多花黑麦草与大豆秸秆混合青贮发酵品质的研究  

A study on fermentation quality of Italian ryegrass and soybean straw mixed silage

作　　者：闫艳红[1] 李君临[1] 郭旭生[2] 玉柱[3] 张新全[1] 孙娟娟[4] 罗燕[1] 

机构地区：[1]四川农业大学动物科技学院,四川雅安625014 [2]兰州大学草地农业生态系统国家重点实验室,甘肃兰州730020 [3]中国农业大学草地研究所,北京100193 [4]中国农业科学院草原研究所,内蒙古呼和浩特010010

出　　处：《草业学报》2014年第4期94-99,共6页Acta Prataculturae Sinica

基　　金：现代农业产业技术体系建设专项(CARS-35-05);公益性行业(农业)科研专项(201303061);春晖计划项目(Z2012033)资助

摘　　要：本研究旨在将多花黑麦草与大豆秸秆以不同比例混合青贮,评价其发酵品质,筛选出适宜的混合比例。试验设多花黑麦草与大豆秸秆的混合比例为10∶0(对照组)、9∶1(S1)、8∶2(S2)、7∶3(S3)和6∶4(S4)5个处理。青贮42d后打开青贮桶,测定青贮饲料的发酵品质。结果表明,多花黑麦草与大豆秸秆混合青贮显著提高了干物质含量,降低了挥发性脂肪酸含量和氨态氮/总氮的值,其中S2和S3处理的丁酸和氨态氮/总氮值最低。V-Score评分显示各混贮组的V-Score得分均高于对照组,其中S2和S3处理的发酵品质为优等,而对照组的发酵品质为不良。从发酵品质和秸秆利用最大化的角度出发,建议将多花黑麦草和大豆秸秆以7∶3的比例混合青贮较为适宜。The mixed fermentation quality of Italian ryegrass（Lolium multiflorum）and soybean（Glycine max）straw was studied through the following proportions of 10∶0（Control）,9∶1（S1）,8∶2（S2）,7∶3（S3）and 6∶4（S4）.The silos for each mixture were opened on 42 dafter ensiling and the fermentation quality was measured.The results showed that the dry matter content was increased significantly,but the NH3-N to total nitrogen（TN）ratio and the content of volatile fatty acids were significantly decreased by adding soybean straw.The butyric acid content and NH3-N to TN ratio were decreased markedly in the treatment of S2 and S3.The V-Scores were higher as compared with the control,S2 and S3treatment indicated good fermentation quality.It was suggested that the 7∶3mixed proportions of Italian ryegrass and soybean straw was best for improving fermentation quality and maximum using soybean straw.

关 键 词：多花黑麦草 大豆秸秆 混合青贮 发酵品质 

分 类 号：S816.53[农业科学—饲料科学]