Nitrogen chiv yog cov inorganic thiab cov organic khoom uas muaj nitrogen thiab yog siv rau cov av los txhim kho yields. Nitrogen yog lub ntsiab lub hauv paus ntawm lub neej cog, nws cuam tshuam rau txoj kev loj hlob thiab cov metabolism ntawm cov qoob loo, saturates lawv nrog tseem ceeb thiab cov khoom noj haus.
Qhov no yog ib yam khoom uas muaj zog heev uas ua rau ob leeg tswj tau phytosanitary mob ntawm cov av, thiab muab cov nyhuv txawv - thaum nws yog oversupplied thiab siv. Nitrogen chiv txawv nyob rau hauv cov nyiaj ntawm nitrogen muaj nyob rau hauv lawv thiab muab cais ua tsib pawg. Qhov kev faib tawm ntawm nitrogen chiv ua piv txwv tias nitrogen tuaj yeem noj cov tshuaj sib txawv ntawm ntau hom tshuaj hauv chiv txawv.
Lub luag haujlwm ntawm nitrogen rau kev cog kev loj hlob
Lub ntsiab nitrogen reserves muaj nyob hauv cov av (humus) thiab tsim txog li 5%, nyob ntawm seb tej qhov xwm txheej twg thiab cov chaw muaj huab cua. Qhov ntau humus nyob rau hauv cov av, lub richer thiab ntau noj nws yog. Qhov feem ntau cov neeg pluag nyob rau hauv nitrogen cov ntsiab lus yog lub teeb xuab zeb thiab Sandy xau.
Txawm li cas los xij, txawm tias cov av zoo heev, tsuas yog 1% ntawm tag nrho cov nitrogen uas muaj nyob rau hauv nws yuav tsum muaj rau cov khoom noj khoom haus, txij thaum lub zwj ceeb ntawm humus nrog tso tawm cov kua roj salmon tshwm sim heev heev. Yog li ntawd, nitrogen chiv ua si tseem ceeb heev hauv cov qoob loo ntau lawm, lawv qhov tseem ceeb tsis yog qhov tsis zoo, vim hais tias yuav cog qoob loo loj thiab tsis zoo siv lawv cov teeb meem.
Nitrogen yog ib qho tseem ceeb ntawm cov protein, uas, tig mus, koom tes rau hauv qhov kev tsim ntawm cytoplasm thiab lub keeb ntawm cov nroj tsuag hlwb, chlorophyll, feem ntau cov vitamins thiab enzymes uas ua si lub luag haujlwm tseem ceeb hauv txoj kev loj hlob thiab kev loj hlob. Yog li, kev sib ntxiv nitrogen noj kom nce qib feem pua ntawm cov protein thiab cov ntsiab lus ntawm cov as-ham zoo hauv cov nroj tsuag, ua kom cov qoob loo thiab kev txhim kho nws zoo. Nitrogen raws li ib tug fertilizer siv rau:
- accelerating cog kev loj hlob;
- cog kev tuaj yeem nrog cov amino acids;
- nce qhov ntim ntawm cov nroj tsuag hlwb, txo cuticle thiab plhaub;
- accelerating cov txheej txheem mineralization ntawm cov khoom noj haus tau muab tso rau hauv cov av;
- qhib rua ntawm av microflora;
- extraction ntawm cov kab tsim kev puas tsuaj;
- nce yields
Yuav ua li cas los txiav txim siab nitrogen deficiency nyob rau hauv cov nroj tsuag
Tus nqi ntawm nitrogen fertilizer thov ncaj qha nyob ntawm qhov muaj pes tsawg leeg ntawm cov av uas cov nroj tsuag muaj cultivated. Tsis txaus nitrogen cov ntsiab lus nyob rau hauv cov av ncaj qha cuam tshuam lub viability ntawm cov qoob loo zus. Tsis muaj nitrogen nyob rau hauv cov nroj tsuag yuav txiav txim los ntawm lawv cov tsos: cov nplooj yau, poob xim los yog tig daj, tuag tawm sai sai, kev loj hlob thiab kev loj hlob qis dua, thiab cov tub ntxhais hluas tua kom tsis txhob loj hlob.
