Indima Yesayensi Yezinto Eziphilayo Ekuthuthukisweni Kwezolimo Ezisimeme
Ukulima okusimeme kuvame ukuxoxwa ngakho ngokwesimo sikamanyolo wezinto eziphilayo, ukusebenza kahle kwamanzi, ukujikeleziswa kwezitshalo, kanye nokuphathwa kwezinambuzane okuhlanganisiwe. Kodwa-ke, kunesisekelo esivame ukunganakwa: i-geology. I-Geology—ucwaningo lwezinto ezisetshenziswa emhlabeni, izinqubo ezizakhayo, kanye nokuguquguquka koqweqwe lomhlaba—kudlala indima enkulu ekunqumeni ikhwalithi yomhlaba , ukutholakala kwamanzi, ingozi yezinhlekelele, kanye nokukhetha okulungile kwezimpahla zesifunda. Ngokuqonda i-geology, imikhuba yezolimo ingaklanywa ukuze ivumelane nezimo, ikhiqize, futhi igcine impilo yemvelo yesikhathi eside.
1. I-Geology “njengomsuka” womhlaba wezolimo
Inhlabathi ayiveli nje kuphela; ingumphumela wokuguquka kwedwala elingumzali, okuthonywe yisimo sezulu, izinto eziphilayo, ukuma kwendawo, nesikhathi. Uhlobo lwedwala elingumzali luthonya kakhulu ukuthungwa, okuqukethwe kwamaminerali, kanye nokuvunda kwenhlabathi. Isibonelo, amadwala ezintaba-mlilo njenge-andesite ne-basalt ngokuvamile awela enhlabathini evundile ngoba acebile ngamaminerali afana ne-calcium, i-magnesium, ne-potassium. Akumangalisi ukuthi izikhungo eziningi zezolimo zitholakala emithambekeni yezintaba-mlilo, yize lezi zindawo nazo zibeka engcupheni yezinhlekelele.
Ngokuphambene nalokho, inhlabathi eyakhiwe ngetshe lesihlabathi noma i-quartz ivame ukuba mpofu kwezakhamzimba ezithile futhi inamandla aphansi okubamba amanzi. Ngokwesimo sezolimo ezisimeme, ukuhlonza idwala elingumzali kusiza abalimi nabahleli bomhlaba ukuthi bakhe amasu afanele okufaka umanyolo: hhayi nje ukwengeza okokufaka, kodwa ukubhekana nokuntuleka kwenhlabathi ethile ngaphandle kokwenza ngokweqile.
2. I-Mineralogy kanye nokutholakala kwezakhamzimba
I-Geology ihlobene kakhulu ne-mineralogy, okungukuthi izinhlobo zamaminerali atholakala enhlabathini. Izakhamzimba ezibalulekile zezitshalo—njenge-phosphorus (P), i-potassium (K), i-calcium (Ca), i-magnesium (Mg), kanye nezinto ezincane ezifana ne-zinc (Zn) ne-boron (B)—zitholakala kakhulu kumaminerali atholakala ekushiseni kwamadwala.
Kwezolimo ezisimeme, ukuqonda i-mineralology kungaqondisa ukuphathwa kwezakhamzimba endaweni ethile. Isibonelo, inhlabathi ezindaweni ze-limestone (karst) ingaba ne-calcium eningi kodwa ingabi ne-phosphorus ngoba i-phosphorus iboshelwa kalula futhi kunzima ukuthi izitshalo ziyifinyelele. Ngakho-ke, isu elifanele akulona njalo ukwandisa imithamo kamanyolo, kodwa kunalokho ukulungisa i-pH, ukwengeza izinto eziphilayo, noma ukukhetha izinhlobo zikamanyolo nezindlela zokusebenzisa ezandisa ukutholakala kwe-phosphorus.
Le ndlela inganciphisa imfucuza kamanyolo wamakhemikhali, inciphise izindleko zokukhiqiza, futhi inciphise ukungcola kwamanzi ngenxa yokugeleza kwezakhamzimba okubangela ukugcwala kwamanzi emifuleni nasemachibini.
3. I-Geology kanye nezinhlelo zamanzi: isisekelo sokunisela okusimeme
Amanzi ayinhliziyo yezolimo. Isayensi ye-geology inquma ukuthi amanzi agcinwa kanjani futhi ageleza kanjani ngaphansi komhlaba ngokusebenzisa ama-aquifer. Ezindaweni ezine-aquifers ezikhiqizayo—isibonelo, izinsalela zesihlabathi namatshe ayigugu (amanzi agelezayo) ezindaweni ezigcwele izikhukhula—amanzi angaphansi komhlaba kulula ukuwathola nokuwafinyelela. Ezindaweni zamadwala aqinile njenge-granite noma amadwala aguqukile, amanzi angaphansi komhlaba ngokuvamile agcinwa emaqakaleni; ukutholakala kwawo akungalingani kakhulu, futhi imithombo ingoma ngokushesha uma isetshenziswa ngokweqile.
