Njengoba i-urea BAI ingumanyolo we-nitrogen ophilayo, ayikwazi ukumunwa ngqo futhi isetshenziswe izitshalo ngemuva kokufakwa enhlabathini ye-DU. Ingamuncwa futhi isetshenziswe kuphela yizitshalo ngemuva kokubola zibe yi-ammonium bicarbonate ngaphansi kwesenzo se-DAO sezinambuzane ezincane zenhlabathi. Izinga lokuguqulwa kwe-urea emhlabathini lihlobene nokushisa, umswakama nokuthungwa kwenhlabathi.

Ngokuvamile, entwasahlobo nasekwindla, ukubola kufinyelela inani eliphakeme cishe isonto elilodwa, kuthi ehlobo kuhlale cishe izinsuku ezintathu. Ngakho-ke, lapho i-urea isetshenziswa njenge-topdressing, kufanele kubhekwe ukuthi isebenzise i-urea ezinsukwini ezimbalwa ngaphambili.

I-Urea ingeyomanyolo ongathathi hlangothi, osebenza kuzo zonke izinhlobo zezitshalo nomhlabathi, ungasetshenziswa njengomanyolo oyisisekelo nokugqokwa ngokweqile, kepha hhayi ukutshala umanyolo kanye nensimu yelayisi ngomanyolo. Ngoba i-urea iqukethe okuqukethwe kwe-nitrogen ephezulu nenani elincane le-biuret, kuzothinta ukuhluma kwembewu nokukhula kwezimpande zezithombo.

Uma i-urea kufanele isetshenziswe njengomanyolo wembewu, kuyadingeka ukuthi ulawule ngokuqinile inani likamanyolo futhi ugweme ukuxhumana nembewu. Kumanyolo wesisekelo wama-225 ~ 300 kg ngehektha ngalinye nakumanyolo ongaphezulu ongama-90 ~ 200 kg ngehektha ngalinye, inhlabathi kufanele isetshenziswe ngokujulile ukuvimbela ukulahleka kwe-nitrogen. I-Urea ifaneleka kakhulu ekusetshenzisweni kukamanyolo weqabunga, ayinazo izingxenye eziseceleni, kulula ukumuncwa ngamaqabunga ezitshalo, umphumela womanyolo uyashesha, ukuhlushwa kwesihlahla sezithelo kungu-0.5% ~ 1.0%, ekuseni noma kusihlwa kufafaza umfaniswano emaqabunga esitshalo , esikhathini sokukhula noma phakathi nendawo nasekupheleni kwesikhathi, njalo ezinsukwini eziyi-7 ~ 10 kanye, fafaza ama-2 ~ amahlandla ama-3. I-Urea ingahlakazwa nge-potassium dihydrogen phosphate, i-ammonium phosphate kanye nezinambuzane, ama-fungicides, ukufafaza ndawonye, ​​ingadlala indima yokufaka umanyolo, ukubulala izinambuzane, ukuvimbela izifo.