西藏河谷农区披碱草属牧草农艺性状与品质比较试验  

Variety Comparison Experiment of Elymus Species in River Rural Valley of Tibet

作　　者：周娟娟 ZHOU Juanjuan(State Key Laboratory of Highland Barley and Yak Germplasm Resources and Genetic Improvement,Tibet Lhasa 850000,China;Institute of Pratacultural Science,Tibet Academy of Agriculture and Animal Husbandry Science,Tibet Lhasa 850000,China)

机构地区：[1]省部共建青稞和牦牛种质资源与遗传改良国家重点实验室,西藏拉萨850000 [2]西藏自治区农牧科学院草业科学研究所,西藏拉萨850000

出　　处：《西藏农业科技》2023年第2期52-55,共4页Tibet Journal of Agricultural Sciences

基　　金：西藏自治区科技计划重大专项(XZ202101ZD0003N)。

摘　　要：研究选取采自西藏的3份野生垂穗披碱草属(Elymus spp.)牧草和栽培品种“青牧1号”老芒麦(Elymus sibiricus L.cv.Qingmu No.1)、同德短芒披碱草(Elymus breviaristatus(Keng)Keng f.cv.Tongde)种质为材料,分析比较其生产性能和营养品质,以期筛选出适应当地的优良乡土牧草种质资源。结果表明:采自海拔4354 m的当雄老芒麦植株高度(95.48 cm)较高,种子产量(20.94 g/m^(2))最高,可作为产籽型牧草选育材料;采自海拔4360 m的当雄垂穗披碱草干草产量(20.94 g/m^(2))显著高于(p<0.05)其他材料,含有较高的CP和较低的ADF,可作为饲草型牧草选育材料;采自海拔4267 m的垂穗披碱草鲜干比较低(3.92),兼具较好的营养品质,有利于刈割后调制干草。In this study,we carried out the variety comparison experiment of three wild Elymus germplasm,Elymus sibiricus L.cv.Qingmu No.1 and Elymus breviaristatus(Keng)Keng f.cv.Tongde(control)for screening out the high-quality native Elymu germplasm resource in Tibet.The result showed that different germplasm had different performace.E.sibiricus at an altitude of 4354 m from Dangxiong county had outstandinng performance with higher plant height(95.48cm)and superior seed yield(20.94 g/m2),which could be forage breeding material with seeds production.The hay yield of E.nutans(20.94 g/m2)at an altitude of 4360 m from Dangxiong county with higher CP and lower ADF was significantly higher than the other resources(P<0.05),which could be forage grass breeding material.E.nutans at an altitude of 4360 m from Biru county also had potential to be hay modulation after cutting with lower fresh/hay weight ratio(3.92)and better nutrition quality performance.

关 键 词：西藏 披碱草属 品种比较 

分 类 号：S431.4[农业科学—农业昆虫与害虫防治]