Txiv hmab txiv ntoo ntoo nyob rau hauv tej yam kev mob ntawm ib tug tsis nitrogen tsis zoo branched, txiv hmab txiv ntoo los ua ntiav thiab crumble. Nyob rau hauv cov ntoo zeb, nitrogen deficiency ua rau reddening ntawm bark. Tsis tas li ntawd, dhau lawm acidic xau thiab ntau sodding (cog ntoo ntawm perennial grasses) ntawm thaj chaw nyob rau hauv cov txiv hmab txiv ntoo ntoo yuav provoke nitrogen starvation.
Cov cim qhia ntawm nitrogen ntau heev
Ntau dhau nitrogen, thiab tsis muaj peev xwm, ua rau muaj kev puas tsuaj loj heev rau cov nroj tsuag. Thaum muaj ib qho dhau ntawm nitrogen, cov nplooj ua tsaus ntsuab nyob rau hauv cov xim, loj hlob unnaturally loj, ua muaj kua. Nyob rau tib lub sij hawm, lub flowering thiab ripening txiv hmab txiv ntoo nyob rau hauv txiv hmab txiv ntoo-kev coj tus kheej nroj tsuag yog ncua. Ib qho khoom seem ntawm nitrogen rau succulent nroj tsuag xws li aloe, cactus, thiab lwm yam., Xaus rau hauv qhov tuag los yog cov tuag nti, vim thinned tawv tau tawg. 
Hom ntawm nitrogen chiv thiab txoj kev ntawm lawv cov kev siv
Nitrogen chiv yog tau los ntawm hluavtaws ammonia thiab, nyob ntawm seb lub xeev ntawm aggregation, raug muab faib ua tsib pawg:
- Nitrate: calcium thiab sodium nitrate;
- Ammonium: ammonium chloride thiab ammonium sulfate.
- Ammonium nitrate los yog ammonium nitrate - ib pawg ua ke uas ua rau ammonium thiab nitrate chiv, piv txwv, li ammonium nitrate;
- Amide: urea
- Kua ammonia chiv, xws li anhydrous ammonia thiab ammonia dej.
Tsis muaj tsawg tseem ceeb chiv yog potash: poov tshuaj ntsev, poov tshuaj humate thiab phosphate: superphosphate.
Ammonium nitrate
Ammonium nitrate - zoo fertilizer nyob rau hauv daim ntawv dawb ntawm pob tshab granules, muaj txog 35% nitrogen. Nws yog siv raws li daim ntawv thov kev pabcuam loj thiab kev hnav khaub ncaws. Ammonium nitrate tshwj xeeb tshaj yog nyob rau hauv cov cheeb tsam uas tsis muaj qhov moistened uas muaj qhov sib xyaw ua ke ntawm cov tshuaj av. On overmoistened xau, lub fertilizer yog ineffective vim hais tias nws yog sai sai tam sim ntawd los ntawm av nrog rau nag lossis daus.
Cov nyhuv ntawm ammonium nitrate on nroj tsuag yog ntxiv dag zog rau qia thiab kev loj hlob ntawm hardwood, thiab kuj ua rau ib qho kev nce rau hauv av acidity. Yog li, thaum siv nws, nws pom zoo kom ntxiv ib tug neutralizer (chalk, txiv qaub, dolomite) rau ammonium nitrate ntawm tus nqi ntawm 0.7 kg ib 1 kg ntawm nitrate. Niaj hnub no, nyob rau hauv qhov loj muag muag tsis pom ntshiab ammonium nitrate, thiab npaj kom txhij-ua mixtures yog muag.
Ib qho kev xaiv zoo yuav tsum muaj ib qho dej ntawm ammonium nitrate 60% thiab cov khoom tsis zoo rau 40%, uas yuav tawm los txog 20% nitrogen. Ammonium nitrate yog siv thaum lub sij hawm kev khawb ntawm lub vaj teb nyob rau hauv kev npaj rau cog. Nws kuj siv tau ua ib chiv thaum cog cov noob.
Ammonium sulfate
Ammonium sulfate muaj txog li 20.5% nitrogen, uas yog zoo nkag mus rau cov nroj tsuag thiab yog tsau hauv cov av vim cov ntsiab lus cationic nitrogen. Qhov no tso cai rau kev siv chiv nyob rau hauv lub caij nplooj ntoos zeeg, tsis muaj kev ntshai ntawm tej zaum tseem ceeb ntawm pob zeb ntxhiab vim leaching mus rau hauv av. Ammonium sulphate kuj yog tsim raws li lub ntsiab daim ntawv thov rau fertilizing.
