Screening out the suitable oat varieties in the alpine and high-altitude areas(Dari County)can provide the technological support for the construction of alpine forage bases.7 oat varieties were chose as the re-search subjects and plant height,crown,leaf traits,yield,quality were tested,then a comprehensive comparison of their production performance were conducted to screen the suitable varieties.The results showed that:the sweet oat(TYM)had the largest plant height of 117.11 cm,which differed significantly from the other varieties;the crown width of Baiyan 7(BY)was 32 cm,which was significantly higher than that of the other oat varieties except for Qingyin 2(QY2);BY had the largest leaf length and thickness,which were 48 cm and 0.56 mm,respective-ly.The difference of between the BY and the other varieties was significant.Qingtian sweet No.1(QTI)had the widest leaf width,which was significantly higher than that of Jiayan(JY1)and Linna(LN).but there was no sig-nificant difference between QTI and the other varieties.QY2 and BY had the highest fresh grass yields,with signif-icant 93.7%increase production compared to QT1.TYM had the highest hay yield of 7 380 kg·hm-2.TYM,BY,TYM,BY,and QY2 had significantly higher crude protein and crude fat contents in stems and leaves.There was significantly positive correlation between crown width and leaf length for the fresh hay yield,and was signifi-cantly positive correlation between crown width for all varieties of oats.When choosing the oats varieties to build a forage base,the Qingyin No.2,Baiyan No.7 and sweet oats which have the higher forage yields should be recom-mended in Dari County.
NETL
NSTL
维普
万方数据
