Nyob rau hauv tshav ntuj ncaj qha rau lub caij ntuj sov, lub teeb siv tau ncav cuag 60000 txog 100000 lux.Rau cov qoob loo, lub teeb saturation ntawm cov zaub feem ntau yog 30000 txog 60000 lux.Piv txwv li, lub teeb saturation ntawm kua txob yog 30000 lux, ntawm eggplant yog 40000 lux, thiab cov dib yog 55000 lux.
Lub teeb ntau dhau yuav ua rau muaj kev cuam tshuam zoo rau cov qoob loo photosynthesis, uas ua rau thaiv kev nqus ntawm carbon dioxide, kev ua pa ntau dhau, thiab lwm yam. Qhov no yog li cas qhov tshwm sim ntawm "hnub so" ntawm photosynthesis tshwm sim nyob rau hauv tej yam ntuj tso.
Yog li ntawd, siv shading nets nrog qhov tsim nyog shading tus nqi yuav tsis tsuas yog txo qhov kub nyob rau hauv lub los ntawm tav su, tab sis kuj txhim kho cov photosynthetic efficiency ntawm cov qoob loo, tua ob tug noog nrog ib lub pob zeb.
Xav txog qhov sib txawv ntawm cov teeb pom kev zoo ntawm cov qoob loo thiab qhov xav tau los tswj qhov kub thiab txias, peb yuav tsum xaiv cov shading net nrog qhov tsim nyog shading tus nqi.Peb yuav tsum tsis txhob greedy rau pheej yig thiab xaiv ntawm yuav.
Rau cov kua txob uas tsis tshua muaj lub teeb saturation point, shading net nrog siab shading tus nqi yuav raug xaiv, piv txwv li, shading tus nqi yog 50% ~ 70%, thiaj li yuav xyuas kom meej tias lub teeb siv nyob rau hauv lub tsev yog hais txog 30000 lux;Rau cov qoob loo nrog siab isochromatic saturation point ntawm dib, shading net nrog tsawg shading tus nqi yuav tsum tau xaiv, piv txwv li, shading tus nqi yuav tsum yog 35 ~ 50% kom ntseeg tau tias lub teeb siv nyob rau hauv lub tsev yog 50000 lux.