Abstract:In order to screen the silage corn varieties suitable for planting in the rain-fed area of Ningxia,this experiment comprehensively evaluated the agronomic characteristics and chemical components of eight introduced silage corn varieties using a random block design.The results showed that there were significant differences in plant height,ear height,stem diameter,leaf number,fresh grass yield,dry matter,crude ash,crude protein,crude fat and starch content among eight silage corn varieties(P<0.05).Among all varieties,the biological yields of Zhongyu 335 and Ningdan 34 were relatively higher with relatively thicker stems;while Zhongyu 335,Zhengda 12 and Ningdan 34 had high quality showing higher crude protein,crude fat and starch content,and lower neutral detergent fiber and acid detergent fiber content though their dry matter was moderate.Comprehensive evaluation of agronomic traits and chemical components showed that Zhongyu 335 and Ningdan 34 had good quality and therefore would be suitable for local promotion.