Zotsatira za Kulima Nsomba pa Zachilengedwe
Ulimi wa m'madzi ndi wofunika kwambiri pakukwaniritsa kufunikira kwa mapuloteni a nyama padziko lonse lapansi. Pamene nsomba m'madera osiyanasiyana zikuvutika ndi kusodza mopitirira muyeso ndi kusintha kwa nyengo, kulima nsomba, nkhanu, nkhono, ndi nyanja za m'nyanja kumaonedwa ngati njira yothetsera vuto la chakudya komanso kuthandizira chuma cha m'mphepete mwa nyanja ndi kumidzi. Komabe, ngakhale kuti ulimi wa m'madzi umakhudzanso zachilengedwe zomwe zimafuna kumvetsetsa bwino. Zotsatirazi nthawi zambiri sizimakhala zoyipa; njira zina zoweta nsomba zimatha kukweza ubwino wa madzi , pomwe zina zimatha kuchepetsa mphamvu yonyamula zinthu zachilengedwe ngati sizisamalidwa bwino.
1. Kuipitsa kwa zakudya ndi kuphatikizika kwa chakudya
Chimodzi mwa zinthu zomwe zimakambidwa kwambiri pa chilengedwe ndi kuchuluka kwa michere m'madzi—makamaka nayitrogeni ndi phosphorous—m'madzi. Izi zimachokera ku chakudya chosadyedwa, ndowe za nsomba, ndi zinyalala za kagayidwe kachakudya. M'malo osungiramo nsomba zambiri monga malo oyandama (KJA) m'nyanja kapena m'nyanja, kapena m'madziwe okhala ndi nkhanu zambiri, kuchuluka kwa michere m'madzi kungayambitse eutrophication, kuphulika kwa kukula kwa algae. Eutrophication imatha kuchepetsa kuchuluka kwa mpweya wosungunuka pamene algae imafa ndikuwola, zomwe zimapangitsa kuti pakhale hypoxia komanso kufa kwa nsomba zambiri, zomwe zimawetedwa komanso zakuthengo. M'madzi otsekedwa kapena omwe madzi ake samayenda bwino, izi zitha kukhala zoopsa kwambiri chifukwa cha kusakwanira kwachilengedwe.
2. Kuchepa kwa ubwino wa matope ndi kusintha kwa madzi
Kupitirira m'mphepete mwa madzi, zotsatira za ulimi wochuluka wa nsomba m'madzi zimawonekeranso m'matope (pansi pa madzi). Zinthu zachilengedwe zomwe zimasungidwa kuchokera ku chakudya chotsala ndi ndowe zimatha kusonkhana, zomwe zimapangitsa kuti pansi pakhale mpweya woipa (wopanda mpweya). Zotsatira zake, njira yowola imapanga mankhwala monga hydrogen sulfide, omwe ndi oopsa kwa zamoyo zam'madzi zam'madzi zam'madzi zam'madzi. Kusintha kwa madera am'madzi am'madzi am'madzi am'madzi monga zamoyo zam'madzi zam'madzi monga nyongolotsi, nkhono zazing'ono zam'madzi, ndi zinyama zazing'ono zam'madzi ...
3. Kugwiritsa ntchito chakudya ndi kukakamiza zinthu za m'nyanja
Kuweta mitundu ya nsomba zodya nyama (monga nsomba ya salimoni, nsomba za m'madzi, kapena nsomba zina za m'madzi zamtengo wapatali) nthawi zambiri kumafuna chakudya chokhala ndi mapuloteni ambiri, chomwe m'mbuyomu chimadalira kwambiri ufa wa nsomba ndi mafuta a nsomba kuchokera ku nsomba zogwidwa. Ngati zosakaniza za chakudya zimachokera ku nsomba zosasamalidwa bwino, ulimi wa nsomba ukhoza kusintha mphamvu kuchokera ku chilengedwe china kupita ku china. Ngakhale kuti chizolowezi chomwe chilipo pamakampani opanga chakudya ndi chosintha zosakaniza zochokera ku zomera, tizilombo, tizilombo tating'onoting'ono, kapena zinthu zina za usodzi, kusinthaku kumafuna kuyang'aniridwa kuti tipewe zotsatira zatsopano, monga kukulitsa malo azinthu zina zaulimi kapena kuchuluka kwa mpweya woipa.
