美国‘WL’系列苜蓿品种在北疆的引种试验

为筛选出适合新疆北部的苜蓿品种,引进‘WL168HQ’、‘WL343HQ’、‘WL363HQ’、‘WL354HQ’等4个美国‘WL’系列苜蓿品种,进行2年的生育期和产草量测定和主要营养成分的分析。结果表明,不同品种生育期无明显差异,越冬率均在95%以上,在当地表现出很好的适应性。‘WL’系列苜蓿品种蛋白质含量均高于新疆大叶苜蓿,其中‘WL168HQ’初花期粗蛋白质含量最高达20.32%,中性洗涤粗纤维含量35.0%。生长第2年‘WL168HQ’、‘WL343HQ’年总产量最高达24024.7、23590.7 kg/hm2,比新疆大叶苜蓿增产25.2%、23.8%(P0.01)。经分析‘WL168HQ’和‘WL343HQ’品种在北疆平原区适应性比较强,干草产量高,营养丰富,建议同类区域广泛推广种植,也可以作为育种材料加以创新利用。

Introduction of 'WL' Alfalfa Varieties in Northern Xinjiang

To select alfalfa varieties which could grow well in Northern Xinjiang,4 American 'WL' alfalfa varieties including 'WL168HQ','WL343HQ','WL363HQ' and 'WL354HQ' were introduced to plain area of northern Xinjiang.Growth period,yield and main nutritional components of the 4 varieties were analyzed in 2 years.The results showed that growth period of the 4 varieties had no obvious difference,and the wintering survival rates were above 95％.The 4 alfalfa varieties showed very good adaptability to the local environment.The crude protein contents of 'WL' varieties were higher than that of 'Daye'.Crude protein and NDF content of 'WL168HQ' in blooming period was 20.32％ and 35％,respectively.In the second year,the total yield of 'WL168HQ' and WL343HQ' were up to 24024.7 and 23590.7 kg/hm2 respectively,increased by 25.2％ and 23.8％ compared with that of 'Daye' (P＜0.01).The results indicated that 'WL168HQ' and 'WL343HQ' had strong adaptability,high yield and rich nutrition in northern Xinjiang.Thus,we suggested that these varieties should be widely cultivated in areas with similar environment,and also be used as breeding material of possible new alfalfa varieties.