稻田春玉米迟熟品种比较及相关性分析研究  

Comparison of Late Maturing Spring Maize Varieties in Paddy Field and Its Correlation Analysis

作　　者：雷恩[1] 唐启源[1] 罗红兵[1] 陈立军[1] 

机构地区：[1]湖南农业大学农学院,长沙410128

出　　处：《作物研究》2009年第1期24-26,29,共4页Crop Research

基　　金：国家科技支撑计划共性项目;编号2006BAD02A13-3-4

摘　　要：2007年在长沙对不同植株高度的8个迟熟杂交玉米品种,进行了品种比较试验以及相关性分析。结果表明,中秆品种登海11号产量最高,达8632.5kg/hm2,抽雄至成熟期干物质积累速率最快,为6.33g/d.株。春玉米抽雄至成熟期干物质积累速率和收获指数均与穗粒重呈显著正相关,其相关系数分别为0.7598**和0.4801*,穗位高、株高均与穗粒重呈负相关,其相关系数分别为-0.5403*,-0.3701。Eight late maturing spring maize varieties with different plant heights were used be materials to conduct comparative experiment and correlational analysis in paddy field in Changsha in 2007. The results indicated that yield and day matter accumulation rate after anthesis of DHll, a medium plant height cultivar, were highest, which reached to 8 632.5 kg/hm^2 and 6.33 g/d ^＊ plant respectively. Significant positive correlation between dry matter accumulation rate after anthesis, harvest index and grain weight per ear was observed, and the correlation coefficients were 0. 7598^＊＊ and 0. 4801^＊ respectively. Negative correlation between ear hdight, plant height and grain weight per ear existed, and the correlation coefficients were -0. 5403^＊ ＊ and -0. 3701 respectively.

关 键 词：稻田 春玉米 品种比较 相关性分析 

分 类 号：S513.037[农业科学—作物学]