Cov neeg feem coob xav tias kev teeb pom kev zoo ntxiv tsuas yog siv nyob rau hauv cov tsev ntsuab uas muaj ntau lub hnub ci thiab tsis xav tau qee qhov teeb meem ntawm cov teeb meem no rau koj siv.
Ua ntej, xaus lus tau muab:
1) Lub teeb pom kev zoo ntawm lub hnub ci tsis haum rau photosynthesis .
2) Tus nqi ntawm lub teeb nyob rau hauv feem ntau cov tsev ntsuab tsis txaus thiab tsis khov khov .
3) Cov photosynthes ntawm cov tsev ntsuab nyob rau hauv thaj chaw hnub ci tsis siab .
4) Yog tsis muaj lub teeb pom kev zoo ntxiv, ua tiav cov txiaj ntsig tas mus li thiab ruaj khov rau hauv tsev cog khoom cog qoob loo yog tsis yooj yim.
1. Lub teeb zoo ntawm lub hnub ci
Daim duab hauv qab no yog lub spectrum ntawm tag nrho cov kev tshav ntuj ntawm lub hnub ci, nws yog cov kab kev sib tsoo los ntawm cov khoom siv hluav taws xob, nws yog cov khoom nqus los ntawm qee cov huab cua, ua rau muaj kev txo qis hauv lub teeb siv ntawm Cov wavelengths no, tsim kev nyuaj siab {{5 5}} Yog li no, nws tuaj yeem pom tau tias lub hnub ci ci yog}}} nm.
Tus Qauv Hnub Ci Spectrum yog ib qho kev siv hluav taws xob feem ntau siv nyob rau hauv lub hnub ci thiab hnub ci kev tshawb fawb thiab kev siv .
(Ceeb Toom: AM1 {{{. 5g yog cov huab cua zoo nkauj, 1.5 Txhais tau hais tias txoj kev tshav ntuj yog lub hnub ci ntsa iab, "} degrees, thiab g sawv rau ntiaj teb.)
Rau kev tshawb fawb cog lus, lub wavelength ntau yog 350-850 ni .
Daim duab hauv qab no yog lub spectrum ntawm am1.5g hauv pawg no:
Cov ntsiab lus hluav taws xob ntawm pawg no:
Ultraviolet Lub Teeb (350-399} nm): 9.34%
Lub teeb xiav (400-499 nm): 21.21%
Lub tsev ntsuab ({500-599 nm): 23.22%
Lub teeb liab (600-700 nm): 21.62%
Deb-liab ({{701-850 nm): 24.61% red-xiav piv r: b =1.02
Rau cov nroj tsuag photosynthesis, lub wavelength ntau yog 400-700 nm, tseem hu ua par .
Daim duab hauv qab no yog lub spectrum ntawm am1.5g hauv par band:
Cov ntsiab lus hluav taws xob hauv pawg no:
Lub teeb xiav (400-499 nm): 32.33%
Lub tsev ntsuab ({500-599 nm): 35.40%
Lub teeb liab (600-700 nm): 32.27%
R:B=1.02
Daim duab hauv qab no yog daim duab faib tawm ntawm photons hauv par band
Los ntawm cov ntaub ntawv saum toj no, lub teeb zoo ntawm lub hnub ci yog muab piv nrog peb cov nroj tsuag kev sib tw thiab cov teeb pom kev zoo dua li hauv tshav ntuj .
Txawm hais tias lub teeb zoo ntawm lub hnub ci tsis yog qhov zoo, nws sib ntsib ntawm peb lub ntsiab cai ntawm kev siv hluav taws xob: lub teeb kom muaj nuj nqis tshaj li kev ua tau zoo .
Yog li, lub teeb tiag tiag ntawm lub hnub ci hauv av?
Lub teeb zoo ntawm lub hnub ci hauv thaj chaw sib txawv los ntawm 23 Qib N (Xiav), 39℃N (Grey) sib txawv.
The above figure is a normalized spectrum diagram. It can be seen from the figure that the higher the latitude, the higher the blue light component. However, this figure cannot explain the red-to-blue ratio. It expresses the trend. We are concerned about the sunlight data in the greenhouse. Let's discuss it hauv qab .
2. Qhov zoo ntawm lub hnub ci hauv tsev cog khoom
Tsis hais hom tsev cog khoom, tshav ntuj yog attenuated, feem ntau yog vim muaj cov txheej txheem sib txawv, thiab lub hnub ci ci kuj hloov pauv .
Daim duab hauv qab no qhia tau cov kev hloov pauv hauv lub tsev cog khoom (liab) thiab sab nraud (xiav), siv cov ntaub ntawv sab nraud (xiav) .
Xam cov duab saum toj no, nws tau xaus lus tias lub hnub ci hauv lub tsev xog paj yog attenuated los ntawm ntau dua 35%.
Txawm tias lub tsev cog khoom venlo yuav muaj ntau dua 28% hnub ci ntsa iab .
Lub attenuation ntawm lub teeb zoo los ntawm tsev cog khoom translucent yog tsuas yog ultraviolet thiab xiav lub teeb .
Los ntawm cov txheeb ze piv tawm sab hauv thiab sab nraum lub tsev cog khoom thiab lub teeb xiav ntawm lub tshav ntuj yog ib feem ntawm cov tsev xog paj nruag hauv lub tsev cog khoom yuav nce ntxiv.
