Kev tshawb fawb polysulphate los ntawm Dr. Carl Rosen qhia tau hais tias muaj kev nce ntxiv hauv tag nrho THIAB kev lag luam tawm los thaum piv rau cov qauv cog qoob loo.

Txawm hais tias nws lub luag haujlwm tseem ceeb hauv kev ua qoob loo zoo, leej faj tsis tau txais kev saib xyuas nws tsim nyog, feem ntau cuam tshuam los ntawm cov neeg nyiam tshaj thiab paub zoo tawm los txhawb cov as-ham, nitrogen, phosphorus, thiab potassium. Tau ntau xyoo, sulfur deficiency tsis yog ib qho kev txhawj xeeb tshaj plaws rau feem ntau cov qos yaj ywm cog. Yav dhau los, mineralized organic teeb meem thiab siab sulfur emissions muab ntau tshaj txaus kom tau raws li cov qoob loo xav tau. Tshaj li 30 xyoo dhau los, nrog rau kev qhia txog Txoj Cai Huv Huv Huv, cov pa roj carbon monoxide emissions tau txo qis atmospheric sulfur nyob rau hauv North America. Qhov tseeb yog, nrog rau N, P, thiab K, leej faj yog cov khoom noj muaj zog, thiab txwv tsis pub cov qoob loo tawm los thiab zoo. Yog li, qhov twg yog qhov uas tawm hnub no tus neeg cog qoob loo?
Sulfur tuaj yeem muaj kev cuam tshuam loj rau ob leeg tuber zoo thiab ntau. Txawm hais tias cov qos yaj ywm tsis tshua muaj leej faj xav tau piv rau oilseeds lossis brassicas, peb txoj kev nkag siab ntawm av fertility tau hloov zuj zus, nrog rau peb txoj kev nkag siab ntawm vim li cas sulfur tuaj yeem cuam tshuam ROI.
Puas yog Sulfur Matter rau Qos yaj ywm?
Sulfur yog ib qho tseem ceeb hauv tsev thaiv rau cov proteins. Yuav tsum tau rau cov amino acid synthesis thiab tsim nyog rau high nitrogen siv efficiency, leej faj yuav cuam tshuam tuber txoj kev loj hlob, carbohydrate tiam, kab mob, thiab chlorophyll ntau lawm. Kev tshawb fawb qhia tias lub ntiajteb txawj nqus, qhuav teeb meem, qab zib thiab hmoov txhuv nplej siab, thiab tuber loj yog tag nrho cov cuam tshuam los ntawm leej faj.

Txij li thaum muaj leej faj tsis txaus, nyob rau txhua theem, tuaj yeem ua rau txo qis yields, cov khoom noj tsis tu ncua ntawm cov sulfur - txij thaum pib mus txog rau kev loj hlob - yog xav tau rau cov qoob loo noj qab haus huv thiab muaj txiaj ntsig. Nws yog ib qho tseem ceeb rau cov qoob loo kom nkag tau cov sulfur uas lawv xav tau, thaum lawv xav tau ntau tshaj.
Polysulphate (0-0-14-19.2S-12.2Ca-3.6Mg) yog muab los ntawm polyhalite (ib qho ntxhia tshwm sim los ntawm ICL). Qhov no ntau cov zaub mov chiv yog ib qho tsawg-chloride sulfate-raws li qhov chaw ntawm soluble poov tshuaj, magnesium thiab calcium.
Lub sijhawm ntev-tso cov yam ntxwv ntawm Polysulphate txhais tau hais tias plaub yam khoom noj tseem ceeb (S 19.2%, K 14%, Mg 3.6%, Ca 12.2%) muaj nyob rau hauv txhua granule yuav muaj rau cov qos yaj ywm thaum lub sij hawm xav tau, los ntawm vegetative loj hlob mus rau tuber maturation-ua lub luag haujlwm tseem ceeb hauv kev tawm los thiab zoo.
Calcium nyob rau hauv fertilizer cuam tshuam cov av chemistry nrog rau qos tuber zoo cwj pwm. Hauv cov av hom lossis hauv cov dej cog qoob loo uas cov dej zoo tuaj yeem ua rau muaj kev sib tw, ntxiv calcium rau hauv av tuaj yeem pab kho cov ntsev ntau ntxiv. Nrog rau cov tshuaj chloride tsawg heev, qis salinity Performance index, nruab nrab pH, thiab tsis muaj liming nyhuv, kev tshawb fawb tau ua pov thawj tshwm sim nyob rau hauv ntau hom av, ua Polysulphate ib tug saj zawg zog qoob loo cov zaub mov tov. Siv raws li cov nroj tsuag ua ntej, thaum cog los yog thaum lub caij hilling, Polysulphate kuj tuaj yeem muab sib xyaw nrog SOP lossis MOP rau ib qho ntxiv ntawm kev tso tawm sai K. Peb pom zoo tham nrog koj tus kws kho tsiaj lossis kev sab laj nrog ib tus neeg hauv peb pab neeg kom paub ntau ntxiv txog daim ntawv thov cov nqi thiab cov kev coj ua zoo tshaj plaws.
