Abstract:In order to select the forage of high yield,good quality and suitable for popularization in dry farming area,Oat(Avena sativa L.),the productivity and nutrient composition of 3 introduced varieties of Avena sativa L.were determined.The relationship between 12 agronomic traits of 3 varieties was evaluated by factor analysis,and variance analysis was performed for the common nutrient components of different varieties.The results showed that the comprehensive score of Fuyan No.1 was 5.626,ranking first.The “ash” of the three varieties was significantly different(P<0.05).The results of multiple comparisons showed that there were significant differences between “nonfiber freshwater compounds”,“total digestible nutrients” and “monosaccharides” between Tianyan 1 and Fuyan 1(P<0.05),but no significant differences among the other three indexes (P>0.05).