖(zhi)和(he)傳(chuan)播(bo),控(kong)製(zhi)了(le)病(bing)原(yuan)體(ti)數(shu)量(liang)的(de)增(zeng)加(jia),使(shi)健(jian)康(kang)蝦(xia)得(de)到(dao)了(le)後(hou)天(tian)免(mian)疫(yi),增(zeng)加(jia)了(le)健(jian)康(kang)蝦(xia)的(de)抗(kang)病(bing)能(neng)力(li)。
三、混養的主要品種模式
yuxiahunyang,bingbushirenhezhongleideyudounengyunanmeibaiduixiayuhunyang,yudepinzhongshiyoujuxianxingde,yangzhihuyidingyaozhuyi。weiletigaoyangzhizonghexiaoyi,jianshaobinghaidefasheng,zaibinzhoudiquyihuodeyangzhichenggongdeyuxiahunyangzhuyaomoshiyou:(1)南美白對蝦與淡水白鯧混養。一般每畝投放南美白對蝦苗4萬尾~6萬尾,投放淡水白鯧魚種150尾~200尾,投放白鰱魚種100尾。(2)南美白對蝦與漠斑牙鮃混養。一般每畝投放南美白對蝦苗4萬尾~6萬尾,投放漠斑牙鮃魚種100尾~150尾,投放白鰱魚種100尾。
四、不能混養的魚類品種
在南美白對蝦的養殖中,蝦的天敵種類很多,魚類本身就是南美白對蝦的主要敵害之一,在養殖魚類中主要有:烏鱧、鯉魚、鯽魚、草魚、nianyudeng。fanshigongjixingqiangdezhongxiacengyulei,douhuiduinanmeibaiduixiazaochengdadeshanghai,zaiyuxiahunyangzhongyidingyaoyinqigaoduzhongshi,bimianchuxianbugaifashengdeshiqing,zaochengbubiyaodejingjisunshi。
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