Txawm hais tias lub luag haujlwm tseem ceeb ntawm leej faj hauv cov qoob loo tsim tawm, lub caij no tsis tau txais kev saib xyuas tas li. Tau ntau xyoo, sulfur deficiency tsis thab feem ntau cov qos yaj ywm cog.
Yav dhau los, mineralized organic teeb meem thiab high-sulphur emissions muab cov kev xav tau ntawm cov qoob loo. Nyob rau hauv 30 xyoo dhau los, nrog rau txoj cai ntawm Clean Air Act, sulfur emissions tau txo nws cov muaj. Qhov tseeb yog tias, nrog rau nitrogen, phosphorus thiab poov tshuaj, sulfur yog ib qho tseem ceeb ntawm cov as-ham thiab txwv tsis pub cov qoob loo thiab cov khoom ua liaj ua teb zoo.
Sulfur tuaj yeem ua rau muaj kev cuam tshuam loj rau ob qho tib si zoo thiab ntau ntawm cov qos yaj ywm tubers. Nws yog ib qho tseem ceeb tshuaj rau kev tsim cov amino acids, thiab yog li ntawd cov proteins, thiab muaj peev xwm cuam tshuam txoj kev loj hlob tuber, tsim carbohydrate, kab mob, thiab chlorophyll ntau lawm. Kev tshawb fawb qhia tau hais tias lub ntsiab lus no muaj kev cuam tshuam loj heev rau lub ntiajteb txawj nqus, qhuav teeb meem, qab zib thiab hmoov txhuv nplej siab, thiab tuber loj.
Txij li thaum tsis muaj sulfur nyob rau hauv txhua theem ntawm kev loj hlob ntawm cov nroj tsuag tuaj yeem ua rau txo qis ntawm cov qoob loo, yuav tsum muaj cov tshuaj sulfur tas li - los ntawm qhov tshwm sim ntawm cov noob mus txog rau thaum xaus ntawm lub caij loj hlob. Nws yog ib qho tseem ceeb rau cov qoob loo kom tau txais sulfur thaum lawv xav tau ntau tshaj.
Nrog sulfur starvation, cov saum pib tig daj los ntawm saum. Sulfur txav qeeb heev los ntawm cov hlab ntsha ntawm cov nroj tsuag, yog li cov qos yaj ywm nplooj tsis rub nws deb ntawm cov laus thiab tig daj ntxov ntxov.
Sulfur koom nrog hauv kev sib txuas ntawm cov amino acids methionine thiab cysteine, vitamins B1 (thiamine) thiab B7 (biotin). Yog hais tias lub tubers tsis muaj leej faj, nitrogen absorbed los ntawm lawv los ntawm cov av tsis tig mus rau hauv ib tug protein daim ntawv.
Nyob rau hauv cov qos yaj ywm zus nyob rau hauv tej yam kev mob ntawm sulfur starvation, cov ntsiab lus ntawm nitrates nce los ntawm qhov nruab nrab ntawm 22%. Cov hmoov txhuv nplej siab ntawm tubers kuj txo qis, lawv saj zoo deteriorate, thiab lawv ripen ntev.
Cov nroj tsuag nqus ib feem ntawm cov sulfur los ntawm huab cua: cov microelement yog ib feem ntawm cov sulfur dioxide, uas yog emissions mus rau hauv cov huab cua los ntawm industrial lag luam. Los nag thiab yaj dej kuj ntxiv cov av rau qos yaj ywm nrog sulfur. Nyob rau hauv ib tuj ntawm organic chiv ( compost los yog humus) - kwv yees li 0,5 kg ntawm ib tug kab kawm.
Tab sis kev xyaum qhia tau hais tias thaum loj hlob 1 tuj ntawm qos yaj ywm, 2-4 kg ntawm microelement yog xav tau. Nroj tsuag nqus tau ib nrab ntawm qhov koob tshuaj no los ntawm huab cua, nag thiab yaj dej, thiab compost.
Polysulfate (0-0-14-19.2S-12.2Ca-3.6Mg) yog tau los ntawm polyhalite (natural mineral). Qhov no ntau yam chiv yog ib qhov chaw ntawm soluble poov tshuaj, magnesium thiab calcium raws li sulfates nrog cov ntsiab lus chlorine tsawg.
Lub polysulfate ncua kev tso tawm yam ntxwv txhais tau hais tias plaub qhov tseem ceeb cov as-ham (S 19.2%, K 14%, Mg 3.6%, Ca 12.2%) muaj nyob rau hauv txhua granule yuav muaj nyob rau hauv cov qos yaj ywm thaum lub sij hawm ncov xav tau, txij thaum pib ntawm nplooj loj hlob. rau tuber maturity.
Calcium nyob rau hauv cov chiv cuam tshuam cov tshuaj muaj pes tsawg leeg ntawm cov av, nrog rau cov yam ntxwv zoo ntawm qos tubers. Nyob rau hauv cov av los yog irrigated qoob loo qhov twg dej zoo yuav ua tau ib qho teeb meem, ntxiv calcium rau cov av yuav pab restore khaws cia ntsev. Polysulfate yog siv ua ntej cog, thaum cog los yog thaum lub sij hawm ridge tsim.
Muaj peb yam tseem ceeb ntawm sulfur chiv.
- Sulfate-sulfur Cov chiv muaj cov sulfur ua ke nrog lwm cov as-ham xws li nitrogen lossis potassium. Fertilizer yog nkag tau rau cov qoob loo loj hlob, thiab sulfate-sulfur chiv yaj sai sai. Feem ntau sulfate-sulfur fertilizer yog granular ammonium sulfate (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 nws lub cev zoo tso cai rau cov sib tov kom nyob twj ywm homogeneous.
- poov tshuaj sulfate (0-0-50-18 thiab lwm yam formulations) kuj muaj thiab ua haujlwm zoo rau legumes xws li alfalfa.
Muaj lwm cov chiv uas muaj qee qhov ntawm sulfur sulfate, xws li hauv kev sib xyaw lossis hauv cov khoom lag luam.
- elemental sulfur. Granular chiv (los ntawm 0-0-0-90 mus rau 99), nrog rau cov ntsiab lus sulfur ntawm 90 mus rau 99% nyob rau hauv daim ntawv elemental. Nws tsis tuaj yeem siv ncaj qha los ntawm cov nroj tsuag. Ua ntej, nws yuav tsum tau hloov los ntawm cov av microorganisms.
Fertilizers uas muaj leej faj nyob rau hauv daim ntawv ntawm thiosulfate, xws li kua ammonium thiosulfate (12-0-0-26) thiab 15-0-0-20 kuj yuav tsum tau oxidized los ntawm microbes nyob rau hauv cov av rau hauv daim ntawv sulfate. Fertilizer tuaj yeem siv ua ntej, thaum lub sijhawm lossis tom qab cog. Txawm li cas los xij, thaum siv rau nplooj, nws tuaj yeem ua rau hlawv.
tsiaj dung tuaj yeem muab cov nroj tsuag nrog sulfur nrog rau lwm cov as-ham, tab sis cov ntsiab lus ntawm lub caij thiab qhov sib npaug nrog lwm cov as-ham yuav tsum tau txiav txim siab siv cov kev ntsuam xyuas tshwj xeeb. Piv txwv li, qee cov npua slurries tsawg hauv cov sulfur piv rau nitrogen.