Ntau yam cuam tshuam rau lub teeb pom kev zoo ntawm lub hnub ci hauv lub tsev cog khoom yog tias lub tshav ntuj tsis yooj yim hloov pauv, thiab cov khoom siv tas li yog hloov pauv tau zoo, uas cuam tshuam zoo thiab ua tiav Nroj tsuag .
3. Tus nqi ntawm lub hnub ci hauv tsev cog khoom
Yuav ua li cas xam cov nyiaj ntawm lub hnub ci hauv lub tsev cog khoom?
Ua ntej, cia peb qhia lub tswvyim: DLI .
DLI: Niaj hnub tso cai ntawm lub hnub ci, uas txhais tau tias tus nqi hniav nyiaj ntawm cov qoob loo ib hnub, siv los ntsuas cov qoob loo square hauv ib hnub, mol / d / m2
DLI muaj feem xyuam rau thaj chaw thaj chaw {{0} DLI cuam tshuam txog cov kab sib txawv nyob ntawm cov hom thiab ntau yam lus teb nyob ntawm cov hom thiab ntau yam lus teb nyob ntawm hom thiab ntau yam lus teb nyob ntawm hom thiab ntau yam .
Lub DLI sab nraum tsev cog khoom sib txawv ntawm cov DLI sab hauv lub tsev cog khoom, feem ntau nrog qhov sib txawv ntawm {} mol / d / m2
DLI nyob rau hauv lub tsev cog khoom yuav tsum tau ntsuas rau lub sijhawm ntev, uas yog lub teeb pom kev zoo kom ntseeg tau tias tsev cog khoom cog .
Tsev cog khoom DLI suav:
Dli=σ 0.0036 * ppfdi * hi (i =12... n)
Qhov twg: lub sijhawm sib txawv, chav ua si: teev sib txawv nroj tsuag muaj sib txawv rau dli .
DLI nyob rau hauv thaj chaw sib txawv kuj txawv heev .
The DLI index calculation itself is not related to the light quality of sunlight. We can measure the illuminance in the greenhouse and then use the XD factor to convert PPFD. The influence of sunlight quality on DLI will be reflected to a certain extent.
XD Factor:Nyob rau hauv lub wavelength thaj tsam ntawm 400-700 nm, thaum lub teeb pom kev zoo nkauj (Lx)} {1} {{{2}
Kev hloov dua siab tshiab:Ppfd=Tus nqi} atingilluminance (Lx) / XD) / Xd) / xd lx
Nco tseg:Cov XD cov ntsiab lus muaj feem xyuam rau daim ntawv spectral ntawm lub teeb ci . mloliang lub teebactory muaj qhov sib txawv {}}
Cov XD meem XD hauv qab xd hauv qab no yog muab rau kev siv:
23 Qib Sab Nraud Qaum Teb Challitude, XD Factor: 57
39 Qib Qaum Qaum Teb Challitude, XD Qhov Tseeb: 55.4
44 Qib Sab Hauv Latitude, Xd Qhov Tseeb: 55
NCO TSEG: Cov ntaub ntawv XD meej kom muaj kev ua haujlwm tshaj lij kev tshaj lij .
Piv txwv li: nruab nrab hnub ci ntsa iab hauv lub tsev cog khoom hauv Guangdong hauv qee lub caij nyoog yog 13000, tom qab ntawd}} urol / s / m2
Yog tias lub sijhawm ua kom pom lub hnub ci hauv lub tsev cog khoom yog 7 teev, DLI nyob rau hauv lub tsev xog paj yog 0.0036 * {} mol / d / m2
Rau DLI nyob rau hauv lub tsev xog paj hauv qab 6, nws suav hais tias yog ib qib lub teeb qis.
4.}} Puas muaj thaj chaw uas muaj teeb pom kev zoo dua qub?
Los ntawm XD qhov zoo, nws tuaj yeem pom tau hais tias ntau dua cov latite, uas yog cov xim liab qab ntawm cov specuminate ntawm lub specumination thiab tsis zoo zoo .
Lub teeb kev ua tau zoo ntawm lub hnub ci tuaj yeem pom los ntawm ntuj tshwm sim, xws li qhov siab dua, tab sis luv dua cov nroj tsuag kev loj hlob .
Yog tias DLI nyob rau hauv thaj chaw cog qoob loo txog 45 MOL / D / M2, lub teeb ci ntsa iab yuav muaj ntau dua 2000 tus me nyuam yuav raug txo kom tsawg, thiab lub zog hluav taws xob txhua hnub ntawm cov nroj tsuag yog tsis txaus . tib lub sijhawm, lub siab xiav teeb meem ntawm cov txiv hmab txiv ntoo thiab zaub lossis iab .
Cov khoom lag luam zoo tshaj plaws yog lub cim tseem ceeb ntawm kev ua liaj ua teb niaj hnub los kho cov teeb pom kev zoo, txwv tsis pub, cov zis-tso zis tawm tsis tuaj yeem ua tiav {}}
Tag
Bio-Optics siv txoj kev xav ntawm Photoon Quancation kom tag nrho cov teeb pom kev zoo ib qho teeb pom kev zoo lub teeb tshuab .
Yog tias tsis muaj daim ntawv thov teeb pom kev zoo thev naus laus zis nyob rau hauv lub tsev cog khoom, cia nyob ib leeg ntawm cov tsev cog khoom niaj hnub no .
