凋萎程度与复合添加剂处理对多花黑麦草青贮品质的影响

以孕穗期多花黑麦草为材料,研究凋萎程度与复合添加剂处理对多花黑麦草青贮品质的影响。凋萎程度以含水量表示,试验设6个处理,在含水量分别为80%、73%、64%的条件下青贮及添加复合青贮剂青贮。结果表明:①在水分含量为80%的条件下青贮,无论是否添加青贮剂都易产生青贮渗出液,导致青贮失败;②在水分含量为73%的条件下青贮,添加复合青贮剂的青贮效果优于未添加复合青贮剂青贮,青贮品质评定为优级;③在水分含量为64%的条件下青贮,添加复合青贮剂的青贮效果优于未添加复合青贮剂青贮,且在此水分条件下青贮,无论是否添加复合青贮剂,品质都为优级。

Effects of Wilting and Complex Additives on Silage Quality of Italian Ryegrass

In order to find out optimum water content and way for silage fermentation,Italian ryegrass at booting stage was used as material to study its quality during silage through water control and complex additive application.Three levels were set for water contents(80%,73%,and 64%),and two levels(present or absent),for complex additive.When Italian ryegrass was ensilaged with 80% water content,silage effluent was usually produced which could cause silage failure.With water content of 73%,Italian ryegrass with complex additive application was ensilaged better than that without application,and the quality was graded excellent.Ensilaged with water content of 64%,the quality of Italian ryegrass either with or without complex additive was excellent,and the effect of additive application was better than that of non application.