Figure 1

The linear LED module and its emitting spectrum used for lighting in the study (a). The treatments of top lighting (b), intra-canopy lighting (c) and combination of top and intra-canopy lighting (d).

The linear LED module and its emitting spectrum used for lighting in the study (a). The treatments of top lighting (b), intra-canopy lighting (c) and combination of top and intra-canopy lighting (d).