| 摘要: |
| 比较了引进美国的15个紫花苜蓿品种和新疆大叶苜蓿的生长特性、产草量、营养价值、产出能二土、经济效益等的差异。结果表明，15个引进品种中有10个品种的各个性状均优于对照品种，其中牧歌401、巨人201的生长势、再生性能强；鲜干草产量、粗蛋白含量高，营养丰富；产能效率高、经济效益好，值得大面积推广。 |
| 关键词: 紫花苜蓿 鲜草产量 苜蓿引种 营养效能 |
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| 基金项目:农业部“948”项目(2001-372)；教育部重点项目(重点01167)；农业部农业结构调整重大技术研究专项（2002-09-02A）；陕西省科技厅攻关项目（2001K01-G12-04） |
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| Study on productive power of different alfalfa varieties |
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| Abstract: |
| The experiment was conducted to study fifteen introduced alfalfa varieties and Xingjiang Daye in growth characteristic,forage yield,nutritive value and economic profit.Through two years of cultivation test,the results showed the ten introduced varieties among the fifteen performed better in the above characteristics than that of domestic variety.The varieties of Amerigraze 401 and Ameristand 201 had higher growth and regrowth ability,higher forage yield,higher content of CP,and therefore were the most profitable and nutritive,they were the valuable varieties for extension on large scale in arid and semiarid areas. |
| Key words: alfalfa fresh forage yield alfalfa introduction nutritive energy |
