Gardeners feem ntau pub ntau nroj tsuag los tsim ntau cov qoob loo. Ua li no, koj tuaj yeem siv tshuaj, tab sis, tom qab ntawd, tag nrho cov nitrates yog ces nyob rau hauv cov txiv hmab txiv ntoo. Nws yog kev ruaj ntseg, tab sis tsis muaj tsawg siv, siv ntau dua tej chiv, piv txwv li urea los yog carbamide .
Nyob rau hauv no tsab xov xwm, koj yuav kawm txog qhov muaj pes tsawg leeg ntawm urea, thiab rau cov nroj tsuag uas nws daim ntawv thov ua chiv zoo.
Yuav ua li cas yog fertilizer urea muaj?
Urea yog feem ntau cov concentrated nitrogen fertilizer. Qhov kev faib ua feem ntawm cov tshuaj no yog li ntawm 46% thiab nws yog nyob rau hauv daim ntawv amide, uas yog absorbed sai dua nyob rau hauv cov nroj tsuag thiab taug kev los ntawm qhov fawm kib.
Lub hauv paus ntawm urea
Tom qab tau txais qhov no fertilizer rau hauv av, nyob rau hauv qhov kev txiav txim ntawm cov enzymes, uas yog tsim los ntawm cov kab mob nyob hauv lub ntiaj teb, urea hloov mus rau hauv ammonium carbonate. Nyob rau cov cheeb tsam uas muaj kev ua kom muaj roj ntsha siab, qhov kev hloov ntawm no yuav siv sijhawm 2-3 hnub.
Urea yog muag raws li dej-soluble dawb granules tias ncuav mog qab zib tom qab lub sij hawm sau. Nws tuaj yeem siv rau cov av los yog kev daws teeb meem.
Yuav ua li cas yug fertilizer urea?
Urea yuav siv tau rau ntau hom kev pub, tsuas yog cov proportions ntawm dilution ntawm ib tug qhuav npaj nyob rau hauv 10 liv dej yuav txawv:
- rau hauv paus - 50-70 g;
- rau foliar nroj - 100 g.
Tab sis rau zaub cov qoob loo, txiv hmab txiv ntoo ntoo thiab bushes, txawv nqi ntawm daim ntawv thov ntawm no fertilizer nyob rau hauv daim ntawv qhuav.
Yuav ua li cas siv urea raws li ib tug fertilizer?
Qhov kev pom zoo rau kev siv ntawm urea rau zaub cov qoob loo yog cov tshuaj raws li nram no (raws li 1 m2 ntawm thaj av):
- ua ntej cog - txog li 12 g;
- nyob rau hauv lub sij hawm ntawm active kev loj hlob - txog li 10 g;
- ua ntej flowering - nyob rau hauv daim ntawv ntawm ib tug daws, npaj nyob rau hauv proportions ntawm 50-60 g ib 10 liv dej.
Rau cov ntoo thiab shrubs, ob qho tib si ornamental thiab txiv hmab txiv ntoo-Berry:
- nyob rau hauv lub sij hawm ntawm txoj kev loj hlob - 15-20 g;
- tom qab flowering (tom qab 5-6 hnub) thiab tom qab 30 hnub - nrog ib tug daws ntawm 20-30 g ib 10 liv dej.
Tsis txhob hnov qab tias kev pub mov ntawm raspberries, txiv lws suav nrog no fertilizer tsuas yuav pab tau.
Yog hais tias koj coj urea, scattering nws nyob rau hauv nroj tsuag los yog sealing rau hauv lub qhov thaum cog nrog lawv, nco ntsoov ncuav zoo tom qab.
Kuv yuav tsum saib dab tsi thaum siv tshuaj?
Yog tias koj xav tau kev siv cov urea kom muaj qhov siab tshaj plaws, cov hauv qab no yuav tsum raug xam tias:
- Qhov no fertilizer tsis pom zoo kom muab tov nrog txiv qaub ntsuab, chalk, dolomite thiab yooj yim superphosphates, txij thaum qhov kev twb kev txuas lawv cov kev ua no yog neutralized, yog li yuav tsis muaj cov nyhuv.
- Thaum lub sij hawm nws siv, av acidification tshwm sim, yog li ntawd, thiaj li kom tsis txhob xws li ib tug tsis zoo zoo ntawm fertilizer, concomitant nrog nws, limestone yuav tsum tau ntxiv ntawm ib tus nqi ntawm 1 kg ntawm urea mus rau 800 g ntawm crushed limestone.
- Ammonium carbonate, tau los ntawm kev lwj siab ntawm qhov dej tshuaj, thaum decomposed nrog oxygen decomposes, thiab qhov uas yog qhov uas ua gaseous, yog tsuas yog poob, uas txo cov theem ntawm kev siv ntawm kev siv. Qhov no tshwm sim thaum noog urea nkag rau hauv av qhib tsis tau nyob hauv cov av. Nws kuj yuav tsum tau coj mus rau hauv tus account tias alkaline thiab nruab nrab xau poob ntawm ib qho tseem ceeb ntawm cov tshuaj keeb yog ntau tshaj qhov tas;
- Vim yog qhov tseeb tias urea yog zoo dua lwm cov chiv hauv cov av thiab yog maj mam ntxuav ntawm nws los ntawm kev los nag, nws raug nquahu kom siv nws hauv cov cheeb tsam uas siv dej los yog cov dej noo ntau heev.