林间套播条件下花生品种经济性状的相关分析和主成分分析

Correlation Analysis and Principal Component Analysis of Economic Traits of Peanut Cultivars Interplanted with Date Trees

【目的】近十几年,新疆林果业发展迅速,果林间有60多×104hm2的耕地有待高效利用,套种花生可能是使该部分耕地得到有效利用的途径之一。【方法】应用不同花生品种在红枣林中套播比较的数据,使用DPS统计分析软件,对花生产量等10个经济性状进行相关分析和主成分分析,探讨各主要性状间的相互关系及产量与其它性状间的关系。【结果】相关分析表明:在套播条件下,花生单株双果重、株单双果重、单株双果数等性状对产量影响都较大,随着它们的增加,产量随之增加。而随单株单果数和单株单果重的增加,产量会降低。主成分分析表明:平均单双果重、单个双果重、单株双果重和单粒单果重与产量呈正相关且权重系数均较大,这四个性状在第一主成分中直接正向地影响产量。单株单果数和单株单果重与产量呈负相关且权重系数较大,这两个性状在第一主成分中直接负向地影响产量。单粒单果重除在第一主成分上直接正向影响产量外,在第三主成分上通过影响其它性状,也间接地负向影响产量。【结论】果林中套种花生时,应选择使用单株双果数、单株双果重、单个双果重和株单双果重高的品种,避免使用单株单果数和单株单果重过高的品种。栽培管理也应当围绕提高单株双果数、单株双果重、单个双果重和株单双果重及降低单株单果数和单株单果重进行。

【Objective】In recent ten years,the fruits trees have been developed rapidly in Xinjiang.There are more than six hundred thousand hectares faming land need to be efficiently utilized in the fruit bearing forest.Cultivation of peanut in the trees maybe can reasonably use the land.【Method】Data gotten from the test that different peanut varieties are interplanted with date trees are analyzed by using statistical software DPS.Correlation analysis and principal component analysis have been done to probe into the correlation between the 10 traits of tested peanut cultivars.【Result】The results of correlation analysis showed that the traits of two seeds pod weight,pod weight,two seeds pod number per plant and etc.have a positive effects on yield per Ha.With all that traits increased,the yield per Ha.will increase also.With one seed pod number and weight per plant increased,the yield per Ha.will decrease yet.Principal component analysis indicated that weight per pod,weight per two seeds pod,two seeds pod weight per plant and weight per one seed pod have positive correlation with yield per Ha.and they have more weight coefficient in principal component 1.Those four traits positively affect yield per Ha.in component 1 directly.One seed pod number and weight per plant have a negative correlation with yield per Ha.The two traits negative affect yield per Ha.in component 1 directly and in component 3 indirectly.【Conclusion】Suitable peanut cultivars should be selected for interplanting with date trees.The traits of two seeds pod number per plant,two seeds pod weight per plant,weight per two seeds pod and pod weight per plant must be outstanding and one seed pod number per plant,one seed pod weight per plant should be relatively low when peanut cultivars need to be planted.