Tsawg-kub tiv thaiv cov kab mob
Kev piav txog
Daim ntawv thov foob
Nws tuaj yeem siv thaum dej kub yog tsawg dua 15 ℃, nws haum rau cov dej khib nyiab xws li dej khib nyiab, dej khib nyiab, khoom noj khoom haus khib nyiab thiab lwm yam.
Muaj nuj nqi tseem ceeb
1. Muaj zog yoog tau rau cov dej dej tsawg.
2. Nyob rau hauv ib puag ncig dej tsawg, nws tuaj yeem ua rau muaj kev cuam tshuam ntau yam ntawm cov pa phem ntawm cov muaj kuab paug organic, daws cov teeb meem organic zoo li cov dej phwj.
3. Txhim kho lub peev xwm ntawm cov organic los txo cov cod thiab ammonia nitrogen.
4. Tsawg tus nqi thiab kev ua haujlwm yooj yim.
Daim ntawv thov txoj kev
Raws li biochemical system dej zoo index, thawj zaug muab cov dej khib yog 100-200 g / cubic (suav los ntawm cov ntim ntawm biochemical pas). Yog tias nws muaj qhov cuam tshuam loj dhau rau ntawm cov txheej txheem biochemical tshwm sim los ntawm kev hloov pauv, cov tshuaj ntau npaum li cas 30-50 g / cubic (suav los ntawm cov ntim ntawm biochemical pas). Qhov ntau npaum li cas ntawm cov kav dej hauv nroog yog 50-80 g / cubic (suav los ntawm cov ntim ntawm biochemical pas).
Kev qhia tshwj xeeb
1. Kub: Nws yog haum ntawm 5-15 ℃; Nws muaj kev ua haujlwm siab dua ntawm 16-60 ℃; Nws yuav ua rau cov kab mob kom tuag thaum qhov kub tau siab tshaj 60 ℃.
2. PHEEJ: Qhov nruab nrab ntawm PH tus nqi yog nruab nrab ntawm 5.5-9.5, nws tuaj yeem loj hlob sai sai thaum tus nqi py ntawm 6.6-7.4.
3. Daolved oxygen: hauv lub taub dej Aogygen yog tsawg kawg yog 2mg / cov kab mob uas muaj cov khoom siv hluav taws xob nrawm nrawm dua li ntawm lub hom phiaj.
4. Micro-ntsiab lus: Cov kab mob tawm tswv yim yuav tsum muaj ntau yam poov, tshuaj ntsuab, thiab lwm yam av yuav muaj cov dej thiab cov dej kom txaus.
5. Supinity: Haum rau ob qho tib si dej hiav txwv thiab dej tshiab, nws tuaj yeem tiv taus txog 6% salinity.
6. Kev tiv thaiv toxicity: nws tuaj yeem tiv thaiv kev siv tshuaj lom cov tshuaj lom neeg lom zem, suav nrog cov kab mob chlorides, cyanides thiab cov hlau hnyav.
