用灰色关联系数法对26个苜蓿品种生产性能的综合评价

Use of the Grey Relevancy Coefficient Method for Comprehensive Evaluation of the Productive Performance of 26 Alfalfa Cultivars

为筛选最适宜在呼和浩特地区种植的苜蓿品种,应用灰色关联度分析研究了生长在呼和浩特地区的26个国内外优良苜蓿品种的生产性能。结果表明:众多性状中株高对鲜草产量的贡献最大,其次是单株重、单枝重、茎粗、分枝数、干鲜比,而茎长和根茎粗对苜蓿生产性能影响较小。评价筛选出牧野综合性状最好,生产性能优异,其次为射手2号、润布勒、金皇后、牧歌,可广泛在该地区推广应用。

Relational grade analysis of grey system was used to study the productive performance of 26 alfalfa cultivars planted in Hohhot area in this paper. The results showed that plant height had the highest effect on fresh herbage yield, weight of per plant, weight of per shoot , stem diameter, branch number and ratio of dry per fresh were secondary, and stem height and crown diameter had the least effect. Relational grade analysis of grey system was used to evaluate characters of 26 alfalfa cultivars; Alfagraze had good complex character and superiority in relative herbage yield potential. Sheshou No.2, Rambler, Baralfa and Amerigraze were secondary, and these alfalfa cuhivars could deserve extension in this province.