Rice is the major staple food of China.The realization of its high yield has a great significance for food security and society stability.A field experiment was conducted in Changsha and Liuyang cities of Hunan Province during 2008-2010 to find out a cultivation technique that could increase the yield of double cropping super rice in South China.Super early rice Luliangyou 996 and Lingliangyou 268 and super late rice Tianyouhuazhan and Fengyuanyou 299 were used in early and late season cropping,respectively.The cultivation patterns were designe...