Izinto Ezichaphazela Umgangatho Womhlaba
Umgangatho womhlaba kukukwazi komhlaba ukwenza imisebenzi yawo ngokugqibeleleyo, kuquka njengendawo yokukhulisa izityalo, indawo yokugcina amanzi kunye nesihluzi, umboneleli wezondlo, kunye nendawo yokuhlala yezinto eziphilayo ezahlukeneyo. Umhlaba osemgangathweni uxhasa ezolimo ezizinzileyo, ugcina ulungelelwaniso lokusingqongileyo, kwaye unegalelo kukhuseleko lokutya. Nangona kunjalo, umgangatho womhlaba awumi ndawonye; unokuphucula okanye unciphe ngokuxhomekeke kwiimeko ezahlukeneyo zendalo kunye nemisebenzi yabantu. Ezi zilandelayo zezona zinto ziphambili ezichaphazela umgangatho womhlaba.
1. Inkqubo yoBuchule beZinto kunye noBume boMhlaba
Izinto eziza kuqala zizinto zokuqala umhlaba owakhiwa ngazo, ezinokuba lilitye eliphuma kwi-igneous, i-sediment, okanye izinto eziphilayo. Uhlobo lwezinto eziza kuqala luchaza iimpawu zokuqala zomhlaba, ezifana nomxholo weeminerali, ubume obusisiseko, kunye nokuchuma kwendalo. Umzekelo, umhlaba ovela kwilitye lentaba-mlilo udla ngokuba neeminerali ezininzi kwaye utyebile, ngelixa umhlaba ovela kwilitye lesanti urhabaxa kwaye unamandla okugcina amanzi aphantsi.
Ukongeza kwizinto eziza kuqala, iinkqubo zokwakheka komhlaba (ukuhla kwemozulu ngokwasemzimbeni, ngokwekhemikhali, nangokwebhayoloji) nazo zimisela uphuhliso lwesakhiwo somhlaba kunye nobunzulu bawo. Umhlaba omncinci uhlala ungenazo iindawo eziphuhlileyo (iileya), ngoko ke umgangatho wawo unokuba mda ngakumbi kunomhlaba ovuthiweyo nozinzileyo.
2. Imozulu: Imvula kunye nobushushu
Imozulu inefuthe elikhulu kwiimpawu zomzimba nezekhemikhali zomhlaba. Imvula enkulu inokukhawulezisa ukuwohloka kwamatye kunye nokwenziwa komhlaba, kodwa inokubangela ukuvuza kwezondlo ezifana ne-nitrogen, i-potassium, kunye ne-magnesium kwiindawo ezisezantsi. Ngenxa yoko, umhlaba kwiindawo ezishushu ezifumileyo uhlala une-asidi eninzi kwaye uhlwempuzekile kwizondlo ezithile, nokuba izityalo zibonakala ziluhlaza.
Ubushushu buchaphazela umsebenzi weentsholongwane ezincinci kunye nesantya sokubola kwezinto eziphilayo. Kwiindawo ezifudumeleyo, ukubola kwenzeka ngokukhawuleza, okwenza izondlo zifumaneke lula, kodwa iindawo ezigciniweyo zezinto eziphilayo zinokuphela ngokukhawuleza ukuba akukho kuphinda kuzaliseke. Ngokwahlukileyo koko, kwiindawo ezipholileyo, ukubola kuhamba kancinci, okuvumela izinto eziphilayo ukuba ziqokelelene, kodwa ukukhululwa kwezondlo kuhamba kancinci.
3. Inkcazo-mhlaba kunye noGutyulo lwamanzi
Umhlaba othambekileyo, ukuphakama, kunye nemilo yomphezulu zichaphazela ukukhukuliseka komhlaba, ukuhamba kwamanzi, kunye nokuqokelelwa kwezinto eziphilayo. Umhlaba othambekileyo usengozini yokukhukuliseka komhlaba, nto leyo eyenza ukuba umhlaba ongaphezulu ochumileyo ulahleke lula. Ukulahleka komhlaba ongaphezulu akunciphisi nje kuphela ukuchuma komhlaba kodwa konakalisa nesakhiwo sawo kunye namandla okugcina amanzi.
