22个紫花苜蓿品种的引种试验和生产性能综合评价

Test and comprehensive assessment on the performance of 22 alfalfa varieties

在半干旱的陇东中部地区,对22个国内外紫花苜蓿品种进行了品比试验和抗逆生理测定,结果表明,1)各品种当年生育期差异不显著,次年国产品种和WL系列品种返青早,不同品种显蕾初花期差异显著;大多数国外品种的抗旱、抗寒性不如甘农1号等国内品种。2)在3年干草产量中,有14个苜蓿品种比陇东苜蓿增产6.4%～25.2%,达显著水平;根据层次分析法,可将22个品种的生产性能分为4个等级,其中,皇冠、甘农1号综合评价最高。3)结合增产幅度,可以认为,甘农1号、皇冠、阿尔冈金、牧歌、巨人等品种,增产极显著、抗旱抗寒性强,稳产性好,综合评价靠前,适宜在庆阳全市大面积种植;甘农2号、苜蓿王、新疆苜蓿、甘农3号、三得利,增产显著,稳产性、综合评价较好,各地可根据生态条件、品质特性和种植目的,选择适宜品种进行种植。

In the semi-arid area of eastern Gansu province,performance and stress-resistance testing were conducted with 22 domestic and introduced alfalfa（Medicago sativa） varieties.1） There were no differences between varieties in breeding time in the first year,but in the next year,domestic variety and WL series became green earlier than other varieties and there were significant differences in flower budding for all varieties.The drought-and cold-resistance of most of the introduced varieties were no better than those of the domestic ones such as Gannong No.1.2） The analysis of three-year hay production showed a 6.4%-25.2% significant increase in 14 alfalfa varieties in contrasts with the Longdong variety.The hierarchy analysis indicated that the varieties could be divided into 4 ranks based on their performance： Phabulous and Gannong No.1 were the best.3） Some of the varieties,including Gannong No.1,Phabulous,Algonquin,Ameristand,and Amerigraze,would be suitable for wide utilization in the Qingyang area because they all easily performed with high,more stable production,drought-and cold-resistance,and higher assessment scores.The rest,including Gannong No.2,Alfaking,Xinjiang,Gannong No.3,and Sanditi,could be used in some areas according to the individual ecological conditions,variety property and utilization target.