4. Matenda, tizilombo toyambitsa matenda, ndi kugwiritsa ntchito mankhwala osokoneza bongo
Kuchuluka kwa nsomba m'machitidwe olerera nsomba kumawonjezera chiopsezo cha matenda ndi tizilombo toyambitsa matenda. Kufalikira kwa matenda kukachitika, alimi kapena alimi angagwiritse ntchito maantibayotiki, mankhwala ophera tizilombo toyambitsa matenda, kapena mankhwala ena kuti achepetse imfa. Kugwiritsa ntchito molakwika kungathe kuipitsa madzi ndikuyambitsa kukana maantibayotiki, vuto la thanzi lomwe limakhudza kwambiri gawo la usodzi. Kuphatikiza apo, matenda ochokera kumagulu olerera nsomba amatha kufalikira ku nsomba zakuthengo, makamaka ngati famuyo ili pafupi ndi njira zosamukira kapena malo ofunikira okhala. Zotsatirazi zimafuna njira zodzitetezera kwambiri ku tizilombo toyambitsa matenda, katemera (wa mitundu ina), ndi njira zowunikira thanzi la nsomba nthawi zonse .
5. Kuthawa nsomba zowetedwa ndi zoopsa zomwe zingakhudze mitundu yosiyanasiyana ya zamoyo
Nsomba zowetedwa zimatha kuthawa m'makhola chifukwa cha kuwonongeka kwa ukonde, mphepo yamkuntho, kapena zolakwika pakugwira ntchito. Ngati nsomba zomwe zathawa ndi zamtundu wina kapena zoberekedwa mwachisawawa, pali chiopsezo cha zotsatirapo zachilengedwe: mpikisano ndi nsomba zakuthengo, kulusa, komanso kuswana mitundu yosiyanasiyana zomwe zimasintha kusiyanasiyana kwa majini a anthu am'deralo. Nthawi zina, mitundu yolowa m'malo imatha kusintha kapangidwe ka zachilengedwe ndikuletsa mitundu yomwe ilipo. Chifukwa chake, kusankha mitundu yoyenera yakomweko, kugwiritsa ntchito njira zolimba zosungira, komanso kukhazikitsa njira zadzidzidzi pakagwa kutayikira ndikofunikira kwambiri kuti muchepetse zotsatirapo.
6. Kusintha malo okhala m'mphepete mwa nyanja ndi kuwonongeka kwa zachilengedwe
Ulimi wa nsomba m'mphepete mwa nyanja , makamaka ulimi wa nkhanu, wakhala ndi mbiri yakale yosintha mitengo ya mangrove. Mitengo ya mangrove imagwira ntchito ngati chitetezo cha m'mphepete mwa nyanja, malo osungira mpweya, zopinga zolowera m'madzi amchere , komanso malo ofunikira okhala nsomba ndi zomera zina. Kutayika kwa mitengo ya mangrove kungapangitse kuti nthaka iwonongeke, kuwononga ubwino wa madzi , komanso kuchepetsa ntchito zachilengedwe zomwe zimapereka phindu lalikulu kwachuma kwa anthu ammudzi. Ngakhale kuti machitidwe amakono akugogomezera kwambiri chitukuko cha ulimi wa nsomba komanso kukonzanso malo okhala, mavuto akuluakulu akadalipo, makamaka m'madera omwe ali ndi mapulani ochepa kapena osayang'anira bwino zachilengedwe.
7. Zotsatira pa kagwiritsidwe ntchito ka madzi ndi mchere
Mu malo akuluakulu okhala ndi madzi abwino kapena maiwe omwe amafunika kusintha madzi nthawi zonse, kufunika kwa madzi kungakhale vuto la chilengedwe komanso chikhalidwe cha anthu, makamaka m'madera omwe madzi sapezeka mokwanira. M'madziwe a m'mphepete mwa nyanja, kutulutsa madzi ndi kutayikira kwa madzi otayira kungakhudze kuchuluka kwa mchere m'madzi ozungulira. Ngati ngalande sizisamalidwa bwino, madzi amchere amatha kulowa pansi kapena m'madzi abwino (kulowerera kwa mchere), zomwe zingakhudze ulimi ndi zosowa za anthu ammudzi.
