春播玉米品种熟期类型划分研究  

Study on Mature Type Classification of Spring Maize Varieties

作　　者：李青松[1] 方华[1] 郭玉伟[1] 梁秋华[1] 马中义[1] 张勤[1] 季志强[1] 孙吉茹[1] 袁文利[1] 

机构地区：[1]承德市农业科学研究所,河北承德067000

出　　处：《河北农业科学》2010年第9期8-11,25,共5页Journal of Hebei Agricultural Sciences

摘　　要：以连续4 a的春玉米生育期调查数据和气象资料为基础资料,对表达玉米熟期类型的指标及其关系进行了分析和研究。结果表明:活动积温、生育天数和叶片数三者之间呈极显著正相关,活动积温和生育期天数能较准确地表达玉米熟期类型,叶片数只可作为辅助指标。通过聚类分析,将73个玉米品种分为10类熟期类型;并以此为基础科学推断划分春玉米熟期类型为12类,明确了各熟期类型的活动积温及生育天数指标。Based on the growth period of spring maize and the meteorological data,the indexes of mature type of maize and their relationship were studied.The results showed that there was a significantly positive correlation among the active accumulated temperature,growth period and leaf number,the active accumulated temperature and growth period could correctly express the mature type of maize,and the leaf number was an auxiliary index.The mature types of 73 maize varieties were divided into 10 groups by cluster analysis,based on which,it was inferred that there were 12 mature types.The indexes of active accumulated temperature and growth period of each group were cleared.

关 键 词：玉米 春播品种 熟期类型 活动积温 生育天数 叶片数 

分 类 号：S513[农业科学—作物学]