播期对直播水稻产量、花后各器官干物质和氮素积累及转运的影响

孙琪, 耿艳秋, 金峰, 刘丽新, 郑浣彤, 郭丽颖, 邵玺文

Effects of Sowing Dates on Yield, Dry Matter and Nitrogen Accumulation and Translocationin Organs after Anthesis of Direct Seeding Rice

Sun Qi, Geng Yanqiu, Jin Feng, Liu Lixin, Zheng Huantong, Guo Liying, Shao Xiwen

表1 播期对直播稻产量及产量构成因素的影响

Table 1 Effects of sowing date on yield and yield components of direct seeding rice

年份 Year 品种 Cultivar 播期 Sowing date 有效穗数 Productive panicles (×104/hm2) 每穗粒数 Grains per panicle 千粒重 1000-grain weight (g) 结实率 Seed setting rate (%) 产量 Yield (kg/hm2) 2018 白粳1号Baijing 1 SD1 338.72b 109.69a 20.57b 84.35b 4 480.00c SD2 443.67a 107.48a 22.84a 93.44a 6 930.00a SD3 423.00a 78.59b 21.29ab 94.05a 5 680.00b 长白9号Changbai 9 SD1 367.60b 88.99b 22.46a 88.00b 4 900.00c SD2 452.39a 91.25a 23.32a 93.18a 5 900.00a SD3 443.91a 66.55c 23.49a 93.65a 5 350.00b 龙粳31号Longjing 31 SD1 339.11b 92.16a 23.22a 92.40c 4 980.00c SD2 465.50a 84.39b 23.15a 93.05b 5 980.00a SD3 450.33a 79.07c 22.96a 95.63a 5 190.00b 2019 白粳1号Baijing 1 SD1 369.99b 102.45a 20.95b 86.54b 3 900.00c SD2 456.67a 94.47b 23.43a 92.73a 5 650.00a SD3 426.08a 87.31c 21.17b 93.68a 4 550.00b 长白9号Changbai 9 SD1 346.67b 79.36b 19.84c 90.68b 3 950.00c SD2 430.78a 88.04a 22.57a 91.31ab 5 250.00a SD3 413.43a 63.35c 23.98b 92.84a 4 950.00b 龙粳31号Longjing 31 SD1 330.39b 78.00a 23.08a 90.41c 3 750.00c SD2 430.54a 75.88a 21.98ab 93.09b 5 200.00a SD3 423.33a 69.42b 20.75b 95.94a 4 150.00b