关于用主成分分析法预测水稻齐穗期的探讨  

Study on the Prediction of Rice Full Heading Stage by Principle Components Analysis

作　　者：金明淑[1] 朴红权[1] 李艳茹 

机构地区：[1]延边农学院农学系

出　　处：《延边农学院学报》1996年第2期98-101,共4页

摘　　要：本文根据从水稻播种期里齐穗期之间的气候因子与齐穗期出现早晚的相关关系，运用主成分分析法来预测水稻齐穗期．据分析，抽穗期与≥１０℃活动积温、有效积温、总辐射量、降水量和日照时数有关，其中与温度条件影响最大，ｒ＝－０．８１９．用主成分为预报因子建立的预报方程为：Ｎ＝６６．４３４６－０．０００８５７Ｚ；其预报效果较好．The rice full heading stage was predicted by principle component analysis.Heading stage had the relations with active accumulated temperature (≥ 10℃ ),effective accumulated temperature,total radiation dose, precipitation and hours ofsunshine, of which influence of temperature was great, r=-0.819. Theprognostic equation was N= 66.4346-0.0008572,its predicted effect was good.

关 键 词：气候因子 齐穗期 主成分分析 水稻 

分 类 号：S511[农业科学—作物学] S165.21