Ukulima okusimeme kudinga ukuphathwa kwamanzi okungadluli umthamo wokugcwalisa kabusha we-aquifer. Izifundo ze-geological kanye ne-hydrogeological zisiza ekuhloleni amandla okusebenzisa amanzi angaphansi komhlaba, ukunquma izindawo zemithombo ezisebenzayo, ukulinganisa ukukhishwa okuphephile, kanye nokuklama izindawo zokungena kwamanzi. Kwezinye izindawo, ukongiwa kwamanzi kungafezwa ngokwakha amachibi kanye nemithombo yokungena emanzini evumelana ne-lithology yendawo kanye nezakhiwo ze-geological ukuze amanzi emvula angachithwa ngqo njengokugeleza kwamanzi.
Ngaphezu kobuningi, i-geology nayo ithinta ikhwalithi yamanzi. Amanzi angaphansi komhlaba ezindaweni ezithile angaqukatha amazinga aphezulu ensimbi, i-manganese, noma ngisho nezinto eziyingozi njenge-arsenic. Ukuhlaziywa kwe-geology yemvelo kusiza ekuboneni izingozi zekhwalithi yamanzi, okuqinisekisa ukuphepha kokunisela nokusetshenziswa kwekhaya.
4. Ukunciphisa izinhlekelele ze-geological ukuze kuqinisekiswe ukuphepha kokudla
Ezolimo zisengozini enkulu yezinhlekelele zemvelo ezifana nokuqhuma kwezintaba-mlilo, ukuzamazama komhlaba , ukuchitheka kwamanzi, ukudilika komhlaba, kanye nezikhukhula ezisheshayo. Ngombono wezemvelo, lezi zingozi zingahlelwa futhi zilawulwe.
Ezindaweni ezivame ukuba nemithambeka emide kanye nokudilika komhlaba, ezolimo eziqhubekayo zidinga okungaphezu nje kokutshala; zidinga ukuphathwa kahle kwemithambeka, njengokufaka amasimu, ukutshala izitshalo zokumboza, ukulima amahlathi, kanye nokuphatha amanzi angcolile. Ulwazi ngesakhiwo samatshe, uhlobo lomhlabathi, kanye namaphethini okuqhekeka lunquma ukuthi yiziphi izindawo eziphephile ukutshalwa nokuthi yiziphi okufanele zibizwe njengezindawo ezivikelwe.
Ezindaweni ezizungeze izintaba-mlilo, umlotha wezintaba-mlilo ungacebisa inhlabathi ngokuhamba kwesikhathi, kodwa ukuqhuma kungaqeda izitshalo zingakapheli amahora. Ngakho-ke, amamephu ezingozi zezintaba-mlilo kanye nezinhlelo zesimo esiphuthumayo—njengomshwalense wezolimo, ukuhlukahluka kwezitshalo, kanye nokunquma amakhalenda okutshala ngokusekelwe emisebenzini yezintaba-mlilo engaba khona—kubalulekile ekuthuthukiseni ezolimo eziqinile.
5. I-Geomorphology: izimo zomhlaba zinquma amasu okulima
I-geomorphology ihlola ukuma kobuso boMhlaba kanye nezinqubo eziwubumbayo. Amathafa agcwele amanzi ngokuvamile afanelekela amasimu erayisi ngenxa yokutholakala kwawo kwamanzi kanye nenhlabathi yobumba egcina amanzi. Amagquma agcwele amanzi avame ukufaneleka ekulimeni izitshalo noma emasimini athile, kodwa adinga izinyathelo zokulondolozwa kwenhlabathi.
Ukuqonda i-geomorphology kuvumela ukukhethwa kwezimpahla okufanele kakhulu. Lokhu kuhambisana nezimiso zezolimo eziqhubekayo: ukutshala ngaphakathi kwamandla omhlaba, kunokuphoqelela umhlaba ngezinjongo ezingalimaza. Ukusetshenziswa kabi kwezindawo, njengokuhlanza umhlaba othambekele ngaphandle kokulondolozwa, kuvame ukuholela ekugugulekeni komhlaba, ukwehla kokuvunda, ukugcwala komfula, kanye nokulimala kwengqalasizinda yokunisela.
