Malunga namaphepha aphakathi kwinkulungwane yeshumi elinesithoba, ukufuduka kwezolimo e-United States kwabona uninzi lwamafama luqala ukucoca indawo eyinkangala, lusiya ngasentshona ukuya kumathafa kunye nomda osemazantsi-ntshona, ngokulandelelanayo. Njengoko ezolimo zifuduka, amafama aye aziqonda ngakumbi iimeko eziguquguqukayo, nto leyo ethe yaphawula utshintsho oluthe ngcembe ukusuka kwihlathi lommandla osempuma ukuya kwimozulu eyomileyo yengca esentshona. Umahluko kwiqondo lokushisa kunye nendawo yejografi kukhokelele kwizityalo ezahlukeneyo kunye nemikhwa kwiindawo ezimbini. Ngaphambi kokuba umhlaba ucocwe, wawunamatye kwaye ungenamanzi. Xa kwakungena ezolimo, ukunqongophala kwezixhobo zokulima ezilungelelanisiweyo ekuhlaleni kwakuthetha ukuba umhlaba omkhulu wawungahlali mntu kwaye ungabangwa. Ukuze baziqhelanise nemeko entsha yokutyala, abalimi abaninzi baqalisa ukubiyela ngocingo oluhlabayo kwiindawo abatyala kuzo.
Ngenxa yokufuduka ukusuka empuma ukuya entshonalanga, ukuya kwinani elikhulu labantu ukubonelela ngezinto eziluhlaza, ngempuma yokuqala baye bakha iindonga zamatye, kwinkqubo yokufudukela entshonalanga kwaye bafumana imithi emininzi emide, iingcingo zokhuni kunye nokusuka ekrwada. izinto kule ndawo ngokuthe ngcembe yandiswa ukuya emazantsi, ngelo xesha zabasebenzi cheap kwaye uvumele ulwakhiwo kube lula kakhulu, kodwa kwinxalenye esentshona ngenxa ilitye kunye nemithi azininzi kangako, ucingo aluyi kumisa ngokubanzi. Kodwa kwintshona ekude, apho amatye nemithi yayingekho mininzi kangako, ukubiya kwakungasetyenziswa ngokubanzi.
Ngeentsuku zokuqala zokubuyiselwa komhlaba, ngenxa yokunqongophala kwezinto, ingcamango yemveli yabantu yocingo inokudlala indima yokukhusela kwimida yabo ukusuka kwamanye amandla angaphandle ukutshabalalisa kunye nokunyathelwa kwezilwanyana, ngoko ingqiqo yokukhusela inamandla kakhulu.
Ngenxa yokungabikho kweenkuni namatye, abantu baqalisa ukukhangela ezinye iindlela endaweni yokubiya ukukhusela izityalo zabo. Ebutsheni beminyaka yee-1860 neyee-1870, abantu baqalisa ukulima izityalo ezinameva ukuze kubiyelwe ngazo, kodwa bengazange baphumelele ngenxa yokunqongophala kwezityalo, ixabiso lazo eliphakamileyo, nokungalungi kokwakha iingcingo, bashiywa. Ukungabikho kocingo kwenza ukuba inkqubo yokucoca umhlaba ingabi nampumelelo. Kwaba ngowe-1873 apho uphononongo olutsha lwatshintsha imeko yabo xa uDeKalb, eIllinois, wayila ukusetyenziswa kocingo oluhlabayo ukugcina umhlaba wabo. Ukususela ngeli xesha, ucingo oluhlabayo lusanda kungena kwimbali yoshishino.
Inkqubo yokuvelisa kunye nobuchwepheshe.
E-China, uninzi lweefektri ezivelisa ucingo oluhlabayo zisebenzisa iingcingo ezenziwe ngegalvanized okanye iplastiki yocingo olugqunywe ngeplastiki ngqo kucingo oluhlabayo. Le ndlela yokubopha kunye nokujija ucingo oluhlabayo yandisa ukusebenza kakuhle kwemveliso, kodwa ngamanye amaxesha inento engalunganga yokuba ucingo oluhlabayo alulungiswanga ngokwaneleyo. Ngophuhliso lwetekhnoloji, ngoku kukho abanye abavelisi baqala ukusebenzisa ukongezwa kwenkqubo ethile ye-crimping, ukuze umphezulu wocingo ungajikelezi ngokupheleleyo, ophucula kakhulu ukuzinzisa kocingo oluhlabayo.
Ixesha lokuposa: Nov-01-2023