Urea fetireza yezvirimwa iyo inowanzoda kuiswa. Basa rayo guru ndere kusasiya chero zvinokuvadza muvhu, uye kushanda kwenguva refu hakuna mhedzisiro. Muindasitiri, mvura yeammonia uye kabhoni dhayokisa zvinoshandiswa sezvinhu zvakasvibirira kugadzira zvakanangaurea pasi pekupisa kwakanyanya uye kwakanyanya kumanikidza mamiriro. Pamusoro pekushandiswa seyakagadzirwa manyowa,urea inogona zvakare kushandiswa muhuwandu hwakawanda kune mamwe makemikari zvigadzirwa, mishonga, chikafu, dhayi solvents, hunyoro hwekupinza, uye viscose fiber vanowedzera, Resin yekupedzisa mumiriri, dhiziri injini pedza gasi kurapwa fluid uye zvimwe zvigadzirwa zvekugadzira.

Chenjedzo mukushandisa kwe urea:

1. Urea yakakodzera fetiraiza yepasi uye kupfeka kwepamusoro, uye dzimwe nguva sembeu fetiraiza. Inokodzera zvirimwa zvese nevhu rese. Inogona kushandiswa seyakagadzika fetiraiza uye yepamusoro kupfeka. Inogona kushandiswa mune yakaoma paddy minda. Mune ivhu realkaline kana alkaline,urea iri hydrolyzed kuburitsa ammonium nitrogen, uye pamusoro pekushandisa kunokonzeresa ammonia volatilization, saka yakadzika yekuvhara ivhu inofanira kuiswa.

2. Mushure urea inosaswa pamusoro penzvimbo yepaddy, iyo ammonia volatilization mushure mehydrolysis iri 10% -30%. Muvhu realkaline, iyo nitrogen kurasikirwa neammonia volatilization iri 12% -60%. Pasi pekupisa kwakanyanya uye kwakanyanya mwando, iyo ammonia volatilization yeurea inogona kupisa zvirimwa uye nekukurumidza iyo nitrification mwero. Naizvozvo, zvakakosha kuti ushandiseurea zvakadzama uye shandisa mvura kutakura fetereza.

3. Nekuti urea inogona kuunganidza huwandu hwakawanda hweamonium ions muvhu, ichawedzera pH ne 2-3 mayuniti. Pamusoro pe,urea iyo pachayo ine imwe huwandu hweiyo biuret. Kana kusangana kwayo kuri 500ppm, zvinokanganisa zvirimwa. Midzi uye zvinomera zvine inhibitory mhedzisiro, sakaurea hazvisi nyore kushandiswa senge fetiraiza yembeu, fetiraiza yemumunda uye feriar fetiraiza. Iyourea zvemukati mune dzimwe nguva dzekushandisa hazvifanirwe kunge zvakawandisa kana kunyanyisa kukosheswa. Mushure mekumera kwezvirimwa mbesa zvakuvadzwa ne biuret, iyo chlorophyll synthesis zvipingamupinyi zvinoumbwa, uye mashizha anozoita chlorosis, yero uye kunyange machena machena kana mitsetse.

4. Urea haigone kusanganiswa nemafuta efalali. Pashureurea inoiswa, inofanirwa kushandurwa kuita ammonium nitrogen isati yashandiswa nezvirimwa. Pasi pemamiriro ealkaline, yakawanda yenitrogen muammonium nitrogen inozove ammonia uye volatilize. Naizvozvo,urea haigone kusanganiswa nemadota echirimwa, calcium magnesium phosphate fetiraiza, kabhoni Musanganiswa kana kushandiswa panguva imwe chete kwealkaline fetereza senge ammonium.

Chii chiri mhedzisiro ye urea pakukura kwezvirimwa uye nemashandisiro ayo?

1. Basa re urea kugadzirisa huwandu hwemaruva. Mavhiki mashanu ne6 mushure mekutumbuka, pfapisa 0.5%urea mhinduro yemvura pamusoro pemashizha pamusoro pekaviri, iyo inogona kuwedzera nitrogen yemashizha, inokasira kukura kwemashizha matsva, inodzivisa kusiyanisa kwemaruva mapundu, uye kugadzira iyo Yegore ruva huwandu hwakawanda hwakakodzera.

2. Sarudza zvirimwa zvikuru. Pakushandisa, zvirimwa zvine nzvimbo yakakura yekudyara uye nepamusoro hwehupfumi (senge gorosi nechibage) zvinofanirwa kutanga zvatariswa. Kune zvirimwa zvechipiri zvakadai sebhakkwheat, unogona kushandisa zvishoma kushandira zvinoenderana neyako hupfumi mamiriro. Kana kunyangwe usashandise, uye upe mutambo uzere kune zvinoita fetereza mukuwedzera kugadzirwa. Shandisa seyakagadzika fetiraiza kana yepamusoro kupfeka.Urea yakakodzera kushandiswa seyakagadzika fetiraiza uye yepamusoro kupfeka. Kazhinji, haishandiswe semushonga wembeu.

3. Nyorera pachine nguva. Pashureurea inoiswa muvhu, inotanga kuiswa hydrolyzed muamonium bicarbonate nekuita kwehutachiona hwevhu husati hwanyudzwa nemidzi yezvirimwa. Naizvozvo, inofanirwa kuiswa pamberi. Nyoreraurea mushure memvura yakawanda sezvinobvira kuve nehunhu hwakanaka hwekunyorova kuita. Paunenge uchizora topdressing muvhu rakaoma, edza kuzvirongedza mushure mekunaya kuitira kuti fetiraiza ikurumidze kunyungudika uye kunyudzwa nevhu.
4. Kana urea inochengetwa zvisirizvo, inozotora mwando nyore nyore uye inosanganisa, izvo zvinokanganisa mhando yekutanga ye urea uye kuunza kumwe kurasikirwa kwehupfumi kuvarimi. Izvi zvinoda kuti varimi vachengeteurea nemazvo. Ive neshuwa yekuchengetedza iyourea kurongedza bhegi rakasimba usati washandisa, ribate zvine hungwaru panguva yekufambisa, dzivisa kunaya, uye chengetera munzvimbo yakaoma, ine mweya wakakwana ine tembiricha iri pasi pemadhigirii makumi maviri.

5. Kana iri yakawanda yekuchengetera, shandisa matanda mativi kukora pasi pazasi kwemasentimita makumi maviri, uye siya nzvimbo inopfuura masendimita makumi mashanu pakati pechikamu chepamusoro nedenga kuitira kufefetedza nekunyorova, uye siya mabara pakati pe matura. Kugonesa kuongorora uye kufefetedza. Kana iyourea iyo yakavhurwa muhombodo haina kushandiswa kumusoro, bhegi kuvhura rinofanira kuvharwa munguva yekufambisa kushandiswa gore rinouya.