Nui nā kumu e lawe ai ka poʻe mahiʻai ma luna o ka moku i ke kūkulu ʻana i hale ʻōmaʻomaʻo a i ʻole wahi ulu.
ʻO ka mea mua, aia nā mea kanu ola a ulu i kahi kūlana māmā. A laila, aia ka wela a me ke kukui māmā, ʻaʻole e haʻi i ka wahi a me ka mākeke. ʻAʻohe mea kupanaha i ka lawe ʻana i kēlā ʻano paʻakikī hiki ke manaʻo nui loa, e hoʻomaka me ka liʻiliʻi. ʻO ka hoʻohui ʻana i ka pilikia ʻo nā acronyms, a e like me nā ʻoihana he nui, loaʻa i ka agritech kāna jargon ponoʻī e wehewehe. ʻO kēia mau acronyms - PAR, PPF, PPFD - i hoʻohana ʻia me nā huaʻōlelo e like me watts, lumens, photon efficiency a me LUX, he mea koʻikoʻi i ke kōkua ʻana iā ʻoe e holomua i kāu kahua i koho ʻia (no kekahi, ʻoiaʻiʻo maoli) i mea e hana ai i kahi ulu kūpono a me nā hua.
Eia naʻe, e like me ka hapa nui o nā mea o ke ola, ʻo ka hoʻomaopopo ʻana i ke ʻano o kā lākou manaʻo he mea paʻakikī paha akā hiki ke hoʻopaʻa ʻia. Ma ʻaneʻi, hāʻawi mākou i kahi ʻike e pili ana i ka manaʻo o PAR, PPF a me PPFD, a no ke aha he mea nui ia e ʻike ai:
PAR (Photosynthetic Active Radiation)
ʻO PAR kekahi ʻano kukui e hoʻoulu ai i ka photosynthesis a hiki i ka wā e ʻai ai kāu mea kanu i nā kiʻi kiʻi o nā lōʻihi hawewe māmā e noho ana i loko o ka laulā ʻike ʻia o 400 a me 700 nanometer.
Ua wehewehe mua ʻia e ka noiʻi i hana ʻia e Dr. Keith McCree i nā makahiki 1970 mua, ʻaʻole ana ʻo PAR i ka māmā akā he huaʻōlelo ia e hiki ke kōkua i ka mea kanu e hoʻoholo i ke ʻano a me ka nui o ka mālamalama e pono ai no ka hua kanu maikaʻi loa a me ke olakino. Hoʻohana ʻia e nā ʻōnaehana māmā e hoʻohālike i ka mālamalama maoli, hiki ke hoʻopaʻa ʻia ke kukui PAR me nā ʻoluʻolu māmā ʻē aʻe e hoʻololi i ka māmā māmā, hoʻohana, a me nā ana.
He aha ke ʻano o kēia no ka mea kanu?
ʻO PAR kahi huaʻōlelo e pono e hoʻohana e kōkua i ka hoʻomaopopo piha ʻana i ka hoʻolālā kukui a me ka hoʻohana ʻana.
ʻO kekahi o nā kumu kumu nui e hoʻomaopopo ai ma mua o ka kūʻai ʻana i nā kukui ulu a i ʻole ke kau inoa ʻana i kekahi mea e ʻike i ka nui o ka PAR a lākou e hana ai, ka nui o ka ikehu a lākou e hoʻohana ai e hana i kā lākou PAR, a me ka nui o ka PAR i loaʻa no nā mea kanu.
PPF (Photosynthetic Photon Flux)
ʻO ka PPF ka huaʻōlelo i hoʻohana ʻia e wehewehe i ke ana ʻana o PAR a ʻo ia ka lua o ka mea nui i kāu meaʻai i ke kukui kūpono no kāu wahi ulu. ʻO kāna waiwai e hoʻoholo ai i ka nui o ka PAR e hana ʻia e kekahi ʻōnaehana kukui i ka manawa o ke kekona. E kōkua ʻo PFF iā ʻoe e hoʻomaopopo pono i ka nui o ka mālamalama o kāu ʻōnaehana kukui ulu e hiki ke hoʻohana ʻia e kāu mau mea kanu no ka photosynthesis.
He aha ke ʻano o kēia no ka mea kanu?
ʻO ka hoʻomaopopo ʻana i ke kaʻina hana ʻo ia ka hapalua o ke kaua ʻana o ka hopu ʻana i ke ʻano o ka PPF - pono nō hoʻi ia i kahi mākaukau makemakika. Hiki iā ʻoe ke hilinaʻi i nā hāmeʻa ana PPF i loaʻa ma ka mākeke e kōkua, a i ʻole e koho paha ʻoe e hana pū me kahi hoa hilinaʻi e hiki ke kōkua iā ʻoe e hana i kahi ʻōnaehana kukui e kūpono i kāu koi pono i ka hāʻawi ʻana i ka PAR a me ka PPF kūpono no ʻoe. He micromoles wale nō ka PPF i kēlā me kēia kekona (µMol/S) - hoʻokahi micromole ma kahi o 602 quadrillion photons.
PPFD (Photosynthetic Photon Flux Density)
ʻO ka hapakolu o ka PAR jigsaw ʻo PPFD. Ana ʻia ia i nā micromoles no kēlā me kēia mika square no kekona (µMol/m2/S) a ʻoi aku ma mua o ke ana ʻana i ka PPF, hoʻokumu pū ia i ka mānoanoa o nā kiʻi e hāʻule ana ma kahi ʻili. ʻO ka PPFD e pili ana i ka nui o kēlā mau kiʻi kiʻi kiʻi kiʻi kiʻi e hoʻopilikia maoli i ka wahi ulu a me ka maikaʻi o ka hana ʻana o kēlā mau kukui i ka wā e hiki mai ana i kā lākou huahana.
He aha ke ʻano o kēia no ka mea kanu?
He mea nui ia e hōʻoia i ka pololei o ka ʻikepili PPFD i loaʻa iā ʻoe mai kāu mea hana kukui ulu a uhi i ka wahi āpau o ka mālamalama. He mea maʻalahi ka lomilomi ʻana i kēia ʻike, no laila e noʻonoʻo i nā mea e like me ka mamao mai ke kumu kukui, kahi helu o nā ana e helu ai i ka awelika, a me ka ratio liʻiliʻi/kiʻekiʻe ma mua o kou kūʻai ʻana. Eia hou, pono e noʻonoʻo e hana pū me kahi loea ulu kukui hiki ke hāʻawi iā ʻoe i nā metric kūpono a me nā mea hana kūpono e pōmaikaʻi piha ai mai PAR, PPF, a me PPFD.
No ka 'ike hou aku:
ʻEpekema Māmā
info@lightsciencetech.com
www.lightsciencetech.com