Abstract: In this study,a comparative trial was carried out using the spring sowing and summer sowing varieties of nine silage maize for feeding,including Zhengdan958,Guidan 0810,Guidan 162,Zhaofeng 588,Zhaofeng 788,Guidan 0811,Yaoqing No.5,Qingsi No.2 and Suyu No.10,as experimental materials to compare their plant seedling rate,botanical characteristics and biological yield.The results showed that Yaoqing No.5 exhibited higher plant height and performed better in content of air-dried matter and biological yield.The fresh grass yield of spring sowing and summer sowing varieties of Yaoqing No.5 was 4 604.52 kg/666.7 m^2 and 4 987.55 kg/666.7 m^2,respectively,which was increased by 24.89%and 47.08%than that of Zhengdan 958,respectively.It was indicated that Yaoqing No.5 could be widely popularized in Guangxi.