Production Performance of Different Varieties of Oat A vena sativa） in Winter Dry Land of Hunan

摘要

The phenological phase,plant height,tiller number,nutritional composition,yield and stem/leaf ratio of three oat (Avena sativa) varieties (lines)in winter dry land of Hunan were studied.The result shows that the three oat varieties were greatly different in plant height,nutritional composition,yield and stem/leaf ratio.Baiyan 7 had the best performance,with the plant height,tiller number and fresh yield of 101.67 cm,7.6 tiller/plant and 70.15 t/hm^2 respectively; the crude protein content of dry matter of Baiyan 7 was 32.63%; the leaf weight per tiller of Baiyan 7 accounted for 31.6% of single tiller weight,while those of Baiyan 8 and Baiyan 2 accounted for 31.3% and 29.2%,respectively.The single tiller weight of oat could be estimated/calculated by the model/formula Y=0.043 7X-2.89 (R^2=0.913 4,P<0.01),where Y is the single tiller weight (g) and X is the plant height (cm).Comprehensive analysis showed that Baiyan 7 had higher yields and stem/leaf ratio.Thus,Baiyan 7 is more suitable for planting as a winter-spring forage in the winter dry land of Hunan.