为确定播期对红小豆冀红15号在冀东地区农艺性状和产量的影响,试验设置6月1日、6月16日、7月1日等3个播期处理,采用随机区组排列,在大田条件下连续进行2年试验,分析播期对冀红15号株型相关农艺性状、产量及其构成因素的影响,并分析上述参数与气象因子之间的关系.结果表明:随播期推迟,冀红15号株高显著降低,生育期缩短,单株荚数减少,产量降低.相关性分析表明,分枝数、单株荚数、累计日温差、生育期均与产量呈显著或极显著正相关;活动积温、有效积温与单株荚数呈显著或极显著正相关;活动积温与有效积温降低导致冀红15号单株荚数降低,从而影响产量.本试验条件下冀红15号在冀东地区适宜播期为6月1日.
In order to determine the effect of sowing date on agronomic traits and yield of adzuki bean Jihong 15 in eastern Hebei Province,the experiment was conducted with random block arrangement on June 1,June 16 and July 1 for two years in a row under field conditions to analyze the effect of sowing date on agronomic traits,yield,components,and the relationship between the above parameters and meteorological factors.The results showed that with the delay of sowing date,the plant height,the growth period,the number of pods per plant,and the yield of Jihong 15 decreased.Correlation analysis showed that the number of branches,the number of pods per plant,the cumulative daily temperature difference and the growth period were significantly or extremely significantly positively correlated with the yield.Active accumulated temperature and effective ac-cumulated temperature were significantly or extremely significantly positively correlated with the number of pods per plant.The decrease of active accumulated temperature and effective accumulated temperature led to the decrease of pod number per plant of Jihong 15,which affected the yield.To sum up,under the experi-mental conditions,the suitable sowing date of Jihong 15 in eastern Hebei is June 1.