Ukukhupha amanzi kukwamisela umgangatho womhlaba. Umhlaba ogcwele amanzi amaninzi awunayo ioksijini, nto leyo eyenza kube nzima ukuba iingcambu zezityalo ziphefumle, kwaye iintsholongwane eziluncedo ziyawa. Phantsi kweemeko ezibangelwa yi-anaerobic, iikhompawundi ezinetyhefu zinokwakheka, zithintele ukukhula kwezityalo. Kwelinye icala, umhlaba okhupha amanzi ngokukhawuleza (njengomhlaba onesihlabathi) awukwazi ukugcina amanzi kunye nezondlo.
4. Ubume bomhlaba kunye nolwakhiwo lwawo
Ubume bomhlaba bubhekisa kumlinganiselo wesanti, intlaka, kunye neenxalenye zodongwe. Ubume buchaphazela amandla omhlaba okugcina amanzi, ukuvumela ukutshintshiselana komoya, kunye nokugcina izondlo. Umhlaba we-clayey uhlala ugcina amanzi kunye nezondlo ngcono, kodwa uxinene lula kwaye kunzima ukusebenza ngawo ukuba unesakhiwo esibi. Umhlaba wesanti ukhululekile kwaye kulula ukusebenza ngawo, kodwa ulahlekelwa ngamanzi kunye nezondlo ngokukhawuleza.
Ulwakhiwo lomhlaba yindlela amasuntswana omhlaba adibana ngayo ukuze enze ii-aggregates. Ulwakhiwo oluhle (oluqhekekileyo/oluyi-granular) lwenza umhlaba ube nemingxunya ngakumbi, nto leyo enceda ukungena kweengcambu, ukuphucula umoya, kunye nokwandisa ukungena kwamanzi. Ulwakhiwo olonakeleyo—umzekelo, ngenxa yokulinywa kakhulu okanye ukuxinana—lukhokelela kumhlaba oqinileyo, olunokuxinana kwamanzi phezu komhlaba, kwaye lungabi nakukhula kakuhle kweengcambu.
5. Izinto eziphilayo kunye nomxholo weHumus
Izinto eziphilayo zezinye zezona zinto zibalulekileyo ezibonisa umgangatho womhlaba. Iintsalela zezityalo, umgquba, umgquba kunye ne-humus ziphucula ulwakhiwo lomhlaba, zandisa amandla okugcina amanzi, kwaye zisebenza njengomthombo wamandla kwiintsholongwane. I-humus ikwanceda ekubopheni izondlo ukuze zingatsalwa lula, yandisa amandla okutshintshana kwe-cation (CEC), kwaye izinzisa i-pH yomhlaba.
Umhlaba onezinto eziphilayo ezincinci udla ngokukhukuliseka, wome ngokukhawuleza, awunazo iintsholongwane, kwaye ufuna izichumisi ezingaphezulu ukuze kufunyanwe iziphumo ezifanayo. Ke ngoko, ukulawula izinto eziphilayo ngokufaka umgquba, ukubuyisela ingca, umgquba oluhlaza, okanye umgquba kubalulekile.
6. I-pH yomhlaba kunye nokufumaneka kweZondlo
I-pH yomhlaba imisela ukunyibilika kunye nokufumaneka kwezondlo kwizityalo. Ngokubanzi, i-pH efanelekileyo kwizityalo ezininzi iphakathi kwe-5,5 kunye ne-7,0. Xa i-pH iphantsi kakhulu (i-asidi), izinto ezifana ne-aluminium kunye ne-iron zinokunyibilika ngakumbi kwaye zibe yingozi kwiingcambu, ngelixa i-phosphorus ingafumaneki lula. Xa i-pH iphezulu kakhulu (i-alkaline), izondlo ezincinci ezifana ne-zinc, i-manganese, kunye ne-boron zinokungafumaneki.
Umgangatho womhlaba ukwaxhomekeke kwibhalansi yezakhamzimba (N, P, K, Ca, Mg, S) kunye nezakhamzimba (Fe, Mn, Cu, Zn, B, Mo, Cl). Ukunqongophala okanye ukugqithisa kwesona sondlo esinye kunokuthintela ukukhula kwesityalo. Ukuchumisa ngokufanelekileyo, ukugalelwa kwe-lime yomhlaba one-asidi, kunye nokongezwa kwezinto eziphilayo kunokunceda ukugcina i-pH kunye nokufumaneka kwezondlo.