Nyob rau cov av muaj acidifying nyhuv, yog li ntawd, raws li nyob rau hauv cov ntaub ntawv ntawm nitrate, mus rau 1 kg ntawm ammonium sulphate koj yuav tsum tau ntxiv 1.15 kg ntawm ib tug contaminated neutral (chalk, txiv qaub, dolomite, thiab lwm yam). Raws li kev tshawb fawb, fertilizer muab ib qho zoo heev siv thaum siv nws mus pub qos yaj ywm. Ammonium sulphate tsis xav tau ntawm cia tej yam kev mob, vim nws tsis moistened li ammonium nitrate.
Nws tseem ceeb heev! Ammonium sulfate yuav tsum tsis txhob yuav tov nrog alkaline chiv: tshauv, tomasshlak, slimed txiv qaub. Qhov no ua rau nitrogen poob.
Cov tshuaj nitrate nitrate
Cov kua nitrate, los yog potassium nitrate, yog cov pob zeb hauv av uas yog cov hmoov av dawb los yog cov nplais, uas yog siv cov khoom noj ntxiv rau cov qoob loo uas tsis tso tshuaj. Qhov muaj pes tsawg leeg yog ob lub thawv loj: potassium (44%) thiab nitrogen (13%). Qhov no piv nrog tus prevalence ntawm poov tshuaj yuav siv tau txawm tom qab flowering thiab tsim ntawm ovaries.
Qhov no Kex ua haujlwm zoo heev: ua tsaug rau nitrogen, kev loj hlob ntawm cov qoob loo yog accelerated, thaum poov tshuaj nce lub zog ntawm lub keeb kwm thiaj li hais tias lawv nqus cov txiv hmab txiv ntoo los ntawm cov av ntau nquag. Vim yog cov biochemical kev sib tsoo uas ua rau nitrate nitrate ua raws li cov catalyst, kev ua pa ntawm cov nroj tsuag hlwb zoo tuaj. Qhov no activates lub cev ntawm cov nroj tsuag, txo txoj kev pheej hmoo ntawm ntau yam kab mob.
Cov nyhuv no muaj cov txiaj ntsig zoo ntawm kev nce cov khoom lag luam. Cov kua tshuaj nitrate muaj hygroscopicity, uas yog, nws yooj yim yaj hauv dej los npaj cov kev daws teeb meem rau cov nroj tsuag. Fertilizer yog tsim rau ob qho tib si paus thiab foliar fertilizing, nyob rau hauv qhuav thiab kua daim ntawv. Txoj kev daws teeb meem ceev nrooj, yog li nws siv ntau dua rau cov ntaub ntawv thov.
Hauv kev ua liaj ua teb, potassium nitrate tsuas yog pub zaub ntsuab, blueberries, strawberries, beets, carrots, txiv lws suav, haus luam yeeb thiab txiv hmab. Tab sis qos yaj ywm, piv txwv li, kev hlub phosphorus, yog li no fertilizer yuav tsis siv rau nws. Nws ua rau tsis muaj kev nkag siab mus ntxiv poov tshuaj nitrate thiab nyob rau hauv zaub, cabbage thiab radish, txij li xws li kev siv fertilizer yuav irrational.
Cov nyhuv ntawm nitrogen chiv nyob rau hauv daim ntawv ntawm poov tshuaj nitrate on nroj tsuag yog los txhim kho qhov zoo thiab nce tus nqi ntawm cov qoob loo. Tom qab fertilization, lub pulp ntawm txiv hmab txiv ntoo thiab berries yog tag nrho noo nrog txiv hmab txiv ntoo sugars, thiab qhov loj ntawm cov txiv hmab txiv ntoo lawv tus kheej nce. Yog hais tias koj ua hnav khaub ncaws nyob rau theem ntawm kev tso zes qe menyuam, tom qab ntawd cov txiv mam li nce lub neej txuag ntawm cov txiv hmab txiv ntoo, lawv yuav ntev zuj zus lawv qhov qub, noj qab haus huv thiab saj.
Calcium Nitrate
Calcium nitrate, calcium nitrate los yog calcium nitrate yog ib qho chiv ua tau los ntawm daim ntaub ntawm cov granules los yog crystalline ntsev thiab muaj cov dej nyob hauv dej ntau. Txawm hais tias nws yog nitrate chiv, nws tsis ua rau tib neeg kev noj qab haus huv yog tias kev siv tshuaj thiab kev pom zoo rau kev siv, thiab nws coj zoo rau kev ua liaj ua teb thiab horticulture.
