摘要
在灰色系统下,对13个苜蓿Medicagosativa品种在兰州的生产性能用株高、再生速度、鲜草产量、分枝数、叶量等指标进行分析,建立品种评价模型,综合评价各品种的生产性能。结果表明,在兰州地区生产性能表现较好的苜蓿品种有L33、新疆大叶、L173、PL55、Algongun等,而河西、陇东、陇中等品种生产性能较低。根据各项指标的权重比较分枝数所占的权重>株高>叶量>鲜草产量>再生速度。
The grey relevancy coefficient method has been widely used in systematic evaluation in recent years, in which the distribution of all variables is blurred and analyzed by calculating the grey relational degrees. In this study, the productivity performances in Lanzhou of 13 alfalfa cultivars were evaluated using indexes including plant height, regrowth speed, fresh forage yield, branch number, and leaf yield. A comprehensive cultivar evaluation model was established. The results indicated that in the Lanzhou area, cutivars including L33, L173 introduced from Australia, Xinjiang Daye, PL55 and Algongun have relatively good productive performance, while Hexi, Longdong, Longzhong and other local cultivars have relatively low productivity. The order of 6 indexes in the grey relevancy analysis for weight was: branch number > plant height > leaf yield > fresh forage yield > regrowth speed.
出处
《草业科学》
CAS
CSCD
2004年第3期26-29,共4页
Pratacultural Science
关键词
苜蓿
灰色关联度
生产性能
综合评价
alfalfa
grey relevancy
productivity
comprehensive evaluation
