关键词: 饲用燕麦, 生产性能, 营养品质, 综合评价

Abstract: In arid and semi-arid areas, 17 forage oat varieties were used as the indicators of strain height, hay yield and nutritional traits for three consecutive years, and using near-infrared spectroscopy technology, dry substances, acidic washing fibers, neutral washing fibers and soluble sugars were determined and analyzed. Finally, comprehensive evaluation was performed using grey correlation analysis. The results showed that：① Qingyin 2 had only 86 d of fertility, while Lena, Sharp and Dingyan 2 were all 105 d. ② Up to the milking stage, the plant heights of Dingyan 2 was the highest. The plant heights of Baiyan 19, Quebec, KONA and Zaoshu 1 among the tested varieties were all below 90 cm in the milking stage. ③ Up to the milking stage, the means hay yield of Sweet oat 2 increased rapidly and higher output. ④ The results of nutritional composition analysis of each variety showed that the dry matter content of the tested varieties in three different growth stages was above 90% (except for Lena); the content of acid detergent fiber and neutral detergent fiber varied in different varieties; the content of soluble sugar content was significantly different among the varieties at the flowering stage. ⑤ Among the 17 oat varieties, Dingyan 2 had the longest main spike length, KONA had the most panicles. Quebec varieties had the largest number of grains per ear. The spike grain weight of Baiyan 19 was the highest. The thousand seeds weight of Sweet oat 2 was the highest. The evaluation results showed that Sweet oat 2, Dingyan2, Lena, Quebec, Sweet oat performed excellently, which suggested that the five varieties were suitable to be used in northern Shanxi province.

Key words: forage oats, production performance, nutritional quality, comprehensive evaluation