Nyob rau hauv lub composition - 19% calcium thiab 13% nitrogen. Calcium nitrate zoo vim nws tsis nce acidity hauv lub ntiaj teb, tsis zoo li ntau lwm hom chiv muaj nitrogen. Qhov no feature tso cai rau kev siv cov calcium nitrate rau ntau hom av. Tshwj xeeb tshaj yog zoo fertilizer ua hauj lwm on sod-podzolic xau.
Nws yog calcium uas txhawb nqa tag nrho ntawm nitrogen, uas kom zoo kev loj hlob thiab kev loj hlob ntawm cov qoob loo. Nrog ib tug tsis muaj calcium, hauv paus system ntawm cov nroj tsuag, uas lacks noj haus, suffers nyob rau hauv thawj qhov chaw. Lub hauv paus pib nres moisture thiab rot. Nws yog qhov zoo dua los xaiv granulated ntawm ob qho uas muaj cov khoom qub uas muaj cov kab mob calcium uas nitrate, nws yuav yooj yim los tswj, tsis tsuag tsuag thaum siv thiab tsis nqus ya raws huab cua.
Main Cov txiaj ntsig ntawm cov poov hlau nitrate:
- high-zoo tsim ntawm ntsuab loj ntawm nroj tsuag vim cell txhawb;
- lub acceleration ntawm noob germination thiab tubers;
- kev kho kom zoo thiab kev txhim kho ntawm lub hauv paus system;
- nce tsis kam mus rau tus kab mob, cov kab mob thiab cov hu ua fungi;
- nce lub caij ntuj no hardiness ntawm cov nroj tsuag;
- kev txhim kho ntawm saj thiab qhov ntsuas ntawm cov qoob loo.
Koj puas paub? Nitrogen pab zoo nyob rau hauv kev sib ntaus tawm tsam kab tsuag pests ntawm txiv hmab txiv ntoo ntoo, rau cov uas urea yog feem ntau siv raws li ib tug insecticide. Ua ntej lub buds Bloom, lub crown yuav tsum tau sprayed nrog ib tug daws ntawm urea (50-70 g ib 1 l dej). Qhov no yuav txuag cov nroj tsuag ntawm kab tsuag hibernating nyob rau hauv lub bark los yog nyob rau hauv cov av nyob ib ncig ntawm lub voj voog ntoo. Tsis txhob pub ntau tshaj li lub urea tshuaj, txwv tsis pub nws yuav hlawv cov nplooj.
Sodium Nitrate
Sodium nitrate, sodium nitrate los yog sodium nitrate tsuas yog siv rau hauv cov qoob loo thiab kev ua liaj ua teb xwb, tab sis kuj muaj kev lag luam. Cov no yog cov muaj zog ntawm cov xim dawb, feem ntau nrog cov xim daj los yog grayish, zoo soluble hauv dej. Cov ntsiab lus nitrogen hauv nitrate yog li ntawm 16%.
Sodium nitrate yog tau los ntawm cov khoom siv hluav taws xob uas yog siv cov txheej txheem crystallization los ntawm cov khoom cua ammonia, uas muaj nitrogen. Sodium nitrate nquag siv rau txhua hom av, tshwj xeeb tshaj yog rau cov qos yaj ywm, cov piam thaj thiab cov ntoo, cov zaub, txiv hmab txiv ntoo thiab cov paj ntoo qoob loo thaum siv thaum ntxov hauv lub caij nplooj ntoo hlav.
Feem ntau zoo ua rau acidic xau, txij thaum nws yog ib qho alkaline fertilizer, nws alkalizes cov av me ntsis. Sodium nitrate tau pov thawj nws tus kheej ua ib qho kev hnav khaub ncaws thiab siv thaum cog. Fertilizer tsis pom zoo kom siv nyob rau hauv lub caij nplooj zeeg, raws li muaj feem yuav raug nitrogen leaching mus rau hauv av.
Nws tseem ceeb heev! Nws yog txwv tsis pub ua sodium nitrate thiab superphosphate. Nws tseem tsis tau siv nws rau saline xau, vim lawv twb oversaturated nrog sodium.