Raws li ib feem ntawm cov tshuaj sulfur ruaj khov uas txo cov khoom siv thiab ua kom ROI, Polysulphate yog ib qho kev xaiv tshiab rau cov neeg cog qoob loo niaj hnub no. ICL txaus siab muab Polysulphate rau kev loj hlob network ntawm cov neeg muag khoom thiab cov khw muag khoom ua ib feem ntawm lawv cov khoom noj khoom haus cog qoob loo (ntxiv rau: icl-sf.com/us-en ).
Muaj peb yam tseem ceeb ntawm sulfur fertilizer.
- Sulphur-sulphate chiv muaj sulfur ua ke nrog lwm cov as-ham, xws li nitrogen los yog poov tshuaj. Fertilizer yog npaj txhij rau cog qoob loo thiab sulphate-sulphur chiv yaj sai sai. Feem ntau cov sulphate-sulphur chiv muag hauv Saskatchewan yog granular ammonium sulphate (20-0-0-24, 21-0-0-24, 19-2-0-22).
- Ammonium sulfate tuaj yeem sib xyaw nrog lwm cov chiv, tab sis kev saib xyuas yuav tsum tau ua kom ntseeg tau tias lub cev ntawm ammonium sulphate yuav tso cai rau kev sib xyaw kom zoo.
- Cov poov tshuaj sulphate (0-0-50-18 thiab lwm yam formulations) kuj muaj thiab zoo haum rau legume qoob loo xws li alfalfa, qhov twg ob qho tib si poov tshuaj thiab sulfur yog xav tau tab sis tsis nitrogen.
muaj lwm yam khoom siv chiv muaj ib co sulphate-sulphur, nyob rau hauv ib tug blend los yog nyob rau hauv ib tug tsim khoom.
Elemental sulfur tsis zoo tam sim ntawd rau cov av uas tsis muaj sulfur, tab sis tej zaum yuav yog ib feem tseem ceeb ntawm kev tswj xyuas cov sulfur mus sij hawm ntev rau cov av qis hauv cov nroj tsuag uas muaj sulfur.
- Elemental sulfur chiv (0-0-0-90 mus rau 99) yog granular, nrog 90 mus rau 99 feem pua sulfus nyob rau hauv daim ntawv elemental. Elemental sulfur tsis tuaj yeem siv ncaj qha los ntawm cov nroj tsuag. Nws yuav tsum xub hloov mus rau sulfate-sulphur (SO4-2 -S) los ntawm cov kab mob hauv av.
Cov chiv uas muaj sulfur li thiosulphate, xws li kua ammonium thiosulphate (12-0-0-26) thiab 15-0-0-20 kuj yuav tsum tau oxidized los ntawm microbes nyob rau hauv cov av mus rau hauv daim ntawv sulphate. Txawm li cas los xij, oxidation yog nrawm thiab pom zoo cov nqi ntawm ammonium thiosulphate tuaj yeem siv rau xyoo sulphate-sulphur yuav tsum tau. Fertilizer yuav siv tau ua ntej, thaum lub sij hawm los yog tom qab germination. Txawm li cas los xij, thaum siv foliar lossis dribble band rau cov qoob loo, kev sib cuag ncaj qha nrog cov nplooj ntoo tuaj yeem ua rau nplooj scorching. Ua raws li cov tuam ntxhab cov lus qhia rau kev sib tov.
Tsiaj quav tuaj yeem muab cov sulfur nrog rau lwm cov nroj tsuag cov as-ham, tab sis cov ntsiab lus ntawm cov sulfur thiab sib npaug nrog lwm cov as-ham yog qhov sib txawv thiab yuav tsum tau txiav txim siab los ntawm kev tshuaj xyuas cov quav nrog rau kev sim av txhawm rau txheeb xyuas cov txheeb ze. Piv txwv li, qee cov kua swine manures muaj cov ntsiab lus tsis tshua muaj leej faj txheeb ze rau nitrogen, thiab cov lus teb rau cov qoob loo ntxiv rau sulfur chiv tau pom nyob rau hauv cov av uas tau muab pov tseg hauv kev sim teb uas muaj leej faj tsis txaus.
Kev siv cov tshuaj sulfur siab rau qis pH ntawm cov av tsis zoo heev. Qhov kev xyaum no feem ntau yog ua los sim ua kom hlau, zinc lossis lwm yam khoom noj muaj txiaj ntsig rau qee cov qoob loo horticulture. Ntxiv nrog rau cov tshuaj sulfur ntau ntxiv tuaj yeem ua rau kom cov ntsev soluble ntsev (sulphates) hauv cov av ua rau cov qib salinity nce ntxiv. Qhov nce hauv av salinity tuaj yeem txo cov qoob loo rhiab heev.