黄土高原西部丘陵区饲用燕麦生产性能和品质.

The study was to identify the suitable feeding oat varieties for planting in the hilly region of western Loess Platea. The experiment carried out the analysis of the yield, quality and other indicators for 13 imported forage oats and Guyuan big oats（CK group） varieties. The results showed that the three-year average of fresh grass yields of Danyan 444,Monte and Qinghai 444 were 21.79%, 25.32% and 28.08% lower than that of CK group, respectively（P<0.05）. The threeyear average hay yield of Danyan 444 and Qinghai 444 were 20.11% and 26.02% lower than CK group, respectively（P<0.05）. The three-year average DM content of Monida, Baylor, Monte, Haiwei, Tianyan 2, Danyan 444, Qinghai 444,Tianyan 1 and Muwang were significantly higher than CK group. CK group had the lowest three-year average of CP content. Monte’s three-year average of NDF content was significantly lower than CK group（P<0.05）, and RFV average was significantly higher than CK group（P<0.05）. The average values of Tianyan 1, Baylor, Tianyan 2 and Haiwei WSC were significantly higher than CK group（P<0.05）. According to quality grading standard of oat hay, 14 varieties were divided into two categories, and there were 13 varieties belonging to type A oat grass. Sweet Yan 2 was the second level,Dan Yan 444, Mu Lesi, Tian Yan 1, Baylor, Muwang, Ota, Qinghai 444, Guyuan Oats, Haiwei, Monte, Monida, Xiyue were the third level. There was one variety belonging to Type B oatgrass, Tianyan No. 1, which was the third grade. The study indicates that after comprehensive evaluation, Tianyan No. 1, Tianyan No. 2 and Baylor varieties are suitable for planting in the hilly region of the western Loess Plateau. [ABSTRACT FROM AUTHOR]