photon flux density

基本解釋

The total photosynthetic photon flux density above and below canopy has a significant diurnal and seasonal changes and the changes of the upper and lower canopy are consistent.
冠層上方和下方總的光合光量子通量密度具有明顯的日變化和季節(jié)變化，并且冠層上下變化規(guī)律一致。
Diurnal change of net photosynthesis rate(NPR) in Xinjiang cotton fields with high yield had one peak value appearing at 14:00. NPR was positive correlation with photosynthetic photon flux density.
高產(chǎn)棉田凈光合效率日變化有1個(gè)明顯的峰值，出現(xiàn)在14：00，它與光合光量子通量密度呈線性正相關(guān)。