6. Ukuguguleka komhlabathi, ukubola kwenhlabathi, kanye nokulondolozwa komhlabathi okusekelwe ku-geology
Ukuguguleka komhlabathi kungenye yezitha ezinkulu zokusimama kwezolimo ngoba kususa inhlabathi engaphezulu, ungqimba olucebile ngezinto eziphilayo kanye nezakhamzimba. Izinga lokuguguleka komhlabathi lithonywa ukuthambekela kwemithambeka, ukuqina kwemvula, ukumbozwa kwezitshalo, kanye nezici ze-geological ezifana nokuthungwa komhlabathi kanye nezinga lokuguguleka kwamadwala.
Enhlabathini enesihlabathi, ukuguguleka komoya kungaba yinkinga. Emathafeni anobumba, ukugeleza kwamanzi ebusweni kuthwala kalula izinhlayiya ezincane. Amasu okulondoloza—ukufaka umquba, imibundu, ama-terrace, ukugcina izitshalo, ngisho nokutshala—asebenza kangcono uma ehambisana nezici zomhlabathi kanye nedwala elingumzali. Ngakho-ke, i-geology iyasiza ekunciphiseni ukulahlekelwa komkhiqizo womhlaba futhi igcina ikhwalithi yamanzi kusukela ekungcoleni komhlaba.
7. Izinsiza ze-Geological zezinsiza zezolimo ezinobungani nemvelo
Ezinye izinto ezifakwa kwezolimo zivela ezintweni ezisetshenziswayo ze-geological, njengedwala le-phosphate lokufaka umanyolo we-phosphorus, i-potassium evela kwezinye izinto ezifakiwe, kanye ne-lime yezolimo (i-calcite/dolomite) yokutshala inhlabathi ene-asidi. Ngaphakathi kohlaka oluzinzile, lezi zinsiza kumele zisetshenziswe ngokuhlakanipha: ngokunciphisa ukuthembela ezintweni ezifakwayo ngokweqile, ukubeka phambili ukusebenza kahle komanyolo, kanye nokucabangela imiphumela yokumba.
Ngakolunye uhlangothi, kunamathuba okusebenzisa izinto zasendaweni, ezisekelwe ku-geologiya—isibonelo, i-dolomite ukukhulisa i-pH nokwengeza i-magnesium—okunganciphisa izindleko zokuhamba kanye nomphumela wekhabhoni uma kuqhathaniswa nezinto ezingeniswa kwamanye amazwe. Kodwa-ke, konke lokhu kusadinga ukuhlaziywa kokufaneleka ukuze kugwenywe imiphumela emibi njengokwanda kosawoti noma ukungalingani kwezakhamzimba.
8. Ingqalasizinda yezolimo esekelwe endaweni kanye nokuhlela indawo
Imisele yokunisela, amadamu amancane, imigwaqo yasemapulazini, ngisho nezindawo zokugcina isivuno zithinteka yizimo zejoloji. Inhlabathi ethambile, evame ukucwila idinga ukwakheka kwesisekelo okuhlukile kunedwala eliqinile. Izindawo ezivame ukuba nezikhukhula noma imifantu esebenzayo kufanele zigwenywe ngenxa yengqalasizinda ebalulekile.
Ukuhlela indawo yezolimo okuhlanganisa idatha yejiyoloji—amamephu amatshe, izakhiwo, ama-aquifer, izingozi zokudilika komhlaba, kanye nokusetshenziswa komhlaba—kusiza ukuqinisekisa ukuthi ukutshalwa kwezimali kwezolimo akuhlali isikhathi esifushane ngenxa yokungabekwa kahle. Lokhu kubaluleke kakhulu enkathini yokushintsha kwesimo sezulu, lapho imvula enkulu yandisa khona ingozi yokudilika komhlaba kanye nezikhukhula.
Isiphetho
Indima ye-geology kwezolimo ezisimeme iyisisekelo: ukunquma izici zenhlabathi namaminerali, ukulawula ukutholakala kwamanzi kanye nekhwalithi, ukusiza ekunciphiseni izinhlekelele, ukuqondisa ukulondolozwa komhlaba, kanye nokusekela ukuhlela indawo kanye nengqalasizinda. Ezolimo ezisimeme ngempela zihilela okungaphezu nje kwemikhuba yangaphandle; kuhilela nokuqonda "indaba" engaphansi kwezinyawo zethu—amadwala, izakhiwo, kanye nezinqubo ezakha indawo.
Ngokuhlanganisa i-geology, izinqumo zezolimo ziba ngezolwazi kakhulu futhi zisekelwe endaweni: okokufaka kusebenza kahle kakhulu, umkhiqizo uzinzile, futhi imiphumela yemvelo iyancishiswa. Ekugcineni, i-geology akuyona nje isayensi yesikhathi esidlule soMhlaba, kodwa isihluthulelo sokuklama ikusasa lokudla eliphephile neliqhubekayo.
