草业学报2012，Vol.21Issue(4)：325-330,6.
西藏青稞秸秆与多年生黑麦草混合青贮发酵品质的研究
A study on fermentation quality of mixed silages of hulless barley straw and perennial ryegrass in Tibet
摘要
Abstract
The fermentation quality of mixed silages of hulless barley (Hordeum vulgare) straw and perennial ryegrass (Lolium perenne) was studied using the following treatments: control (100% hulless barley straw), L (80% hulless barley straw+20% perennial ryegrass), M (60% hulless barley straw+ 40% perennial ryegrass) and H (40% hulless barley straw+60% perennial ryegrass). The laboratory silos were opened on 7, 14 and 30 days after ensiling in triplicate and the fermentation quality was measured. The mixed silages significantly (P<0. 05) increased lactic acid and water soluble carbohydrate contents, while significantly (P<0. 05) reducing pH value and dry matter content. Acetic acid content was significantly (P<0. 05) increased with an increase of perennial ryegrass in mixed silages. The ammonia/total nitrogen of mixed silages was lower (P> 0. 05) than that of the control. There was little butyric or propionic acids in all silages. Based on these results, mixed silage of 40% perennial ryegrass was best for improving the fermentation quality of hulless barley straw.关键词
青稞秸秆/多年生黑麦草/混合青贮/发酵品质Key words
hulless barley straw/perennial ryegrass/mixed ensilage/fermentation quality分类
农业科技引用本文复制引用
原现军,余成群,李志华,下条雅敬,邵涛..西藏青稞秸秆与多年生黑麦草混合青贮发酵品质的研究[J].草业学报,2012,21(4):325-330,6.基金项目
国家科技支撑计划藏北退化草地综合整治技术与示范(2010BAE00739-03)和西藏主要农作物秸秆与栽培牧草混合青贮关键技术研究(XZ20093ZD)资助. （2010BAE00739-03）
