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草业学报 ›› 2014, Vol. 23 ›› Issue (4): 94-99.DOI: 10.11686/cyxb20140411

• 研究论文 • 上一篇    下一篇

多花黑麦草与大豆秸秆混合青贮发酵品质的研究

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   

  1. 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
  • 收稿日期:2014-01-09 出版日期:2014-08-20 发布日期:2014-08-20
  • 通讯作者: E-mail:zhangxq@sicau.edu.cn
  • 作者简介:闫艳红(1981-),女,山西交城人,副教授,博士。E-mail:yanyanhong3588284@126.com
  • 基金资助:
    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)和春晖计划项目(Z2012033)资助

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

YAN Yan-hong1,LI Jun-lin1,GUO Xu-sheng2,YU Zhu3,ZHANG Xin-quan1,SUN Juan-juan4,LUO Yan1   

  1. 1.Department of Grassland Science,Sichuan Agriculture University,Ya’an 625014,China;
    2.State Key Laboratory of Grassland Agro-ecosystems,Lanzhou University,Lanzhou 730020,China;
    3.Institute of Grassland Science,China Agricultural University,Beijing 100193,China;
    4.Grassland Research Institute of Chinese Academy of Agricultural Sciences,Huhhot 010010,China
  • Received:2014-01-09 Online:2014-08-20 Published:2014-08-20

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42 d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。

Abstract: 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 d after 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 S3 treatment indicated good fermentation quality. It was suggested that the 7∶3 mixed proportions of Italian ryegrass and soybean straw was best for improving fermentation quality and maximum using soybean straw.

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