Urea
Urea, los yog carbamide - crystalline granules nrog cov ntsiab lus nitrogen (li 46%). Qhov ntxiv yog tias nitrogen nyob rau hauv lub urea yooj yim soluble hauv dej thaum lub as-ham tsis mus rau hauv qab txheej ntawm av. Urea raug nquahu kom siv los ua foliar, vim hais tias nws maj mam ua thiab tsis hlawv cov nplooj, thaum saib cov tshuaj npaum li cas.
Yog li, urea yuav siv tau thaum lub sij hawm cog qoob los ntawm cov nroj tsuag, nws yog haum rau txhua hom thiab lub sij hawm ntawm daim ntawv thov. Fertilizer yog siv ua ntej sowing, raws li lub ntsiab hnav khaub ncaws, los ntawm txoj kev sib sib zog nqus cov nplais hauv av thiaj li ammonia tsis evaporate sab nraum zoov. Thaum lub sij hawm sowing, nws yog pom zoo siv thov urea nrog potash chiv, qhov no yuav pab tshem tawm qhov tsis zoo cov nyhuv uas urea muaj peev xwm muaj vim muaj cov khoom muaj teeb meem biuret hauv nws muaj pes tsawg leeg.
Ib cov ntaub qhwv ntsej muag raug muab coj los siv ua ib rab phom tsuag thaum sawv ntxov los yog yav tsaus ntuj. Ib tug daws ntawm urea (5%) tsis hlawv nplooj, nyob rau hauv sib piv rau ammonium nitrate. Fertilizer yog siv rau txhua hom av rau kev pub zaub paj, cov txiv hmab txiv ntoo thiab txiv hmab txiv ntoo, zaub thiab cov qoob loo. Urea yog nkag tau rau hauv av ob lub lis piam ua ntej sowing thiaj li hais tias biuret muaj lub sij hawm mus rau dissolve, txwv tsis pub lub nroj tsuag yuav tuag.
Nws tseem ceeb heev! Tsis txhob cia kua nitrogen-muaj chiv rau ntawm nplooj ntawm cov nroj tsuag. Qhov no ua rau lawv cov hlawv.
Ua Kua Nitrogen Chiv
Cov kua chiv tau txais cov koob npe nrov vim yog tus nqi pheej yig: cov khoom hloov tawm mus ua 30-40% cheaper than nws cov khoom sib xws. Xav txog qhov yooj yim kua nitrogen chiv:
- Ua kua dej cawv ammonia yog cov concentrated nitrogen fertilizer uas muaj txog li 82% nitrogen. Nws yog ib qho tsis muaj kob uas tsis muaj kob zoo li (mobile) uas muaj ib qho tsis hnov tsw ntxhiab ntawm ammonia. Rau nqa tawm hnav khaub ncaws nrog kua ammonia, siv tshwj xeeb kaw cov cav tov, tso lub fertilizer mus rau ib tug tob ntawm yam tsawg kawg yog 15-18 cm thiaj li hais tias nws tsis evaporate. Khaws cia rau hauv cov hluav taws sib tsoo tshwj xeeb.
- Ammonia dej, lossis dej aqueous ammonia - ua ob hom nrog ntau feem pua ntawm nitrogen 20% thiab 16%. Raws li zoo li kua ammonia, ammonia dej yog tswvcuab tshwj xeeb cov cav tov thiab muab cia rau hauv kev tso tsheb hlau luam uas kaw tau tsim rau kev kub siab. Nyob rau hauv cov nqe lus ntawm kev ua haujlwm, cov no ob chiv yog vaj huam sib luag rau khoom crystalline nitrogen-muaj chiv.
- Ammonia yog tau los ntawm kev sib tw ua ob peb zaug ntawm nitrogen chiv nyob hauv aqueous ammonia: ammonium thiab calcium nitrate, ammonium nitrate, urea, etc. Qhov tshwm sim yog daj kua chiv, uas muaj los ntawm 30 mus rau 50% nitrogen. Los ntawm lawv cov nyhuv ntawm cov qoob loo, ammoniacs yog sib npaug kom muaj nitrogen chiv, tab sis tsis yog li ntawd vim muaj kev cuam tshuam rau kev siv. Ammonacs yog thauj thiab khaws cia hauv txheeb cov txhuas npiv npog txhim kho kom tsis muaj qhov siab.
