Greenhouse operations are increasingly using LED teeb pom kev zoo. Cov teeb no muab cov neeg cog qoob loo ntau qhov zoo piv rau HPS teeb pom kev zoo ib txwm muaj. Qhov no tso cai rau lawv siv qoob loo - lossis phiaj - cov zaub mov txawv tshwj xeeb.
But how exactly plants react to LED light is often unknown. That is why the Chaw Lag Luam Tsev Tsev cog qoob loo thiab paj qhov muag teev of Wageningen University Research (WUR) in The Netherlands has developed a line sensor that measures which wavelengths a plant absorbs and to what extent, and investigates the consequences of this.
Lub teeb cuam tshuam rau kev loj hlob ntawm cov qoob loo hauv ntau txoj hauv kev. Tus nqi ntawm lub teeb uas nplooj tau txais txiav txim siab photosynthesis thiab yog li kev loj hlob ntawm cov qoob loo. Lub teeb spectrum yog lub luag haujlwm rau kev loj hlob ntawm cov nroj tsuag, xws li qhov zoo thiab elongation ntawm nplooj. Ntxiv rau lub teeb, hluav taws xob kuj muaj cua sov, uas tseem cuam tshuam rau kev loj hlob ntawm cov qoob loo.
Hauv ntau qhov kev hwm no, LED sib txawv ntawm lub hnub ci thiab cov teeb pom kev zoo. Ntxiv mus, LED tuaj yeem siv los ntawm cov neeg cog qoob loo hauv txoj kev tshiab: lub teeb tuaj yeem hloov tau txhua lub sijhawm, thiab muaj txoj haujlwm sib txawv ntawm cov qoob loo.
Tab sis qhov cuam tshuam ntawm cov kev hloov no tsis paub. Qhov twg ntawm lub teeb spectrum raug ntes los ntawm nplooj? Piv txwv li, tsob ntoo ua li cas nrog UV lossis deb - lub teeb liab? Thiab dab tsi cuam tshuam qhov tsis muaj hluav taws xob hluav taws xob los ntawm lub teeb pom kev zoo? Muaj cov sensors rau ntsuas lub teeb, tab sis cov sensors ua li ntawd -hu ua taw tes ntsuas lossis tsis koom ua ke dhau ntawm ib qho tshwj xeeb spectral.
That is why WUR developed a spectral line sensor that can be placed in and under the crop, and thus measure during different times which wavelengths are captured and to what extent. It is important to determine the crop reactions and to assess how the spectra affect the crop. The WUR is currently working on a follow-up to the developed prototype, which is expected to be ready in April 2022. The project, "Insight into sunlight and LED light," is financed by the Ministry of Agriculture, Nature and Food Quality in the Netherlands within the program Kas als Energiebron, in collaboration with SpectraPartners and JETI.
