Popeza urea BAI ndi feteleza wa nayitrogeni, sichingathe kulowetsedwa ndikugwiritsidwa ntchito ndi mbeu zikaikidwa m'nthaka ya DU. Itha kuyamwa ndikugwiritsidwanso ntchito ndi mbewuyo itawola kukhala bicarbonate ya ammonium motsogozedwa ndi DAO yazomera zazing'ono zanthaka. Kutembenuka kwa urea m'nthaka kumakhudzana ndi kutentha, chinyezi komanso kapangidwe ka nthaka.

Mwambiri, mchaka ndi nthawi yophukira, kuwonongeka kumafika pachimake mozungulira sabata limodzi, ndipo nthawi yotentha imakhala pafupifupi masiku atatu. Chifukwa chake, urea ikagwiritsidwa ntchito ngati topdressing, iyenera kuganiziridwa kuti imagwiritsa ntchito urea masiku angapo pasadakhale.

Urea ndi wa feteleza wosalowerera ndale, wogwiritsidwa ntchito ku mitundu yonse ya mbewu ndi nthaka, itha kugwiritsidwa ntchito ngati feteleza woyambira ndi kukongoletsa, koma osabzala feteleza ndi munda wa mpunga ndi feteleza. Chifukwa urea imakhala ndi nayitrogeni wambiri komanso biuret yaying'ono, imakhudza kumera kwa mbewu ndi mmera wa mizu.

Ngati urea iyenera kugwiritsidwa ntchito ngati feteleza wa mbewu, ndikofunikira kuwongolera kuchuluka kwa fetereza ndikupewa kulumikizana ndi njere. Pa feteleza wapansi wa 225 ~ 300 kg pa hekitala komanso kwa feteleza wapamwamba wa 90 ~ 200 kg pa hekitala, nthaka iyenera kugwiritsidwa ntchito mozama kuti iteteze nayitrogeni. Urea ndiye woyenera kwambiri kugwiritsira ntchito feteleza wa masamba, mulibe mbali zammbali, zosavuta kusakanizidwa ndi masamba a mbewu, zotsatira za feteleza ndizothamanga, kupopera mitengo yamitengo yazipatso ndi 0,5% ~ 1.0%, m'mawa kapena madzulo yunifolomu yopopera masamba a mbewu , munthawi yakukula kapena pakatikati komanso mochedwa, masiku 7 ~ 10 onse kamodzi, perekani nthawi 2 ~ 3. Urea ikhoza kusungunuka ndi potaziyamu dihydrogen phosphate, ammonium phosphate ndi tizirombo, fungicides, kupopera mbewu limodzi, imatha kugwira ntchito ngati umuna, mankhwala ophera tizilombo, kupewa matenda.