摘要
针对西藏"一江两河"高海拔地区豆科牧草种植需求,应用灰色关联综合分析,用总生长高度、茎叶比、鲜干比、越冬率、鲜草产量等指标构建品种评价模型,对20个国内外紫花苜蓿品种在该地区的生产性能进行比较,结果表明参试品种中的综合表现较好的有‘雷西斯’、‘苜蓿王’、‘中兰1号’、‘德宝’、‘赛特’等品种,而‘阿尔冈金’、‘杜普梯’、‘皇后’、‘博勒维’等品种生产性能较低。评价指标中所占的权重顺序为茎叶比>总生长高度>鲜干比>越冬率>鲜草产量。
In order to meet the planting requirements of leguminous forage in the ＂Three Rivers＂ region of Tibet, the grey relevancy analysis（GRA） method is used in systematic evaluation, in which the distribution of all variables is analyzed by calculating the grey relational degrees. In this study, the productivity performances of 20 alfalfa cultivars in the ＂Three Rivers＂ region of Tibet were evaluated, using indexes including plant total height, stem-leaf ratio, fresh-dry ratio, wintering rates and fresh yield, a comprehensive cultivar evaluation model was established. The results indicated that cultivars including ＇ Resis＇, ＇ Alfaking ＇ Derby＇ Alfalfaqu ＇, ＇Zhonglan No.l＇, and ＇ Sitel＇ have relatively good productive performance, while ＇Algonquin＇, ＇ Deputes＇, een＇ and ＇Beaver＇ have relatively low adaptability. The order of 5 indexes in the grey relevancy analysis for weight was： stem-leaf ratio〉plant total height〉fresh-dry ratio〉wintering rates〉fresh yield.
出处
《中国农学通报》
2015年第2期80-84,共5页
Chinese Agricultural Science Bulletin
基金
西藏自治区科技专项"西藏主要栽培豆科牧草繁育研究与示范"(Z2013C02N02)
"抗霜霉病苜蓿品种的示范与推广"(2012F4001002)
关键词
“一江两河”
紫花苜蓿
灰色关联度
综合评价
生产性能
the ＂Three Rivers＂ region
alfalfa
grey relevancy
productivity
comprehensive evaluation