7. Umsebenzi Webhayoloji Womhlaba
Umhlaba yindawo ephilayo ehlala iimpethu zomhlaba, iifungi, iibhaktheriya, ii-actinomycetes, kunye nezinye izinto ezincinci ezahlukeneyo. Zidlala indima ekuboleni kwezinto eziphilayo, ukuqiniswa kwe-nitrogen, ukwakheka komhlaba kunye nolawulo lwendalo lwezifo. Umhlaba onomsebenzi ophezulu webhayoloji ngokubanzi utyebile kwaye uzinzile.
Izenzo ezonakalisa ubomi bomhlaba, ezinje ngokusetyenziswa kakhulu kwezibulali-zinambuzane, ukutshiswa kweentsalela zezityalo, okanye ukungabikho kwezinto eziphilayo, zinokunciphisa impilo yomhlaba. Ngokwahlukileyo koko, ukwahlukahluka kwezityalo, ukujikeleza, kunye nokusetyenziswa kwezichumisi eziphilayo kunokunyusa ubuninzi bezinto eziphilayo emhlabeni kunye nomsebenzi webhayoloji.
8. Iindlela zokusetyenziswa nokulawulwa koMhlaba
Imisebenzi yabantu inefuthe elikhulu kumgangatho womhlaba, ingakumbi kumhlaba wezolimo, amasimi, kunye neendawo zophuhliso. Ukulima umhlaba ngokugqithisileyo kunokukhawulezisa ukukhukuliseka komhlaba, konakalisa isakhiwo somhlaba, kwaye kunciphise izinto eziphilayo. Ukusetyenziswa kwezichumisi zeekhemikhali ngaphandle kobonelelo olufanelekileyo lwezinto eziphilayo kunokuwuqoba umhlaba kwaye kwandise ukuxhomekeka kwizinto ezifakwayo.
Iindlela ezilungileyo zolawulo ziquka ukugcinwa komhlaba namanzi (ukubeka iitayile, imiqolo, izityalo ezigqumayo), ukujikeleza kwezityalo, ukutyala iimbotyi, ukuchumisa ngokulinganayo, kunye nokulima okuncinci. Ngaphezu koko, ukugcina izityalo ezigqumayo kunye nokuphepha ukucocwa kunceda ekunciphiseni ukukhukuliseka komhlaba kunye nokugcina umhlaba ongaphezulu.
9. Ungcoliseko Lomhlaba
Ungcoliseko oluvela kwinkunkuma yemizi-mveliso, iintsalela zezibulali-zinambuzane, iintsimbi ezinzima, okanye inkunkuma yasekhaya lunokonakalisa umgangatho womhlaba kakhulu. Izinto ezinobuthi zinokubulala izinto eziphilayo emhlabeni, ziphazamise ukukhula kwezityalo, kwaye zingene nakwityathanga lokutya kwabantu ngezityalo. Umhlaba ongcolisiweyo uhlala ufuna ukulungiswa okubizayo nokuthatha ixesha.
Imizamo yokuthintela iyasebenza ngakumbi kunokubuyisela izinto kwimeko yazo, umzekelo ngolawulo olufanelekileyo lwenkunkuma, ukusetyenziswa kwezibulali-zinambuzane ngokwemilinganiselo, kunye nokujonga rhoqo umgangatho womhlaba.
Ukuqukumbela
Umgangatho womhlaba uphenjelelwa yindibaniselwano yezinto zendalo—ezifana nezinto eziza kuqala, imozulu, i-topography, ubunjani, i-pH, kunye nomsebenzi webhayoloji—kunye nezinto zabantu ezifana nokusetyenziswa komhlaba kunye neendlela zokulawula. Umhlaba osempilweni nosemgangathweni ophezulu sisiseko semveliso yezolimo, uzinzo lokusingqongileyo, kunye nokuphila kakuhle kwabantu. Ngeendlela zokulawula ezilumkileyo, ezinje ngokugcina izinto eziphilayo, ukuthintela ukukhukuliseka, ukulawula ukuchumisa, kunye nokukhusela ubomi bomhlaba, umgangatho womhlaba unokugcinwa kwaye uphuculwe ngokuhamba kwexesha.
