In order to discuss the effects of different methods to the productivity capability of alfalfa and smooth brome mixed grassland ,the productivity of artificial grassland mixed with Nongjing No .1 alfalfa and Nongjing No .6 smooth brome was studied .The results showed that the total yield and productivity of artificial grassland planted in the first year were the lowest and significantly different compared with the second year and the third year .The proportion of Nongjing No .1 and Nongjing No .6 at 1∶1 had the largest yield which was 17 710 .0 kg・hm-2 ,while the yield Nongjing No .1 and Nongjing No .6 mixed at the proportion of 2∶1 was only 13 579 .5 kg・hm-2 and was the lowest among all treatments .The more proportion of alfalfa the higher crude protein and the better quality of the grassland .The quality of artificial grassland in nutrition period was higher than that in procreation period .% 为了探索不同混播方式对混播草地的生产性能的影响,以农菁1号紫花苜蓿和农菁6号无芒雀麦为材料,研究不同混播草地的生产性能.结果表明：建植当年混播人工群落的总产量与生产力均最低,与建植第二年和第三年差异极显著(P<0.01).产量比较结果为农菁1号与农菁6号1∶1混播时产量最高,产鲜草17710.0 kg・hm-2,农菁1号与农菁6号2∶1混播产量最低,产鲜草仅13579.5 kg・hm-2.豆科牧草的比例越大,人工草地的粗蛋白含量越高,品质越好,营养期优于生殖期.
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