Abstract: In order to select the suitable alfalfa varieties for the sandy and semi-drought areas of northwest Liaoning province,the production performances of thirty alfalfa varieties were evaluated by this study with a randomized block design.The results show that there were significant differences in the reviving stage and the most discrepancy reached to twenty-two days.Gannong No.3 was the earliest one,Gongnong No.1,Aohan and Gannong No.1 followed,a majority of domestic varieties revived earlier than introduced varieties.Most domestic varieties were better than introduced varieties in cold resistance and had higher overwinter rates.Among the five selected factors,the ramification number and overwinter rate determined the alfalfa fresh and dry forage yield;moreover,the branch number per stem also had a greater influence on the dry forage production.According to the integrated appraise on the production performance of tested varieties,Gongnong No.1,Baofeng,Gannong No.3,Longdong,Defu,Phabulous,and Affinity were optimum for the extended planting in this area due to their relatively better branching capability and higher plant height.

Key words: Sandy and semi-drought area, Alfalfa, Productive characteristics

摘要： 为筛选适宜辽西北风沙半干旱地区栽培的紫花苜蓿(Medicago sativa)品种,于2007年采用随机区组法设计,对30个国内外紫花苜蓿品种的生产性能进行了比较研究。结果表明:不同苜蓿品种间返青期差异较大,最多相差22d,其中甘农3号(Gannong No.3)返青最早,其次为公农1号(Gongnong No.1)、敖汉(Aohan)和甘农1号(Gannong No.1),国内品种普遍返青早于国外品种;抗寒性方面,国内品种强于国外品种,具有较高的越冬率;5个入选生产性能因子中,分枝数和越冬率决定苜蓿的鲜草和青干草产量,在晾制青干草过程中,还受到主枝侧枝数的较大影响。综合评价参试品种的生产性能,以公农1号、保丰(Baofeng)、甘农3号、陇东(Longdong)、德福(Defy)、皇冠(Phabulous)、爱菲尼特(Affinity)7个品种表现最佳,具有较强的分枝能力和较高的株高,适宜该地区推广种植。

关键词: 风沙半干旱地区, 紫花苜蓿, 生产性能