【摘要】 本研究结合甘孜州历年核桃质量监测数据,通过群众和当地林业部门推荐、实地调查等方法,初选了52株表现较好的核桃,复选了33株优树建立档案,后经连续3年的指标监测,终选了12株核桃优树。采用主成分分析法对12株核桃优树的品质性状进行了分析,确定了12株优树的综合排名,其中排名前三的依次是LDW-2、DBZ-1、BTB-6。研究表明,优树选择研究在核桃各项指标监测的基础上,采用主成分分析法,能够得到更高效、更精确、更科学的优树综合排名。更多还原

【Abstract】 Based on the monitoring data of walnut quality over the years in Ganzi Prefecture, this study preliminarily selected 52 walnut trees with good performance through the recommendation of masses and local forestry department,on-the-spot investigation and so on, then re-elected 33 superior trees to establish archives, and finally selected 12 superior trees after 3 years of continuous monitoring. Principal component analysis was used to analyze the quality traits of 12 superior trees, and the comprehensive ranking of 12 superior trees was determined, among which, the top three were successively LDW-2, DBZ-1 and BTB-6. The study showed that principal component analysis could be used to obtain a more efficient, more accurate and more scientific comprehensive ranking of the superior trees on the basis of the monitoring of various walnut indicators.更多还原