摘要
为了探究西藏林芝河谷地带紫花苜蓿(Medicago sativa L.)与高羊茅(Festuca elata Keng ex E.Alexeev)混播对草地产量和牧草品质的影响,以单播为对照,采用随机区组设计,测定了不同茬次牧草的生产性能和营养指标。结果表明:混播干草产量分别达14917.05 kg·hm^(-2),13288.82 kg·hm^(-2)和8729.86 kg·hm^(-2),显著高于单播产量。牧草混播第1至3茬的粗蛋白质含量分别为14.07%,13.62%和20.50%,显著高于单播高羊茅,低于单播紫花苜蓿;平均粗脂肪含量达2.24%,显著高于单播处理。牧草干重与粗纤维含量呈极显著正相关,与粗脂肪含量呈显著正相关关系,与粗蛋白质含量呈显著负相关关系。不同处理(茬次)灰色关联度综合评价排序结果为A3>B3>C1>A1>A2>B2>B1>C2>C3。2种牧草混播具有一定的优势,可在林芝河谷地带广泛栽培推广和利用。
In order to explore the effects of mixed sowing of Medicago sativa L.and Festuca elata Keng ex E.Alexeev on grassland yield and forage quality in Nyingchi Valley of Tibet.Using single sowing as control,the production performance and nutritional indexes of different stubble times were measured by random block design.The results showed that the species mixtures significantly increased hay the yield with 14917.05 kg·hm^(-2),13288.82 kg·hm^(-2),and 8729.86 kg·hm^(-2) in different plant species mixtures,respectively.The crude protein contents were 14.07%,13.62%,and 20.50%at the first to the third harvest in mixed cropping of forage grass,respectively.Single sowing of Medicago sativa L.has higher crude protein content than that of Festuca elata Keng ex E.Alexeev.Moreover,species mixtures significantly increased crude fat content.The dry weight of herbage positively correlated with crude fiber content and crude fat content,but negatively correlated with crude protein content.The degree of high-quality forage in different treatments ranked A3>B3>C1>A1>A2>B2>B1>C2>C3.Our finding highlights that the plant mixtures have pronounced advantages in forage yield,which should be widely promoted and used in Tibet valley regions.
作者
王明涛
赵玉红
苗彦军
马素洁
孙磊
徐雅梅
包赛很那
周龙
WANG Ming-tao;ZHAO Yu-hong;MIAO Yan-jun;MA Su-jie;SUN Lei;XU Ya-mei;BAO SAI Hen-na;ZHOU Long(Research Institute of Tibet Plateau Ecology,Tibet Agriculture and Animal Husbandry University,Linzhi,Tibet 860000,China;Animal Science College,Tibet Agriculture and Animal Husbandry University,Linzhi,Tibet 860000,China;College of Electrical Engineering,Tibet Agriculture and Animal Husbandry University,Linzhi,Tibet 860000,China)
出处
《草地学报》
CAS
CSCD
北大核心
2022年第6期1590-1596,共7页
Acta Agrestia Sinica
基金
西藏自治区厅校联合基金-饲用品质(XZ202101ZR0017G)
国家自然基金(31860151)
西藏高寒优良牧草种质资源选育实验平台建设(藏财预指2020-001号)
西藏自治区重大专项(XZ202101ZD005 N)资助。
关键词
混播
牧草
营养品质
相关分析
综合评价
Mixculture
Forage
Nutritional quality
Correlation analysis
Comprehensive evaluation