Yini urea: ukwakheka, izinzuzo kanye nokulimala

I-Urea yingxube yamakhemikhali esekwe nitrogen esetshenziswa embonini. Kumakhemikhali we-organic, ukwakheka kunamagama ahlukile: i-carbonic acid diamide noma i-urea. I-Urea ngumanyolo wezimbiwa osetshenziswa ebhizinisini lezolimo. Amakristalu angenamabala angenayo imibala (ane-solubility enhle emanzini) angumkhiqizo wokugcina wokuhlanganiswa kwamaprotheni. Ekhiqizweni kwezitshalo, inani le-urea kokuqukethwe kwe-nitrogen ephezulu yi-45%.

Yini urea: izinzuzo nokulimaza

Inani le-urea ngokushibhile, ukusetshenziswa kalula kanye nesivuno esihle kakhulu. Uma siqhathanisa i-urea namanye ama-fertiliser amaminerali, i-compact ayinabungozi, ngenxa yokungabikho ngokuphelele kwe-chlorine. Kusetshenzisiwe, i-urea ayikhawulwanga ku-:

 

• Ukwenza kabusha ukubuyiselwa kwenhlabathi ngemuva kobusika “ukuphumula”. Umanyolo wamaminerali usetshenziswa lapho utshala inhlabathi ekuqaleni kwentwasahlobo. I-ammonia ethe xaxa iyaphuma emoyeni ovulekile, kanti inhlabathi igcwele izakhi ezibalulekile ekuthuthukisweni kwamagciwane.
• Ukugqoka ngemifino. Isetshenziselwa kuphela ukunisela okwenziwe ngenhlabathi. I-Urea ihlanganiswa namanzi futhi ifafazwe emasimini.

 

I-Urea yi-ejorisizing, okusho ukuthi ukwakheka kwamakhemikhali okungeniswa emhlabathini kugudluza i-pH yenhlabathi iye ohlangothini lwe-acid. Abakhiqizi bamanyolo we-organic, bekhuthaza imikhiqizo yabo ebizayo, bayabheja kulokhu. Eqinisweni, lokhu akubucayi. Ukubuyisela i-pH, ngokwesibonelo, nge-limestone (alkali), kuzoxazulula inkinga yama-agrarians. Sekukonke, i-urea, i-limestone kanye nophethiloli esebenza emasimini kusazoqhubeka kubize kaningana kunokuthenga izinto eziphilayo.

 

 

Ukusetshenziswa kukamanyolo wezimbiwa kuvame ukuhlotshaniswa nokulimazeka kwezitshalo ezikhulile emzimbeni. Kepha lokhu akusebenzi ku-urea. Umuthi uhlala uhlala ungenabungozi ebantwini - ngesimo samahhala, noma kumkhiqizo wokugcina. Futhi, ngakolunye uhlangothi, izidakamizwa eziningi ze-organic ziyingozi kune-urea.

 

 

Njengoba esezwisisile ukuthi u-urea uyini, lo osebenza ngezolimo nakanjani uzofinyelela iziphetho futhi azenzele isinqumo. Ngemuva kwakho konke lokho, isikhangiso esigcwaliswe ngokuphelele kumaphephabhuku komagazini bezolimo nakwezemithombo yezindaba sihlose "ukudonsa" umuthi odumile. Akusizi ngalutho ukuthi abathengisi bemanyolo ababizayo babe nabantu basebenzise umanyolo ongabizi. Ngakho-ke amakhulu wokubuyekezwa okungathandeki nge-urea.

 

 

Ngokuvamile, i-urea yisisombululo esifanele ingadi, ingadi yasekhishini, ibhizinisi. Noma yiziphi izidingo zezolimo. Gcina umbhalo walokho ukwakheka kwenhlabathi (pH) futhi ubale kahle umthamo (njengoba kukhonjiswe abakhiqizi kwephakheji). Futhi, ngendlela, ungahlanganisi i-urea nembewu yezilimo lapho uhlwanyela - ngaphandle kwalokho isitshalo sizokufa ihlumela (liphume).