留茬高度对全株大麦青贮品质的影响  

Effects of Stubble Height on Silage Quality of Whole Barley

作　　者：张腾薇 吕二锁 刘志萍 包文龙 段俊杰[1] 云颖 张霞 韩磊 孙娟娟[1] ZHANG Teng-wei;LV Er-suo;LIU Zhi-ping;BAO Wen-long;DUAN Jun-jie;YUN Ying;ZHANG Xia;HAN Lei;SUN Juan-juan(Institute of Grassland Research of Chinese Academy of Agricultural Sciences/Inner Mongolia Academy of Grassland Science,Hohhot 010010,China;Inner Mongolia Academy Agricultural and Animal Husbandry Sciences,Hohhot 010031,China;College of Grassland,Resources and Environment,Inner Mongolia Agricultural University,Hohhot 010011,China)

机构地区：[1]中国农业科学院草原研究所/内蒙古草业与草原研究院,内蒙古呼和浩特010010 [2]内蒙古自治区农牧业科学院,内蒙古呼和浩特010031 [3]内蒙古农业大学草原与资源环境学院,内蒙古呼和浩特010011

出　　处：《中国草地学报》2022年第7期87-92,共6页Chinese Journal of Grassland

基　　金：内蒙古自治区科技计划项目“优质、丰产饲草大麦新品种选育及应用”(2020GG0059);内蒙古自治区科技计划项目“优质大麦青贮调制技术研发与应用”(2021GG0068)。

摘　　要：为探究留茬高度对全株大麦青贮品质的影响,在乳熟后期-蜡熟初期刈割大麦并进行青贮。设齐地刈割及留茬10cm两个处理,真空袋青贮40d后比较不同留茬高度大麦青贮前后的营养品质、微生物数量及青贮饲料的发酵品质,每处理3次重复。结果表明:大麦留茬10cm处理原料及青贮较齐地刈割处理粗蛋白、可溶性碳水化合物含量高,粗灰分含量低;与齐地刈割处理相比,留茬10cm大麦青贮处理乳酸菌含量显著提高(P<0.05),好氧细菌数量、pH值、丁酸含量以及氨态氮/总氮比例显著下降(P<0.05),Kaiser评分增加,大麦发酵品质提高;综上,大麦采用留茬10cm刈割可以改善大麦原料及青贮的营养品质。This study aimed to investigate the effect of stubble height on silage quality of whole barley(Hordeum vulgare L.),which was harvested at late milk to soft dough stages of maturity.Two treatments of 0cm stubble and 10cm stubble were set,and each treatment was repeated for 3 times.After 40 days of vacuum packaging silage,the effects of different stubble heights on the nutrition quality and microbial quantity of barley materials and silage,barely silage fermentation quality was compared.The results showed that the raw materials and silage treated with 10cm stubble had higher crude protein(CP)and water soluble carbohydrate(WSC)content,and lower ash content than those treated with 0cm stubble.Compared with 0cm stubble treatment,the content of lactic acid bacteria in 10cm stubble silage treatment was significantly increased(P<0.05),the number of aerobic bacteria,pH value,butyric acid content and ammonia nitrogen/total nitrogen ratio were significantly decreased(P<0.05),Kaiser score was increased,and the fermentation quality of barley was improved.In conclusion,cutting with 10cm stubble can improve the nutrient quality of barley raw materials and silage.

关 键 词：大麦 留茬高度 青贮品质 乳酸菌 营养品质 

分 类 号：S816.53[农业科学—饲料科学]