To determine the effect of wide plant spacing on yield formation of hybrid rice in southern China, a field experiment was conducted in Wuzhou, Guangxi Province in late rice-growing season in 2010. Grain yield, yield components and biomass production of two hybrid rice cultivars (Liangyoupeijiu and II-you 602) were compared between wide (20 x 27 cm) and normal plant spacings (16 x 23 cm). Wide plant spacing produced 10% lower grain yield than normal plant spacing for Liangyoupeijiu, while for II-you 602 the difference was consistent but not significant. For Liangyoupeijiu, wide plant spacing ha...
