苜蓿冠层温度的聚类分析  

Cluster analysis of canopy temperature in alfalfa

作　　者：蒋骏[1] 贾志宽[1] 许秀娟[1] 

机构地区：[1]西北农林科技大学,陕西杨凌712100

出　　处：《干旱地区农业研究》2002年第4期17-20,共4页Agricultural Research in the Arid Areas

基　　金：农业部948项目"高产优质抗逆苜蓿新品种的引进及繁育(2001-372)

摘　　要：利用红外技术对从国内外引进的31个苜蓿品种分枝期～结荚期冠层温度进行测定,并对其中26个苜蓿品种不同生育期冠层温度进行聚类分析,结果表明;不同基因型品种间冠层温度存在明显的差异;26个品种可分为3类10个亚类,其中 1亚类各生育期的标准化冠层温度值均为负值,是引种中最理想的苜蓿品种,其次为 2亚类,其分枝期～开花期的标准化冠层温度值多数为负值。The alfalfa canopy temperature of 31 varieties from domestic and abroad were observed by infrared technique from branching period to pod forming period and the canopy temperatures of 26 varieties were analysised with clster. The result show that the alfalfa canopy temperature were different among different genetypes; the 26 alfalfa varieties divided into 3 categories and 10 subcategories. Among them, the Ⅰ1 subcategories were ideal varieties, and their standardized canopy temperature in different growth period were negative. The Ⅱ1 subcategories were second and their standardized canopy temperatures from branching period to florescence period were negative.\;

关 键 词：苜蓿 冠层温度 聚类分析 引种 

分 类 号：S551.7[农业科学—作物学]