Yield Analysis of Approved Rice Varieties in Guangxi from 2008 to 2014

[Objective]In order to more fully grasp the yield of approved rice varieties in Guangxi from 2008 to 2014.[Method]The basic situation,annual yield,yield of rice various types,the relationship of yield with growth period and plant height of the approved rice varieties in Guangxi from 2008 to 2014 were compared and analyzed in this paper. [Result] The yield potential of Guangxi hybrid rice has no breakthrough,which was still hovering in 7 500 kg / hm2,the conventional yield decreased greatly from 2012 to 2014. [Conclusion]We should take the high- yielding hybrid rice breeding as a long- term objective in future,and continue to strengthen the conventional rice breeding.