Zvinetso zvemwenje we LED muHorticulture

Zvechokwadi, kune matambudziko mune chero teknolojia inobuda, uye kune matambudziko mu LED-based horticultural lighting. Parizvino, ruzivo rweiyo solid-state lighting tekinoroji ichiri isina kudzika. Kunyange masayendisiti ekurima maruva ave achiita makore akawanda achiri kudzidza "chiedza" chemiti. Mamwe eaya "mafomula" matsva haagoneki parizvino.

Vagadziri vemwenje vekuAsia vanowanzo miswa sezvigadzirwa zvinokwanisika asi zvakaderera, uye zvigadzirwa zvakawanda zvakaderera pamusika zvinoshaya zvitupa zvakaita seUL ratings, pamwe neLM-79 luminaire mishumo uye LM-80 LED mishumo. Varimi vazhinji vakaedza kuendesa mwenje we LED kutanga, asi vakanzwa kushushikana nekusashanda zvakanaka kwemwenje, saka mwenje wesodium inodzvinyirira ichiri chiyero chegoridhe muindasitiri iyi.

Ehe, kune akawanda emhando yepamusoro LED inokura zvigadzirwa zvemwenje pamusika. Nekudaro, varimi vehorticultural nemaruva vachiri kuda mametric ari nani ane chekuita nekushandisa. Semuyenzaniso, American Society of Agricultural and Biological Engineers (ASABE) Agricultural Lighting Committee yakatanga kuumba mastandarded metrics muna 2015. Basa iri riri kutarisa mametric ane chekuita nePAR (Photosynthetically Active Radiation) spectrum. Iyo PAR renji inowanzotsanangurwa seye spectral bhendi ye400-700 nm, apo mafotoni anoshingairira kutyaira photosynthesis. Mametrics akajairika anoenderana nePAR anosanganisira photosynthetic photon flux (PPF) uye photosynthetic photon flux density (PPFD).

Recipe uye metrics

Iyo "recipe" uye metrics zvakapindirana nekuti murimi anoda metrics kuti aone kana chirimwa luminaire chinopa kusimba uye spectral simba kugovera (SPD), iyo inosanganisira iyo "recipe".

Tsvagiridzo yepakutanga yakanangana nehukama hwekunyura kwechlorophyll kune simba rekuona, sezvo chlorophyll ndiyo kiyi yephotosynthesis process. Zvidzidzo zvemurabhoritari zvakaratidza kuti simba rinokwira muruvara rwebhuruu uye dzvuku rinoenderana nepamusoro pekunyura, nepo simba regirinhi richiratidza kusabatwa. Tsvagiridzo yekutanga yakatungamira kuwanda kwepink kana yepepuru mwenje pamusika.

Zvakadaro, kufunga kwazvino kwakanangana nekuvheneka kunopa simba repamusoro mubhuruu netsvuku, asi panguva imwe cheteyo kunoburitsa kuwanda kwechiedza sechiedza chezuva.

Chiedza chichena chakakosha zvikuru

Kushandisa chete tsvuku uye yebhuruu LED kukura marambi ndeyechinyakare. Paunoona chigadzirwa chine iyi spectrum, inobva pasayenzi yekare uye inowanzosanzwisiswa. Chikonzero chinoita kuti vanhu vasarudze bhuruu nehutsvuku imhaka yekuti marefu ewavelength aya anofambirana nekunyudza macurves echlorophyll a uye b akapatsanurwa mutest chubhu. Isu tinoziva nhasi kuti ese mafungu echiedza muPAR renji anobatsira kutyaira photosynthesis. Hapana mubvunzo kuti iyo spectrum yakakosha, asi inoenderana nekudyara morphology sehukuru uye chimiro.

Tinokwanisa kupesvedzera kureba nekutumbuka kwezvirimwa nekushandura spectrum. Vamwe varimi vanogara vachigadzirisa kusimba kwechiedza uye SPD nokuti zvirimwa zvine chimwe chinhu chakafanana ne-circadian rhythm, uye miti yakawanda ine rhythms yakasiyana uye "kugadzirisa" zvinodiwa.

Musanganiswa mukuru mutsvuku nebhuruu unogona kunge wakanakira muriwo wemashizha se lettuce. Asi zvakare akataura kuti kune zvinomera zvinotumbuka, zvinosanganisira matomatisi, kusimba kwakasimba kupfuura iyo yakakosha spectrum, 90% yesimba mu-high-pressure sodium rambi iri munzvimbo yero, uye lumens mumaruva chirimwa horticultural mwenje (lm. ), lux (lx) Uye kushanda zvakanaka kunogona kuve kwakaringana kupfuura PAR-centric metrics.

Nyanzvi dzinoshandisa 90% phosphor-yakashandurwa machena maLED mumagetsi avo, mamwe ese ari matsvuku kana kure-tsvuku ma LED, uye chena LED-based blue llumination inopa simba rose rebhuruu rinodiwa kuti rive rakakwana rekugadzirwa.