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“优质牧草引种试验”是西藏自治区科技厅继粮食作物品种引种取得成效的基础上 ,抓的又一项重中之重的科技攻关项目。项目经过 1 998～ 2 0 0 1年四年的实施 ,共进行了从国内外引进的 1 5 7份牧草品种和 1 5份草坪草的试验。试验根据生态条件划分为两个类型、四个点 ,即高寒牧区类型的那曲、当雄点和高寒河谷农区类型的畜牧兽医研究所曲尼巴综合基地、中科院达孜生态站。各试验点通过对引进品种的物候期、生物量、农艺性状及越冬率的观测 ,筛选出适宜在不同地区种植的优良牧草品种 2 9份 ,其中按习性、科属分为 :一年生禾本科牧草 6份 ,多年生禾本科牧草 1 4份 ,一年生豆科牧草 2份 ,多年生豆科牧草 5份 ,其它科属的牧草 1份 ;按生态类型分为 :适宜在高寒河谷农区种植的禾本科牧草1 3份 ,豆科牧草 3份 ,其它科属的一种 ;适宜在高寒牧区种植的禾本科牧草品种1 0份 ,豆科牧草品种 6份。试验结果表明 :燕麦草类、黑麦草类、羊茅类、梯牧草类、冰草和鲁梅克斯K— 1杂交酸膜在西藏河谷地区 (海拔 380 0米 )均能收获到成熟的种子。区间试验显示 ,区试品种在高寒牧区和高寒河谷农区均能获得较高的生物量 ,在生产上推广应用前景十分广阔
“Introduction of high-quality forage test” is the Tibet Autonomous Region Science and Technology Agency following the introduction of varieties of grain crops to achieve success, based on grasping another top priority of scientific and technological projects. After the implementation of the project for four years from 1998 to 2001, a total of 157 trials of forage grass and 15 lawn introduced from home and abroad were conducted. According to the ecological conditions, the experiment was divided into two types and four points, namely, Nagqu, Dangdang Point and the Alpine Valley Animal Husbandry and Veterinary Research Institute Quinamba integrated base in the alpine pastoral area type and the Dazi Ecology Station of the Chinese Academy of Sciences. According to the observation of the phenophase, biomass, agronomic traits and overwintering rates of imported varieties, 29 test plants were selected for their excellent forage cultivars planted in different regions. Among them, habitats and families were divided into three groups: annual grass 6 copies, perennial grass 14 copies, annual leguminous pasture 2 copies, perennial legumes 5 copies, other families of forage 1; according to ecological type is divided into: suitable for planting in the alpine valley agricultural grass 13 parts of leguminosae, 3 parts of leguminosae and 1 species of other genera; 10 parts of gramineous forage species and 6 legume forage species suitable for planting in the alpine pastoral area. The results showed that oatgrass, ryegrass, fescue, timothy grass, Agropyron chinense and Rumex K-1 hybrid acid film were able to harvest mature seeds in the Tibetan valley area (380 0 m) . Interval tests showed that the high yield of biomass could be obtained from the test varieties in the alpine pastoral areas and the alpine valley agricultural areas,