Ngati mwakhala mukufufuza njira zowunikira zowunikira zamtundu wa LED za malo anu okulirapo mbewu, mwakhala mukuvutitsidwa ndi ma metric osiyanasiyana omwe opanga zowunikira amagwiritsa ntchito kutsatsa malonda awo. Mawu ena ndi ma acronyms omwe mungawawone ndi awa: ma watts, lumens, LUX, makandulo amapazi, PAR, PPF, PPFD, ndi photon bwino. Ngakhale kuti mawu onsewa akukhudzana ndi kuyatsa, osankhidwa ochepa okha ndi omwe amakuuzani zofunikira za njira yowunikira ulimi wamaluwa. Cholinga cha nkhaniyi ndikutanthauzira mawu awa ndi mawu ofupikitsa, kukonza zolakwika zina zomwe anthu ambiri amakumana nazo, ndikuthandizira alimi kumvetsetsa kuti ndi miyeso iti yomwe ikugwiritsidwa ntchito pamakina owunikira zamaluwa, ndi omwe sali.
Anthu amagwiritsa ntchito Lumen
Zomera ndi anthu amaona kuwala mosiyana kwambiri. Anthu ndi nyama zina zambiri zimagwiritsa ntchito chinthu chotchedwa photopic vision m'malo owala bwino kuti azindikire mtundu ndi kuwala. Ma Lumens ndi gawo la kuyeza kotengera chitsanzo cha kukhudzidwa kwa diso la munthu pamalo owala bwino, ndichifukwa chake mtunduwo umatchedwa photopic response curve (Chithunzi 1). Monga mukuwonera, mawonekedwe amtundu wazithunzi amapangidwa ndi belu ndipo akuwonetsa momwe anthu amamvera kwambiri kuwala kobiriwira, kuposa kuwala kwabuluu kapena kofiira. LUX, ndi ma mita a makandulo amayezera kukula kwa kuwala (pogwiritsa ntchito ma lumens) poyatsira malonda ndi nyumba, kusiyana kokha pakati pa ziwirizi ndi gawo la malo omwe amayezedwa (LUX imagwiritsa ntchito lumen/m2 ndipo kandulo ya phazi imagwiritsa ntchito lumen/ ft2).
Kugwiritsa ntchito LUX kapena mita ya makandulo a phazi kuyeza kukula kwa kuwala kwa makina ounikira mbewu kumakupatsani miyeso yosiyanasiyana kutengera mawonekedwe a gwero la kuwala, ngakhale mukuyezera kulimba komweko kwa PAR.
Vuto lalikulu logwiritsa ntchito LUX kapena mita ya makandulo pamapazi poyesa kukula kwa kachitidwe kowunikira kwa horticulture ndikuwonetsetsa kwa buluu (400 - 500 nm) ndi kuwala kofiira (600 - 700 nm) pazowoneka bwino. Anthu sangazindikire kuwala m'maderawa, koma zomera zimagwiritsa ntchito kuwala kofiira ndi buluu kuyendetsa photosynthesis. Ichi ndichifukwa chake ma lumens, LUX, ndi makandulo amapazi sayenera kugwiritsidwa ntchito ngati njira zowunikira zakulima.
Kodi PAR ndi chiyani
PAR ndi cheza cha photosynthetic yogwira ntchito. Kuwala kwa PAR ndi kutalika kwa kuwala mkati mwa mawonekedwe a 400 mpaka 700 nanometers (nm) omwe amayendetsa photosynthesis (Chithunzi 1). PAR ndi mawu omwe amagwiritsidwa ntchito kwambiri (ndipo nthawi zambiri amagwiritsidwa ntchito molakwika) okhudzana ndi kuyatsa kwa ulimi wamaluwa. PAR SI muyeso kapena “metric” ngati mapazi, mainchesi kapena ma kilos. M'malo mwake, limafotokoza za mtundu wa kuwala wofunika kuthandizira photosynthesis. Kuchuluka ndi kuwala kowoneka bwino kwa kuwala kwa PAR ndizinthu zofunika kuziganizira. (Kuti mudziwe zambiri za mtundu wa kuwala kowoneka bwino dinani apa). Masensa a Quantum ndiye chida choyambirira chomwe chimagwiritsidwa ntchito kuwerengera kuchuluka kwa kuwala kwa kachitidwe kounikira ku horticulture. Masensawa amagwira ntchito pogwiritsa ntchito fyuluta ya kuwala kuti apange chidwi chofanana ndi kuwala kwa PAR (Chithunzi 1), ndipo angagwiritsidwe ntchito pamodzi ndi mita yowunikira kuti ayese mphamvu ya kuwala nthawi yomweyo kapena cholembera deta kuti ayese kukula kwa kuwala.
Kutsiliza
Kuti muthe kuyika ndalama munjira yoyenera yowunikira ulimi wamaluwa kuti mukwaniritse zolinga zanu zakulima ndi bizinesi, muyenera kudziwa PPF, PPFD, komanso kugwiritsa ntchito ma photon kuti mupange zisankho zogulira mwanzeru. Komabe, ma metric atatuwa sayenera kugwiritsidwa ntchito ngati zosintha zokha potengera zosankha zogula. Pali zosintha zina zingapo monga mawonekedwe a mawonekedwe ndi coefficient of utilization (CU) zomwe ziyenera kuganiziridwanso.
Zinthu zonse ziyenera kugwiritsidwa ntchito limodzi kuti musankhe njira zoyenera kwambiri kutengera kulima kwanu ndi zolinga zanu zamabizinesi, ndipo uthenga wotengera kunyumba ndikuti PPF, PPFD, ndi magwiridwe antchito a photon ndi njira zoyenera zomwe asayansi ndi makampani owunikira amalimi a horticulture amawagwiritsa ntchito. Ngati kampani sikupatsani miyeso yolondola yomwe imagwiritsidwa ntchito powunikira zamaluwa, sayenera kugulitsa njira zowunikira zamaluwa, ndipo simungathe kutsimikizira momwe makina awo amagwirira ntchito. Fluence Bioengineering nthawi zonse imasindikiza ma metrics awa m'mabuku azogulitsa ndipo ndi m'modzi mwa atsogoleri pazithunzithunzi za photosynthetic monga zimatsimikiziridwa ndi Rutgers ndi Utah State University.
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