西藏高海拔河谷农区不同秋眠型苜蓿品种适应性研究  

Study on Adaptability of Different Fall-dormancy Grade Alfalfa Varieties in High Altitude Valley Agricultural Area of Tibet

作　　者：李锦华[1] 朱新强[1] 余成群[2] 孙维[2] 王晓力[1] 张茜[1] 钟志明[2] 吴芳 LI Jinhua;ZHU Xinqiang;YU Chengqun;SUN Wei;WANG Xiaoli;ZHANG Qian;ZHONG Zhiming;WU Fang(Lanzhou Institute of Husbandry and Pharmaceutical Sciences,Chinese Academy of Agricultural Sciences,Lanzhou730050,China;Institute of Geographic Sciences and Natural Resources Research,Chinese Academy of Sciences,Beijing100101,China)

机构地区：[1]中国农业科学院兰州畜牧与兽药研究所,兰州730050 [2]中国科学院地理科学与资源研究所,北京100101

出　　处：《中国草食动物科学》2023年第3期27-31,36,共6页China Herbivore Science

基　　金：西藏自治区科技计划重大草业专项(XZ202101ZD003N);科技创新2030农业生物育种重大项目(2022ZD04011);中国农业科学院科技创新工程(25-LZIHPS-B02)。

摘　　要：苜蓿秋眠级是评判苜蓿品种抗寒性和适应性的指标之一。西藏种植面积最大的多年生豆科牧草主要是苜蓿,推广品种选择中一般对其抗寒性和生产性能的关注度较高。为评价不同秋眠型苜蓿在西藏高海拔河谷农区的适应性,在海拔4000 m以下的拉萨达孜区和日喀则拉孜县,比较了秋眠级1~11的11个品种的种植效果。结果表明,供试品种均可安全越冬,小区域气象条件相对适宜的情况下能够结荚成熟,品种的秋眠级高低与其生产性能间没有规律性的变化关系。可以得出结论,在西藏海拔4000 m以下的河谷农区种植苜蓿时,品种的抗寒性不是必须优先选择的指标。The fall dormancy grade of alfalfa is one of the indexes to evaluate the cold resistance and adaptability of alfalfa varieties.Alfalfa is the most widely planted perennial legume in Tibet,and its cold resistance and producation ability are generally paid more attention to in the selection of popularized varieties.To evaluate the adaptability of different fall-dormancy alfalfa varieties in high altitude valley agricultural areas in Tibet,in Dazi district of Lhasa and Lazi county of Shigatse located altitude below 4000 m,planting effect of 11 alfalfa varieties with 1-11 fall-dormancy grade were compared.The results showed that the tested varieties could safely survive during the winter,as well as mature pod setting under relatively suitable meteorological conditions in small areas.There was no regular change relationship between fall-dormancy grade and forage performance.It can be concluded that the cold resistance of alfalfa cultivar is not a priority when it is planted in the valley farming area of Tibet with an altitude below 4000 m.

关 键 词：西藏 河谷农区 苜蓿 秋眠性 适应性 

分 类 号：S54[农业科学—作物学]