1) Yuav ua li cas nuv ntses tawb
Kev npaj ntawm lub tawb nuv ntses yuav tsum tau txiav txim siab los xyuas kom meej tias txhua lub tawb tuaj yeem nqa cov dej sib pauv tau zoo, thiab cov ntsiab lus ntawm kev tswj tau yooj yim. Lub tawb nuv ntses yuav tsum tau teem caij kom sparsely li sai tau thiab staggered nyob rau hauv cov duab ntawm cov khoom tiav.
2) Qhov ntom ntawm nuv ntses tawb
Qhov ntom ntawm lub tawb nuv ntses yuav tsum tau txiav txim siab raws li dej zoo thiab kev tswj xyuas. Nuv ntses tawb rau cultivation silver carp thiab bighead carp tuaj yeem suav txog 1% ntawm cov dej loj hauv cov dej rog nrog cov nplua nuj pub, thiab 0.5% ntawm cov dej zoo yog nyias. Kev yug me nyuam ntses yog nyob ntawm cov dej ntws, dej zoo thiab fertility, thiab qib ntawm cov pa oxygen yaj hauv thaj chaw dej nws tus kheej. Yog hais tias cov dej ntws zoo, qhov fertility yog nruab nrab, thiab cov pa oxygen yaj yog siab, ces ntau lub tawb tuaj yeem teeb tsa, thiab rov ua dua.
3) Cov txheej txheem dej tau teeb tsa hauv lub tawb
Qhov tob ntawm lub tawb installation feem ntau tsis ntau tshaj 3 meters. Raws li kev faib tawm ntawm plankton, nws suav txog 58.7% ntawm cov dej txheej hauv 2 meters, thiab 2-4.2 meters rau 41.3%. Tshwj xeeb tshaj yog nyob rau hauv cov dej uas tsis tshua muaj pob tshab, phytoplankton yog qhov ntau tshaj. , Thiab tus naj npawb ntawm zooplankton nyob rau hauv cov dej tob ntawm tsawg dua 1 meter ntawm cov dej txheej yog tsawg tshaj li cov dej txheej ntawm 1-2 meters, tshwj xeeb tshaj yog qhov ceev tshaj plaws ntawm 2-3 meters. Yog li ntawd, nyob rau hauv cov dej nplua nuj nyob rau hauv dej zoo thiab chiv thiab phytoplankton, lub tawb yuav tsum tau teem nyob rau hauv ib tug ntiav dej txheej, tab sis hauv qab ntawm lub tawb yuav tsum ntau tshaj 0.5 meters los ntawm lub hauv qab ntawm cov dej. Hauv cov dej uas muaj cov dej zoo dua qub, lossis cov tawb uas loj loj carp yog tsuas yog tsa, nws tuaj yeem muab tso rau hauv cov dej tob tob raws li qhov tsim nyog, tab sis nws yuav tsum tsis txhob tob dhau.
4) Xaiv qhov chaw nuv ntses
Ntses kab lis kev cai hauv tawb tso siab rau kev sib pauv ntawm cov dej hauv thiab sab nraum lub tawb kom tswj tau ib puag ncig zoo hauv lub tawb. Yog li ntawd, ib puag ncig tej yam kev mob ntawm qhov chaw uas lub tawb raug ntsia yog ib qho tseem ceeb rau kev vam meej los yog tsis ua hauj lwm ntawm cov ntses kab lis kev cai nyob rau hauv lub tawb.
Qhov chaw uas lub tawb tau teeb tsa yuav tsum ua kom tau raws li cov hauv qab no: ① Cov dej saum npoo dav dav, cov dej theem ruaj khov, cua leeward yog hnub ci, dej kub siab, dej tob yog 3-7 meters, ib puag ncig yog nyob ntsiag to, cov dej zoo yog tshiab, tsis muaj kuab paug, thiab pH tus nqi yog nruab nrab thiab alkaline dej. ② Xaiv cov dej artesian lossis dej tidal. Cov dej ntws ceev feem ntau yog 0.05-0.2 m / s kom ntseeg tau tias cov pa oxygen. Cov dej ntws ceev ceev feem ntau ua rau cov ntses hauv lub tank ua luam dej nrog cov tam sim no sab saum toj, uas siv lub zog thiab cuam tshuam rau kev loj hlob; ③ Cov tawb uas feem ntau tsa cov carp thiab carp loj yuav tsum xaiv cov dej fertile thiab nplua nuj plankton (feem ntau cov phytoplankton ib liter dej 2 lab los yog ntau tshaj, muaj ntau tshaj 3,000 zooplankton yog cov dej rog), transparency ntawm 30-50 cm, dej muaj tsawg sediment thiab impurities. Cov dej turbid tsis zoo rau kev loj hlob ntawm plankton.