Kusintha kwa Zachilengedwe ndi Zotsatira Zake pa Ulimi
Pendauluan
Kusintha kwa Zachilengedwe (Green Revolution) kumatanthauza nthawi yowonjezereka kwa ulimi kuyambira pakati pa zaka za m'ma 20, chifukwa cha kugwiritsa ntchito ukadaulo watsopano waulimi. Izi zinayamba cha m'ma 1940 ndipo zinakula mofulumira m'zaka makumi angapo zotsatira, zomwe zinakhudza mayiko osiyanasiyana padziko lonse lapansi, makamaka mayiko omwe akutukuka kumene monga India, Mexico, ndi Philippines.
Mbiri ndi Mbiri ya Green Revolution
Mawu akuti Green Revolution adayambitsidwa koyamba ndi William Gaud, woyang'anira USAID, mu 1968. Komabe, kayendetsedwe kake kanayamba zaka zingapo m'mbuyomo pamene Norman Borlaug, yemwe nthawi zambiri amatchedwa "Bambo wa Green Revolution," adayambitsa mitundu ya tirigu yolimbana ndi matenda komanso yobala zipatso zambiri ku Mexico.
M'zaka za m'ma 1940, Borlaug anayesa kuyambitsa ndikukula mitundu iyi ya tirigu ndi chiyembekezo chokweza chitetezo cha chakudya ku Mexico. Pambuyo pa zotsatira zake zodabwitsa, ukadaulo ndi chidziwitso cha Borlaug chinafalikira mwachangu kumayiko ena omwe anali ndi mavuto ofanana ndi chitetezo cha chakudya. M'nthawi yochepa, Green Revolution inaphatikizapo kugwiritsa ntchito feteleza ndi mankhwala ophera tizilombo, kuthirira bwino, komanso kuyambitsa mitundu ya mpunga, chimanga, ndi tirigu yobala zipatso zambiri (HYVs).
Kusintha kwa Ukadaulo mu Ulimi
Gawo lalikulu la Green Revolution linali ukadaulo watsopano waulimi ndi kuwonjezereka kwa makina. Ukadaulo watsopanowu unaphatikizapo kupanga mitundu yobala zipatso zambiri (HYVs), yomwe imatha kusintha bwino kusintha kwa chilengedwe ndipo nthawi zambiri imalimbana ndi tizilombo ndi matenda. Kuphatikiza mitundu yabwino kwambiri iyi ndi njira zabwino kwambiri zaulimi komanso zamakono kunapangitsa kuti zokolola ziwonjezeke kwambiri.
Kuwonjezera pa mitundu yatsopano ya mbewu, alimi akuyambanso kugwiritsa ntchito feteleza wambiri wa mankhwala kuti apereke michere yofunika ku mbewu zawo. Mwachitsanzo, nayitrogeni, phosphorous, ndi potaziyamu ndi zinthu zofunika kwambiri zomwe nthawi zambiri zimakhala zosoŵa m'nthaka yachilengedwe. Pogwiritsa ntchito feteleza wa mankhwala, alimi angatsimikizire kuti mbewuzo zimalandira michere yomwe zimafunikira kuti zikule bwino.
Njira zothirira zasintha kwambiri. Njira zothirira zogwira mtima komanso zogwira mtima zimachepetsa kudalira mvula komanso zimachepetsa chiopsezo cha kulephera kwa mbewu chifukwa cha chilala. Mankhwala ophera tizilombo ndi mankhwala ophera udzu amagwiritsidwanso ntchito kwambiri kuteteza mbewu ku tizilombo ndi udzu, ngakhale kuti kugwiritsa ntchito mankhwala amenewa kwakhala kotsutsana chifukwa cha momwe amakhudzira chilengedwe ndi thanzi la anthu.
Zotsatira pa Kupanga Chakudya
Kusintha kwa Zachilengedwe kunali kofunika kwambiri pakukulitsa kupanga chakudya padziko lonse lapansi. Mayiko monga India ndi Mexico adakumana ndi kuwonjezeka kwakukulu kwa zokolola m'kanthawi kochepa. Mwachitsanzo, ku India, kupanga mpunga ndi tirigu kunakwera kwambiri pakati pa zaka za m'ma 1960 ndi 1980, zomwe zinasintha dzikolo kuchoka pa kuitanitsa chakudya kuchokera kumayiko ena kupita ku kutumizira chakudya kunja.
Kupanga chakudya chochuluka kumathandizanso kukhazikika kwa mitengo ya chakudya m'misika yapadziko lonse, kuchepetsa kufooka kwa mitengo chifukwa cha kusinthasintha kwa chakudya komwe kungawopseze chitetezo cha chakudya padziko lonse. Mayiko omwe akutukuka kumene omwe kale anali pachiwopsezo chachikulu cha njala ndi kusowa zakudya m'thupi akuyamba kuwona kusintha kwa kupezeka kwa chakudya.
