Ammonium sulfate [(NH4) 2SO4], tseem hu ua ammonium sulfate, yog cov chiv nitrogen ntxov tshaj plaws (feem ntau hu ua chiv hmoov) tsim thiab siv hauv tsev thiab thoob ntiaj teb. Nws yog qhov tsim nyog rau cov av thiab cov qoob loo, tuaj yeem txhawb kev loj hlob ntawm cov ceg ntoo thiab nplooj, txhim kho cov txiv hmab txiv ntoo zoo thiab tawm los, txhim kho cov qoob loo tiv thaiv kev puas tsuaj, thiab tuaj yeem siv ua chiv, topdressing, thiab noob chiv. Nws yog feem ntau suav hais tias yog tus qauv nitrogen chiv nrog nitrogen cov ntsiab lus ntawm 20% mus rau 21%.
Ntshiab ammonium sulfate yog dawb crystalline khoom, nrog me ntsis daj los yog grey by-product. Nws muaj qhov nqus dej tsawg thiab tsis yooj yim rau clump, ua kom yooj yim khaws cia thiab ntau soluble hauv dej. Ammonium sulfate yog ib qho physiological acidic ceev ua nitrogen chiv uas feem ntau haum rau cov qoob loo xws li nplej, pob kws, mov, paj rwb, qos yaj ywm qab zib, hemp, txiv hmab txiv ntoo ntoo, zaub, thiab lwm yam.
Rau cov av, ammonium sulfate yog qhov tsim nyog rau cov av nruab nrab thiab alkaline, tab sis tsis yog rau cov av acidic. Cov kev siv ntawm ammonium sulfate feem ntau suav nrog cov hauv qab no:
1. Ua ib lub hauv paus chiv. Thaum ammonium sulfate yog siv los ua ib lub hauv paus chiv, nws yuav tsum tau muab sib sib zog nqus npog nrog av kom yooj yim rau cov qoob loo nqus.
2. Ua cov hnav khaub ncaws saum toj kawg nkaus. Qhov no yog txoj kev thov zoo tshaj plaws.
Txiav txim siab qhov topdressing tus nqi ntawm ammonium sulfate raws li ntau hom av. Rau cov av uas tsis muaj dej tsis zoo thiab cov chiv khaws cia, nws yuav tsum tau siv rau hauv cov theem, thiab tus nqi yuav tsum tsis txhob ntau dhau txhua zaus; Rau cov av uas muaj dej zoo thiab cov chiv khaws cia, qhov ntau npaum li cas tuaj yeem nce ntxiv txhua lub sijhawm. Tus nqi ntawm cov av noo kuj tseem muaj feem cuam tshuam rau kev siv chiv, tshwj xeeb tshaj yog nyob rau hauv cov av qhuav. Thaum thov ammonium sulfate, nws yog ib qho tsim nyog yuav tsum tau them sai sai rau dej raws sijhawm.
Raws li kev hnav khaub ncaws saum toj kawg nkaus hauv cov liaj teb, nws yog qhov yuav tsum tau ntws thiab ziab lawv ua ntej, thiab kev saib xyuas yuav tsum tau them rau kev siv ua ke nrog plowing thiab raking. Tsis tas li ntawd, kuj tseem muaj qhov sib txawv tseem ceeb hauv kev siv ammonium sulfate rau cov qoob loo sib txawv, xws li thaum siv cov txiv hmab txiv ntoo, nws tuaj yeem siv rau hauv furrows, loops, lossis qhov.
3. Zoo dua li cov noob chiv. Vim tias ammonium sulfate tsis muaj kev cuam tshuam rau cov noob germination.
Kev ceev faj yuav tsum tau them rau cov teeb meem hauv qab no thaum thov ammonium sulfate:
1. Ammonium sulfate chiv tsis tuaj yeem siv rau hauv kev sib cuag lossis sib xyaw nrog lwm cov tshuaj alkaline lossis tshuaj tiv thaiv kom tsis txhob muaj cov tshuaj txo qis.
2. Nws tsis pom zoo kom siv ammonium sulfate rau tib thaj av cultivated rau lub sijhawm ntev, txwv tsis pub cov av yuav acidic thiab tawv. Yog tias tsim nyog siv nws, ib qho tsim nyog ntawm txiv qaub lossis organic chiv tuaj yeem siv ua ke. Tab sis nws yuav tsum raug sau tseg tias ammonium sulfate thiab txiv qaub tsis tuaj yeem sib xyaw kom tiv thaiv ammonium sulfate los ntawm decomposing thiab ua rau nitrogen poob. Feem ntau, daim ntawv thov ua ke ntawm ob yuav tsum sib cais los ntawm 3-5 hnub.
3. Ammonium sulfate tsis haum rau daim ntawv thov ntawm cov av acidic.
