摘要
基于灰色系统理论,对金沙江干热河谷地区引种的14个紫花苜蓿Medicago sativa品种的鲜草产量、干草产量、株高、分蘖数、茎叶比、蛋白质含量主要生产性能指标进行灰色关联度分析,根据权重比较得出各项生产性能指标的权重顺序为:蛋白质含量>鲜草产量>茎叶比>株高>干草产量>分蘖数;依据各项指标权重构建了紫花苜蓿综合评价模型,并应用综合评价模型对各品种生产性能进行综合评价,结果表明:猎人河(74-55)在综合评价模型中评价值最高,综合生产性能最好,在金沙江干热河谷地区特殊的生态条件下,是最适宜推广种植的优良品种。
Based on grey system theory, the study conducted the gray system analysis on main indexes of 14 introduction alfalfa cuhivars in dry-hot valley region of Jinsha River, including fresh yield, dry yield, plant height, tiller number, stem-leaf ratio and crude protein content. The order of Weight of main production indexes in the synthetic evaluation model was that crude protein content〉fresh yield 〉stem-leaf ratio〉plant height〉dry yield〉tiller number. A comprehensive alfalfa cuhivar evaluation model was established according to the weight of main indexes, and comprehensively evaluated the production performance of alfalfa cuhivars with model, the results showed that the cuhivar Hunter- river（74-55）earned the maximum evaluation value, and it had relatively outstanding comprehensive productivity performance, which indicated that it was suitable for both spreading and planting in special ecological condition of dry-hot valley region of Jinsha River.
出处
《草业科学》
CAS
CSCD
北大核心
2009年第9期135-139,共5页
Pratacultural Science
基金
国家"十一五"科技支撑课题"长江中上游西南山区退化生态系统综合整治技术研究"(2006BAC01A11)
关键词
紫花苜蓿
灰色系统
金沙江干热河谷
综合评价
生产性能
alfalfa
grey system
dry-hot valley region of Jinsha River
synthetic evaluation
production performance
