晾干及青贮时间对高水分多花黑麦草青贮效果的影响研究  

Effect of Drying and Silage Time on Fresh Italian Ryegrass Silage

作　　者：贾戌禹 程俊康[1] 辛国荣[1] 朱碧岩[2] 王宇涛[2] 陈卫国 JIA Xu-yu;CHENG Jun-kang;XIN Guo-rong;ZHU Bi-yan;WANG Yu-tao;CHEN Wei-guo(State Key Laboratory of Biocontrol and Guangdong Provincial Key Laboratory of Plant Resources,School of Life Sciences,School of Agriculture,Sun Yat-sen University,Guangzhou 510275,China;School of Life Sciences,South China Normal University,Guangzhou 510631,China;Lianzhou Dongli Planting,Farming Industrial Co.,Ltd.,Lianzhou 513400,C hina)

机构地区：[1]广东省热带亚热带植物资源与利用重点实验室,中山大学生命科学学院,广东广州510275 [2]华南师范大学生命科学学院,广东广州510631 [3]广东省连州市东篱种养实业有限公司,广东连州513400

出　　处：《草学》2019年第6期13-19,共7页Journal of Grassland and Forage Science

基　　金：公益性行业(农业)科研专项经费项目(20150122-15);“扬帆计划”引进创新创业团队专项(2015YT02H032)”共同资助

摘　　要：本试验旨在探究不同晾干及青贮时间对多花黑麦草青贮品质的影响,以确定高水分多花黑麦草青贮的适宜方式。分别在黑麦草刈割当天,晾干1、2、3d后,对其进行30、40、50d的袋装青贮,然后从发酵产物方面分析不同处理的青贮品质。结果表明:通过晾干处理可以降低黑麦草的含水量,提高黑麦草的青贮成功率和青贮品质。通过晾干处理3d后将多花黑麦草含水量降至80%左右再进行袋装青贮40d时青贮品质最佳,p H值为4. 06,乳酸含量达到2. 27%,丁酸含量为0,具有较好的青贮品质。但青贮时间超过40d后会使乳酸含量快速下降,丁酸含量快速上升,导致青贮品质降低。The purpose of this experiment was to explore the silage quality of Italian ryegrass under different drying and silage time,in order to determine the best silage method of Italian ryegrass with high moisture content. On the day of Italian ryegrass cutting and drying for1,2 and 3 days,bagged silage for 30,40 and 50 days,and then the quality of silage under different treatments was analyzed from fermentation products. The results showed that the water content of ryegrass could be reduced by drying,and the silage success rate and quality of ryegrass could be improved. When the moisture content of Italian ryegrass was reduced to about 80% after three days of drying and then bagged silage for 40 days,the silage quality was the best. The p H value was 4. 06,the lactic acid content was 2. 27%,and the butyric acid content was 0. However,after more than 40 days of silage,the lactic acid content decreased rapidly and the butyric acid content increased rapidly,which leads to the decrease of silage quality.

关 键 词：多花黑麦草 青贮 青贮品质 青贮时间 

分 类 号：S816.53[农业科学—饲料科学]