Nā mea noiʻi ma Kina a me United Kingdom ua aʻo i nā hopena o nā hui kukui LED ma ka letus i ulu i loko o nā ʻōnaehana hydroponic e hoʻoholo ai inā hiki i nā lāʻau lapaʻau ke hōʻemi i ka hōʻiliʻili nitrate, a e ʻike i ka hopena o nā lāʻau lapaʻau i nā pae phytochemical.
"ʻO nā huaʻai, ʻoi aku ka lau lau, i ulu i ka hydroponics hiki ke hōʻiliʻili i nā kiʻekiʻe kiʻekiʻe o ka nitrate a me nā mea ʻino ʻē aʻe," wehewehe ʻo Qi-Chang Yang lāua ʻo Chungui Lu, nā mea kākau like o ka haʻawina i paʻi ʻia ma ka Journal of the American Society for Horticultural Science. "ʻO ka noiʻi mua e pili ana i nā hopena o ka mālamalama mau i ka photosynthesis a me ka ulu ʻana o nā mea kanu i kālele nui ʻia i ka uaki circadian a me ka hōʻeha ʻeha. ʻAʻole i ʻike ʻia e pili ana i ka hopena o ke kukui LED mau i ka pane ʻana o ka ʻōnaehana photosynthetic a me nā hoʻololi ʻana i nā ʻano o nā mea antioxidant a me nā phytochemicals.
Ua hoʻolālā nā mea noiʻi i nā hoʻokolohua me ka kukui mau (CL) a me / a i ʻole ka hui pū ʻana o ka ʻōmaʻomaʻo (G) me ka kukui ʻulaʻula-uliuli (RB) LED e hoʻoholo ai inā hiki i nā lāʻau lapaʻau ke hoʻemi i ka ʻona nitrate a hoʻonui i nā meaʻai i loko o ka lettuce hydroponically. ʻO nā hoʻokolohua i komo i ke kukui LED keʻokeʻo a hui pū ʻia ke kukui ʻulaʻula-uliuli (me ka ʻole o ke kukui LED ʻōmaʻomaʻo) i ʻelima hui.
"Ua hōʻike maopopo kā mākou mau hopena i ka hoʻomau ʻana o ka mālamalama e RB a me RBG LED e hoʻopilikia nui i ka ʻike nitrate o ka letus i ka wā preharvest," wahi a nā mea kākau. "Ua emi loa ka maʻiʻo nitrate ma lalo o ka mālama ʻana o RB-CL a me RBG-CL ma waena o 0 a me 24 mau hola."
Ua hōʻike pū ʻia nā hopena i ʻoi aku ka maikaʻi o ke kukui LED RB ma mua o ke kukui LED keʻokeʻo i ka hoʻoikaika ʻana i ka ulu lettuce. "ʻO ke kukui LED mau no nā hola 24 i hoʻonui nui i ka hana scavenging free-radical a me ka hoʻonui ʻana i ka hoʻohuihui phenolic," i ʻōlelo ai nā mea kākau. Manaʻo lākou i nā lāʻau lapaʻau o 24 mau hola RB LED me ka ʻike kukui G e hoʻemi i ka ʻike nitrate a hoʻonui i ka maikaʻi lettuce.
E nānā i ka haʻawina piha a me ka abstract ma ka ʻO ka American Society for Horticultural Science pūnaewele puke pai.
Puna: American Society for Horticultural Science