兰州地区牧草引种试验研究

Growth analysis and herbage yield of certain forage species in Lanzhou region

通过调查牧草生育期、产草量、株高、生长速度等生育指标 ,对国内外 37份 (豆科 6个种 ,共 12个品种 ;禾本科 14个种 ,共 2 5个品种 )牧草进行引种试验研究。结果表明 :干物质产量较高且适应性强的豆科牧草为 Qingyang紫花苜蓿、Rajah和 Vesna红三叶、鹰嘴紫云英、鹰嘴豆等 5种 (品种 )牧草。禾本科中表现较好的一年生牧草为大黍草 ,多年生牧草干物质产量自高向低依次为 L aura牛尾草、Gansu和 Amb鸭茅、Gondolin和 Bcho紫羊茅、Bilbo猫尾草、Qinghai牛尾草、Manding苇状羊茅、Gondolin紫羊茅、Gansu猫尾草、狼尾草、布顿大麦等。

The need to increase forage production for the growing livestock population in Gansu province necessitates the evaluation of various promising forage species with respect to maximum herbage yield and adaptation. Twelve varieties of six forage legumes and twenty five varieties of fourteen forage grasses were compared respectively. For each sample, phenology, total dry matter yield, plant height and growth rate were recorded. Medicago sativa cv. Qingyang, Trifolium pretense cv. Rajah and Vesna, Astragalus cicer and Cicer arietinum attained high dry matter yield and better adaptation. Panicum maximum showed the highest dry matter yield among tested annual forage grasses. In sequence of dry matter yield from high to low, perennial forage grasses were arranged by Festuca pratensis cv. Laura, Dactylis glomerata cv. Gansu and Amb, F.rubra cv, Gondolin and Bcho, Phlenum pretensis cv. Bilbo, F.arundinacea cv. Manding, Festuca pratensis cv. Qinghai, Phlenum pretensis cv. Gansu, Pennisetum iopecuroides and Hordeum bogdanii.