8. Kutulutsa mpweya woipa m'nyumba ndi mpweya woipa womwe umawononga chilengedwe
Ulimi wa m'madzi ulinso ndi mpweya woipa. Magwero akuluakulu ndi monga kupanga chakudya (mphamvu, mayendedwe, zipangizo zopangira), kugwiritsa ntchito magetsi popereka mpweya ndi kupopera, komanso mpweya wochokera m'matope ndi m'madziwe (monga methane pansi pa mikhalidwe ina). Zizindikiro za mpweya woipa zimasiyana kwambiri pazinthu ndi machitidwe. Ulimi wa nsomba zam'madzi ndi za m'nyanja nthawi zambiri umaonedwa kuti uli ndi mpweya woipa wochepa chifukwa sufuna chakudya chowonjezera ndipo ukhoza kuyamwa michere. Komabe, kuwerengera koyenera kuyenera kuphatikizapo unyolo wonse woperekera chakudya, kuphatikizapo kukonza ndi kugawa.
9. Zotsatira zabwino: mwayi wokonzanso zachilengedwe kudzera mu ulimi wokhazikika
Si zonse zomwe zimawononga chilengedwe. Kulima nkhono, oyster, ndi nyanja yamchere kungathandize kukweza ubwino wa madzi mwa kuyamwa michere ndi tinthu tating'onoting'ono tomwe timapachikidwa. Lingaliro la Integrated Multi-Trophic Aquaculture (IMTA)—kuphatikiza nsomba (opanga michere) ndi nyanja yamchere ndi bivalves (zoyamwa michere)—kungachepetse zinyalala pamene kuonjezera ndalama zosiyanasiyana. Kuphatikiza apo, kupita patsogolo kwaukadaulo monga njira zozungulira madzi (RAS), biofloc, ndi kukonza madzi otayira m'madambo kungachepetse kuipitsa chilengedwe, ngakhale kuti ndalama zomwe zimayikidwa m'ndalama zimakhala zambiri.
10. Njira zochepetsera zotsatira zake
Pofuna kuchepetsa kuwonongeka kwa chilengedwe, njira zingapo zofunika zitha kugwiritsidwa ntchito:
1. Kudziwa malo kutengera mphamvu yonyamulira: kusankha malo okhala ndi mphamvu yokwanira yamagetsi ndi kayendedwe ka madzi, kutali ndi malo osavuta kusungiramo madzi, ndikuganizira mphamvu ya michere.
2. Kusamalira bwino chakudya: kugwiritsa ntchito chakudya chabwino, kudyetsa molondola, ndi kuyang'anira FCR (chiŵerengero chosinthira chakudya) kuti muchepetse zinyalala.
3. Kukonza zinyalala ndi madzi otayira: kuyika matope m'nthaka, zosefera zamoyo, malo onyowa omangidwa, kapena njira zobwezeretsera madzi kuti zichepetse kutulutsa michere m'nthaka.
4. Chitetezo cha chilengedwe ndi thanzi la nsomba: kuika mbewu m'malo otetezedwa, kuyang'anira nthawi zonse, kupereka katemera ngati alipo, ndi malamulo oletsa maantibayotiki.
5. Kuteteza malo okhala: kupewa kusintha mitengo ya mangrove, kukhazikitsa njira zokonzanso malo, ndikuonetsetsa kuti mapulani a malo akutsatira.
6. Chitsimikizo ndi miyezo: kukhazikitsa miyezo yokhazikika (monga njira zabwino zaulimi/CBIB, kapena njira zapadziko lonse lapansi zotsimikizira) kuti zilimbikitse kusintha kosalekeza.
Mapeto
Ulimi wa m'madzi uli ndi kuthekera kwakukulu kothandizira chakudya ndi chitetezo cha zachuma, komanso uli ndi zotsatirapo zazikulu zachilengedwe: kuipitsa michere, kusintha kwa zinyalala, zoopsa za matenda, kutulutsa nsomba, ndi kusintha malo okhala m'mphepete mwa nyanja. Kuyang'anira sayansi, ulamuliro wamphamvu, komanso kugwiritsa ntchito ukadaulo ndi machitidwe aulimi oyera ndizofunikira kwambiri. Ndi kukonzekera bwino malo, kugwiritsa ntchito bwino chakudya, kuyang'anira zinyalala, komanso njira zophatikizika monga IMTA, ulimi wa m'madzi ukhoza kukula popanda kuwononga thanzi la chilengedwe. Kusunga chilengedwe si chisankho cha makhalidwe abwino okha; ndi chofunikira kwambiri kuti ulimi wa m'madzi ukhalebe wopindulitsa kwa nthawi yayitali.
