【摘要】 [目的]对国内外苜蓿品种的生长特性进行研究,为引进优良的苜蓿品种提供科学的指导。[方法]选用国内外17个苜蓿品种,通过3年的品比试验,对各品种生物学特性、株高、枝条密度、鲜草产量和叶茎比等性状进行了田间测定与统计分析。[结果]2006～2008年间,供试苜蓿品种均能安全越冬,且可完成整个生长繁殖周期。国内育成苜蓿品种单株产草量最高,植株高大,分枝能力较差,叶茎比值较低。欧洲苜蓿品种具有较强的分枝能力,美国苜蓿品种叶量最高。[结论]国内品种生产性能优越,而国外品种质量优势明显。更多还原

【Abstract】 [Objective] To explore the growth characteristics of domestic and overseas alfalfa varieties,and provide scientific guidance for the introduction of superior alfalfa varieties.[Method] All of 17 domestic and overseas alfalfa varieties were selected.Through a three-year comparison of varieties,their biological characteristics,plant height,branch density,fresh forage yield,leaf/stem ratio and other traits were detected,and then the statistical analysis was conducted.[Results] The results were showed that all the tested alfalfa varieties survived in the cold winter from 2006 to 2008,and all had finished their entire cycle of growth and reproduction safely.The grass yield per plant and plant tall of domestic alfalfa varieties were the highest,but their branching ability and the leaf/stem ratio were lower.European alfalfa varieties were with strong branching capability,and the leaves yield of United States alfalfa varieties was the highest.[Conclusion] The performances of domestic varieties are superior,while the qualities of foreign variety are better.更多还原