应用灰色关联度理论对高寒牧区引种的苜蓿进行综合评价

20种苜蓿材料的引种试验于1996－1999年在甘肃省皇城绵羊育种试验场实施。用灰色关联度理论和模糊数学层次评价方法对试验中表现较好的11种苜蓿材料进行了分析比较。经排序表明：沧州苜蓿在供试材料中表现最好，其次为润布勒，再次为罗默，此3种苜蓿与“参考品种”的加权关联度都大于0．60。其后，依次为格林、甘农1号、拉达克、佳木斯、费纳尔、和田、沙湾和甘农2号。

Comprehensive evaluation on alfalfa introduced in high and cool pastoral area with the theory of Grey relevancy

The introducing and planting experiment for 20 alfalfa cultivars was conducted at Huangcheng Sheep Breeding Experimental Farm of Gansu province from 1996 to 1999.Of 20 cultivars, 11 promising cultivars were analyzed and evaluated with the theory of Grey relevancy and hierarchy evaluation of fuzzy algorisms.By means of ordination, the result showed that Cangzhou was the best one,followed by Rambler, Roamer, Grimm, Gannong N0.1, Ladak, Jiamusi, Vernal, Hetian, Shawan and Gannong No.2 successively. The weighted relevancy of the first three cultivars and the reference cultivar was over 0.60.