- Urea-ammonia sib tov (CAM) yog ib qho ua tau zoo heev ua kua nitrogen chiv uas yog nquag siv hauv cov qoob loo ntau lawm. CAS kev daws teeb meem muaj qhov ua tau zoo tshaj lwm yam nitrogenous chiv. Qhov loj tshaj plaws yog cov ntsiab lus tsis muaj kev ywj pheej ntawm dawb ammonia, uas yuav luag tshem tawm qhov tsis tau nitrogen vim lub volatility ntawm ammonia thaum lub tsheb thauj mus los thiab kev qhia txog nitrogen hauv cov av, uas yog cai thaum siv cov kua ammonia thiab ammonia. Yog li, tsis tas yuav tsim kom muaj chaw ruaj khov thiab chaw tso tsheb rau tsheb thauj mus los.
Tag nrho cov kua chiv muaj lawv qhov zoo tshaj li cov khoom - zoo digestibility ntawm cov nroj tsuag, ntev ntev ntawm kev txiav txim thiab lub peev xwm kom tusyees faib cov khaub ncaws sab saum toj.
Raws li cov organic chiv koj yuav siv tau sideratis, charcoal, tshauv, sawdust, chiv: nyuj, yaj, luav, nqaij npuas, nees.
Organic Nitrogen Chiv
Nitrogen muaj nyob rau hauv cov zauv me me hauv yuav luag txhua hom organic chiv. Hais txog 0.5-1% nitrogen muaj chiv quav; 1-1.25% - noog daj (nws cov ntsiab lus siab tshaj plaws yog nyob rau hauv nqaij qaib, os thiab nquab droppings, tab sis lawv kuj muaj ntau yam lom).
Organic nitrogen chiv yuav npaj tau nws tus kheej: peat-based compost heaps muaj txog li 1.5% nitrogen; nyob rau hauv lub compost los ntawm domestic pov tseg txog 1.5% ntawm nitrogen. Cov ntsuab ntsuab (clover, lupine, qab zib clover) muaj txog 0.4-0.7% ntawm nitrogen; ntsuab foliage - 1-1.2% nitrogen; pas dej hauv lub pas dej - los ntawm 1.7 rau 2.5%.
Nws yog tsim nyog nco ntsoov tias kev siv cov organic organ tib leeg li qhov chaw ntawm nitrogen yog inefficient. Qhov no tuaj yeem cuam tshuam qhov av zoo, acidify nws thiab tsis muab cov khoom noj khoom haus nitrogen tsim nyog rau cov qoob loo. Nws yog qhov zoo tshaj plaws los muab kev xaiv rau kev siv ntawm ib qho ntawm cov pob zeb hauv av thiab cov organic nitrogen chiv kom ua tiav cov txiaj ntsim siab tshaj plaws rau cov nroj tsuag.
Cwj pwm
При работе с азотными удобрениями обязательно придерживаться инструкции по применению, соблюдать рекомендации и не нарушать дозировку. Второй важный момент - это наличие закрытой, плотной одежды, чтобы препараты не попали на кожу и слизистую.
Особенно токсичны жидкие азотные удобрения: аммиак и аммиачная вода. Nco ntsoov ua raws li txoj cai kev ruaj ntseg thaum ua haujlwm nrog lawv. Lub tank tso dej rau ammonia dej yuav tsum tau ntim kom tsis pub tshaj 93% kom tsis txhob muaj cov kauv tawm ntawm cua kub. Tsuas yog cov neeg hauv cov khaub ncaws tshwj xeeb tiv thaiv uas tau mus kuaj mob, kev cob qhia thiab kev qhia raug tso cai ua haujlwm nrog kua ammonia.
Nws yog txwv tsis pub khaws cov ammonia chiv thiab nqa tawm ua haujlwm nrog lawv nyob ze hluav taws (ze tshaj 10 m). Fine-crystalline ammonium nitrate ceev nrooj nplawm, yog li nws tsis tuaj yeem muab cia rau hauv ib lub chaw ntub dej. Cov kaus mom loj loj yuav tsum tau crushed ua ntej pub mis, kom tsis txhob muaj zog ntawm concentration ntawm fertilizer nyob rau hauv ib qhov chaw.
Sodium nitrate yuav tsum muab ntim rau hauv tsib ntim ntawv hauv cov hnab yas hnab yas ntim quav. Kev thauj cov hnab hauv cov kis vov, cov nkoj kaw thiab npog kev thauj. Koj tuaj yeem tsis sib coj thauj cov tshuaj sodium nitrate nrog cov khoom ntim thiab khoom noj.
