添加尿素或食盐对高丹草青贮品质的影响  

Effects of Adding Urea or Salt on Silage Quality of Sorghum vulgare×S. sudanense

作　　者：薛祝林[1] 宋丽梅[1] 黄必志[2] 

机构地区：[1]云南农业大学草业科学系,云南昆明650201 [2]云南省草地动物科学研究院,云南昆明650212

出　　处：《中国草地学报》2014年第1期75-78,共4页Chinese Journal of Grassland

基　　金：国家肉牛牦牛产业技术体系"国家现代农业产业技术体系建设"(CARS-38);云南农业大学学生科技创新创业行动基金(2013ZK018);正大大学生科技创新行动项目资助

摘　　要：以乐食高丹草（Sorghum vulgare×S.sudanense‘ Everlush’）为原料,研究不同添加剂（尿素、食盐）对高丹草青贮品质和发酵进程的影响.结果表明：青贮30d后,随着尿素添加比例的增加,中性洗涤纤维含量呈下降的趋势;食盐处理与尿素处理呈相似趋势.粗蛋白质含量随尿素添加比例的增加而上升,1.5％尿素处理组粗蛋白质含量最高可达19.00％,显著高于其他各处理（P＜0.05）,对照组的粗蛋白质含量最低.综合考虑所有指标,尿素的最适添加比例为0.5％～1％,食盐以添加0.6％～0.8％为宜.Sorghum vulgare × S. sudanense cv.＇Everlush＇ was used as raw materials and the effects of different additives （urea, salt） on silage quality and fermentation process of Sorghum-Sudangrass were studied. The results showed that after 30days, there was a downward trend in the content of neutral deter- gent fiber under adding higher ratio urea treatments. Salt treatment groups were similar to the former trend. Content of crude protein in 1.5% urea group was the highest（19.00%）, significantly higher than other groups （P 〈 0.05）, While control group had was 0.5%-1% of urea as well as 0.6%-0.8% of sal Key words. Sorghum vulgate ×S. sudanense; the lowest content. The optimum adding proportion t based on comprehensive consideration of all indicators. Silage; Additive; Quality

关 键 词：高丹草 青贮 添加剂 品质 

分 类 号：S544[农业科学—作物学] S816