Zotsatira pa chikhalidwe cha anthu ndi zachuma
Kuchuluka kwa kupanga chakudya komwe kudachitika chifukwa cha Green Revolution kudabweretsa zabwino zambiri pazachuma. Kuwonjezeka kwa chitetezo cha chakudya kudapangitsa kuti chiwerengero cha njala ndi kusowa zakudya m'thupi chichepe m'maiko ambiri omwe akutukuka kumene. Chifukwa cha kuchuluka kwa chakudya chomwe chimapezeka, madera ena adachepetsanso umphawi chifukwa cha kuchuluka kwa ndalama zomwe amapeza chifukwa cha ulimi.
Kuchuluka kwa zokolola kumabweretsanso ntchito zatsopano mu gawo la ulimi, mwachindunji komanso kudzera m'mafakitale ena monga kupanga feteleza, zida zaulimi, ndi kukonza ulimi. Zotsatira zake, mabanja ambiri akumidzi akhala ndi moyo wabwino. Komabe, palinso zotsatirapo zina zoyipa zomwe ziyenera kukumbukiridwa.
Zotsatira Zoipa Zachilengedwe ndi Zachikhalidwe
Ngakhale zotsatira zabwino za Green Revolution zakhala zazikulu, palinso zotsatirapo zoyipa zazikulu. Kugwiritsa ntchito kwambiri feteleza, mankhwala ophera tizilombo, ndi mankhwala ophera udzu kwayambitsa mavuto osiyanasiyana azachilengedwe. Kugwiritsa ntchito kwambiri mankhwala amenewa kwaipitsa nthaka ndi madzi. Kuchuluka kwa mankhwala kumatha kuwononga kapangidwe ka nthaka ndi thanzi lake, kuchepetsa chonde chake pakapita nthawi.
Kuphatikiza apo, kuthirira mopitirira muyeso kwabweretsa mavuto monga kutulutsa madzi ambiri pansi pa nthaka, zomwe zikuopseza kukhazikika kwa madzi. M'madera ena, kugwiritsa ntchito ukadaulo uwu kwapangitsa kuti mitengo idulidwe ndi kuwonongeka kwa zachilengedwe.
Kumbali ya chikhalidwe cha anthu, Green Revolution inapanganso kusalingana kwachuma. Si alimi onse omwe anali ndi mwayi wofanana wopeza ukadaulo watsopano ndi zida zamakono zaulimi. Chifukwa cha zimenezi, alimi akuluakulu omwe akanatha kugwiritsa ntchito ukadaulowu adapeza zokolola zambiri komanso ndalama zambiri, pomwe alimi ang'onoang'ono omwe analibe mwayi wopeza ukadaulowu nthawi zambiri ankasiyidwa kumbuyo ndipo ankakakamizidwa kugulitsa malo awo kwa alimi akuluakulu kapena makampani.
Mayankho ndi Njira Zokhazikika
Pofuna kuthana ndi mavuto omwe abwera chifukwa cha kusintha kwa nyengo, pakufunika njira yokhazikika yogwiritsira ntchito njira zaulimi. Ulimi wachilengedwe ndi ulimi wa agroecology zikutchuka ngati njira zina zosamalira chilengedwe. Ulimi wachilengedwe umapewa kugwiritsa ntchito mankhwala opangidwa, pomwe ulimi wa agroecology umaganizira za chilengedwe, chikhalidwe, komanso zachuma za machitidwe aulimi.
Ukadaulo wamakono ukhozanso kusinthidwa kuti ukhale wosamalira chilengedwe. Mwachitsanzo, njira zothirira pogwiritsa ntchito madontho zimasunga madzi bwino kuposa kuthirira mwachizolowezi. Mankhwala ophera tizilombo ndi feteleza zachilengedwe akupangidwanso ndikugwiritsidwa ntchito kuti achepetse mavuto owononga chilengedwe.
Thandizo lochokera ku maboma ndi mabungwe apadziko lonse lapansi ndilofunika kwambiri pakulimbikitsa njira zokhazikika zaulimi. Izi zikuphatikizapo kupereka mwayi kwa alimi ang'onoang'ono kuti apeze njira zamakono zobiriwira, kupereka zolimbikitsa kuti alimi azitsatira njira zokhazikika zaulimi, komanso kupereka maphunziro ndi maphunziro kwa alimi pa njira zolima zosawononga chilengedwe.
Mapeto
Kusintha kwa Zachilengedwe kwabweretsa kusintha kwakukulu mu gawo la ulimi padziko lonse lapansi, ndi kuwonjezeka kwakukulu kwa kupanga chakudya komanso chitetezo cha chakudya m'maiko ambiri. Komabe, zotsatira za chilengedwe ndi chikhalidwe cha anthu zomwe zimachitika chifukwa chogwiritsa ntchito ukadaulo uwu nazonso ndi zenizeni ndipo ziyenera kuthetsedwa. Tsogolo la ulimi limafuna njira yokhazikika komanso yophatikiza anthu onse kuti zitsimikizire kuti zabwino za Kusintha kwa Zachilengedwe sizikusangalatsidwa ndi anthu ochepa okha, komanso zimathandizira kukhazikika kwa chilengedwe ndikuthandizira madera ang'onoang'ono alimi.
