草甸草原区引种禾本科牧草生产力适应性评价

Introduced Grass Adaptability Evaluation in meadow steppe

本试验在内蒙古草甸草原区对11种引进和收集的禾本科牧草进行了引种试验,试验采用随机区组设计,通过连续2年的枝条数和生产力的测定,初步评价了各种牧草在草甸草原的适应性。研究结果表明:11种禾本科牧草在两年内的分支数都有明显变化。平均枝条数最高的是直穗鹅观草,两年的平均分枝数达到每株175个,最低的是猫尾草,两年的平均分枝数为33个,其它品种间差异不显著(P>0.05);牧草生产力水平由高到低分别为:蒙古冰草>直穗鹅观草>诺丹冰草>老芒麦>无芒雀麦signal>缘毛雀麦>蒙农杂种冰草>新麦草>羊草>无芒雀麦>猫尾草。因此,在内蒙古草甸草原地区,蒙古冰草和直穗鹅观草具有较好的适应性,可以用来建植人工草地,提高牧草产量,促进畜牧业的可持续发展。

The experiment was conducted on introduced 11 grass in meadow steppe in InnerMongolia,The design of random group was adopted in the experiment. Through 2 consecutive years of branchesand productivity measurement, adaptability was evaluated preliminary. The results showed that： The highest number of draw branches is Roegneria turczaninovii （Drob.） Nevski, two years the average number of branches have reached per plant 175 and the lowest is Uraria crinita （L.） Desv. ex DC Climax, two years the average number of branches to 33. The difference was not significant among other varieties（P〉 0.05）. Forage productivity levels were from high to low is that ： Agropyron mongolicum Keng 〉 Roegneria turczaninovii （D rob. ） Nevski 〉 agropyron nordan 〉 Elymus sibiricus Linn 〉 Bromus inermisSignal 〉 BromusciliatusL. cv. Xilinguole 〉 A. cristatumXA, desertorumHycrest -- Mengnong 〉 Psathyrostachys 〉 juncea （ Fisch. ） Nevski Leymus chinensis（Trin. ） Tzvel. 〉Uraria crinita （L. ） Desv. ex DC Climax. Therefore, Agropyron mongolicum Keng and Roegneria turczaninovii （Drob.） Nevski have good adaptability, could be used to improve local forage varieties,increase forage yield,and promote the sustainable development of local animal husbandry.