草坪草生态适应性评价  

Ecological adaptability evaluation of turfgrasses based on multivariate statistical analysis

作　　者：张彦山 何天龙 朱正生 豆丽萍 

机构地区：[1]庆阳市农业科学研究院,甘肃庆阳745000

出　　处：《草业科学》2013年第4期546-552,共7页Pratacultural Science

基　　金：庆阳市科技攻关项目(1003NKCM004)

摘　　要：利用主成分分析法、隶属函数法和聚类分析法,对9个草坪草品种的生态适应性进行综合评价。结果表明,不同品种草坪草的16个生态适应性指标变化程度不同,而且部分指标之间存在显著相关;4个主因子代表16个指标92%的数据信息,‘科纳多’在第一个主因子上的表现最好。综合多元统计方法,将9个草坪草品种分为3类,其中,表现好类包括‘公园’和‘百胜’,表现一般类包括‘顶峰’、‘绿宝石’、‘球道’、‘爱神特’、‘首相’和‘百灵鸟’,表现差类包括‘科纳多’。Sixteen adaptability indices,including heat resistance,drought and cold resistance,disease resistance,emergence days,turfgrass restore ability,smoothness,resilience,density,uniformity,coverage,texture,seedling vigor,green period,turf establishment and color of 9 turfgrass cultivars were evaluated by principal component analysis,subordinate function and cluster analysis.The results showed that the 16 adaptability indices had different responses,among which texture and heat resistance showed the greatest sensitivity.Some indices were significantly correlated.Four principal factors represented 92% information of the 16 indices,while the cultivar ＇Coalnaduo＇ had outstanding performance with the first principal factor.According to the comprehensive evaluation by the 3 methods,these 9 turfgrass cultivars could be clustered into 3 groups： ＇Park＇ and ＇Barvictor＇belonged to the best group;＇Pinnacle＇,＇Premier＇,＇Accent＇,＇Fairway＇,＇Lark＇ and ＇Emerald＇belonged to the second group;＇Coalnaduo＇ belonged to the poor group.

关 键 词：草坪草 综合评价 主成分分析 隶属函数 聚类分析 

分 类 号：S688.4[农业科学—观赏园艺]