【摘要】 应用灰色系统理论,通过对亚热带地区试种的14个紫花苜蓿品种的鲜草产量、株高、分蘖数、根长、叶茎比,蛋白含量等指标进行分析,建立了紫花苜蓿品种综合评估模型,并对其生产性能进行了综合评估.结果表明,WL-323HQ在综合评估模型中得分最高,综合生产性能最好,该品种在亚热带地区生态条件下,是最适宜推广栽培的品种.根据对各项指标的权重比较,其权重顺序为:株高>蛋白含量>分蘖数>根长>叶茎比>鲜草产量.更多还原

【Abstract】 The productivity performance of 14 alfalfa cultivars in subtropical region of China was evaluated by using a synthetic evaluation model based on six main indexes of alfalfa including fresh forage yield,plant height,tillering number,root length,leaf/stem ratio,and crude protein content.The results showed that the cultivar ’WL-323HQ’ not only earned the highest score,but also had relatively good comprehensive productivity performance,indicating that it was suitable for both spreading and planting in subtropical region of China.The order of weight of six indexes in the synthetic evaluation model was: plant height> crude protein content> tillering number> root length> leaf/ stem ratio> fresh forage yield.更多还原