Pakalipano, n'zovuta kulingalira kulima munda, munda ndi maluwa popanda feteleza. Carbamide (urea) - gulu lokhala ndi nayitrojeni mumapangidwe ake, ndi granule yoyera, imvi kapena yachikasu pang'ono. Posachedwapa, feteleza ingagulidwe ngati mapiritsi, chifukwa chophimba nthawi yaitali, ikafika pansi, imatha pang'onopang'ono, yomwe imathetsa nitrate yambiri ya mbeu ndi nthaka. Urea ndizomwe zimayambitsa nayitrojeni feteleza, pamene zimasakanizidwa ndi nthaka, zimasinthidwa mothandizidwa ndi dothi la tizilombo mu carbonate ya ammonium.
Mu kukula ndi kukula kwa zomera, nayitrojeni ndi yofunika kwambiri, chifukwa ikugwirizana kwambiri ndi zomangamanga ndi gawo la mapuloteni. Zokondweretsa zomwe zimayambitsa kukula kwa zipatso zimapangitsa kudya carbamide kupeza zokolola zazing'ono m'madera aang'ono.
Njira yogwiritsira ntchito urea
Mu mlengalenga, ammonium carbonate imatha mofulumira, kotero kugwiritsira ntchito urea sikungathandize. Akatswiri odziwa zaulimi, poyankha funso la momwe mungagwiritsire ntchito urea, perekani yankho losafunika: feteleza ziyenera kugwiritsidwa ntchito mmalo otetezedwa ndi nthaka. Mavitrogeni pazomwe akuyenera kuchitapo kanthu ayenera kumangidwanso pang'onopang'ono kuti asatayikire kuwonongeka kwa gaseous ammonia.
Miyambo yowonjezera urea
Ndikofunika kuti alimi amamera azidziwa momwe carbamide imagwiritsira ntchito m'munda. Feteleza ndiponseponse, imatha kugwiritsidwa ntchito popangira zovala zonse ndi nyengo yaitali. Musanabzala mbewu za maluwa ndi mabulosi, granules amalowa m'nthaka: 5 - 12 g ya feteleza pa 1 mamita. Pamwamba pa kuvala kwa zomera 20 - 30 g ya carbamide imadzipiritsika mu 10 malita a madzi. Pansi pa mtengo wokhala ndi carbamide, korona imayambira pansi pambali yonseyi. Pafupifupi 200 g ya urea amagwiritsidwa ntchito pansi pa mtengo wa apulo, ndi 120 magalamu a chitumbuwa ndi maula.
Chofunika: carbamide amachulukitsa dothi, kotero, kuti asamalire asidi, limatonthozedwa: 800 g ya miyala yachitsulo ya pansi pa 1000 g ya urea.
Foliar kuvala ndi carbamide
Pa zizindikiro za njala ya nitrogen ya zomera, komanso ngati muthetsa zipatso ndi zipatso, perekani madiresi apamwamba popopera mankhwala ndi carbamide kuchokera kumapiritsi apadera. Pamaso pa ammonium nitrate, omwe amagwiritsidwa ntchito mofanana, urea ali ndi mwayi wapatali - umatentha pang'ono masamba. Pakati-muzu wa feteleza ndi carbamide pa nyengo yokula ikuchitika pa mlingo wa malita 3 a njira yothetsera pa 100 m². Njira yothetsera zamasamba ikukonzedwa motere: 50 - 60 g ya carbamide pa ndowa 10-lita imodzi ya madzi. Pakuti mbewu ndi zipatso za mabulosi, njira yothetsera ikukonzekera pa mlingo wa 20-30 g pa ndowa.
Urea ndi njira yotetezera zomera
Carbamide amagwiritsidwa ntchito ngati njira zowonetsera tizirombo. Kumayambiriro kwa kutentha kwa kasupe masiku asanayambike kutupa
Kuteteza zomera ku nkhanambo, wofiirira malo ndi matenda ena opatsirana, kupopera mbewu mankhwalawa kumachitika mu nthawi yoyamba ya kugwa masamba, mu autumn. Zipatso za mitengo yobala zipatso ndi mabulosi akukonzedwa, komanso masamba ogwa. Njira yothetsera vutoli ndi yofanana ndi kuwonongeka kwa tizilombo towononga.
Ntchito yoyenera ya urea idzakuthandizani kuti mupeze zokolola zochuluka!