摘要
本文对协青早Ａ播种至始穗期天数（ｙ：播始历期），与相应的日均活动积温（ｘ１）、日均有效积温（ｘ２）、日均实效积温（ｘ３）、平均日照时数（ｘ４）、降水量（ｘ５）和日均相对湿度（ｘ６）等气象因子进行多元线性逐步回归分析。结果表明：播始历期与其相应的各气象因子无明显的回归关系；与幼穗分化至始穗期的ｘ２、ｘ３、ｘ４和ｘ５有极显著的回归关系：ｙ＝－１２２．１８２８－８．６７２２５８ｘ２＋２１．８１９２３ｘ３＋０．７７５２９７ｘ４＋０．０２０１１２６８ｘ５；与穗分化中期至始穗期的ｘ５有显著的回归关系：ｙ＝５９．６７８９＋０．０４１１５８７３ｘ５。
Analysis of linear progressive regression was applied to heading period days(y) with corresponding meteorological factors(i.e day average accumulative temperature(x 1),day average effective accumulative temperatur e(x 2),days average actual effective accumulative temperature(x 3),,average sunshine time(x 4),precipitation(x 5) and day average relative humidity(x 6). The results showed that regression of sowing to heading period days with corresponding on rice Xie Qingzao A in this papes meteorological factors was not obvious.Regression of y with x 2,x 3,x 4 and x 5 from young ear differentiation to heading period was extremely remakable. The regression equation is:y=-122.1828-8.672258x 2+21.81923x 3+0.7752976x 4+0.020112668x 5.The regression of y with x 5 from young ear differentiation metaphase to heading period was remakable.The regression equation is:y=59.67989+0.0411587x 5.
关键词
杂交水稻
协青早A
始穗期
气象因子
制种
Hybrid rice Xie Qimgzao A Heading period Meteorological factor Regressive analysis
