Figure 1

Grain yield in two hybrid rice cultivars, Y-liangyou 1 (A,B) and Luoyou 9348 (C,D), as affected by combinations of hill density and N rate under low-light conditions in 2014 (A,C) and 2015 (B,D). Data describing grain yield (ordinate) are separated by the LSD (0.05) value (the least significant difference at the 0.05 probability level) and color coded. * and ** denote significant relationships between grain yield (y) with hill density (x) and N rate (z) at the 0.05 and 0.01 probability levels, respectively.