This research wre carried out at Duoying farm of Sichuan Agriculture University during the year of 2004 and 2005. The experiment materials were several new type forage maize combinations, which were bred by distant hybridization between maize and teosintes. It includes two aspects: (1) Studies on yield and forage nutritive value of four forage maize combinations in 2004 year, and selected an excellent hybrid which was named SAUMZ1; (2) Studies on biological characteristic, matter accumulating and dynamic va...