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4 播期对直播稻抽穗期和成熟期各器官氮素积累量的影响

Table 4 Effects of sowing dates on nitrogen accumulation in various organs of direct seeding rice at heading stage and maturity stage kg/hm2

年份 Year 生育时期 Growth stage 品种 Cultivar 播期 Sowing date 茎鞘 Stem-sheath 叶片 Leaf 穗 Panicle 地上部 Aboveground 2018 抽穗期Heading stage 白粳1号Baijing 1 SD1 19.84b 23.57c 5.72b 49.13c SD2 23.51a 31.92a 8.57a 64.00a SD3 22.42a 27.43b 7.96a 57.81b 长白9号Changbai 9 SD1 19.24b 22.69b 5.26a 47.19c SD2 24.43a 30.28a 8.12a 62.83a SD3 22.04ab 26.79b 6.48a 55.31b 龙粳31号Longjing 31 SD1 16.79a 20.01b 5.44a 42.24b SD2 19.99a 26.26a 7.06a 53.31a SD3 17.85a 24.39ab 6.21a 48.45b 成熟期Maturity stage 白粳1号Baijing 1 SD1 16.87a 12.72a 44.59b 74.18b SD2 17.07a 15.79a 53.50a 86.36a SD3 16.93a 13.96a 49.75a 80.64a 长白9号Changbai 9 SD1 15.20a 12.50a 41.63b 69.33c SD2 17.92a 15.83a 52.75a 86.50a SD3 16.47a 14.25a 48.62ab 79.34b 龙粳31号Longjing 31 SD1 12.66b 11.46a 48.43b 72.55c SD2 14.19a 13.54a 55.50a 83.23a SD3 12.93b 12.82a 51.32ab 77.07b 2019 抽穗期Heading stage 白粳1号Baijing 1 SD1 14.27b 13.44b 5.29b 33.00c SD2 23.88a 20.07a 9.71a 53.66a SD3 20.07a 15.94b 7.16ab 43.17b 长白9号Changbai 9 SD1 17.01b 10.69b 5.01b 32.71c SD2 24.69a 21.55a 9.23a 55.47a SD3 23.06a 14.47b 6.34b 43.87b 龙粳31号Longjing 31 SD1 14.58b 10.25b 5.55b 30.38c SD2 21.72a 17.08a 10.64a 49.44a SD3 17.42b 15.27ab 7.37ab 40.06b 成熟期Maturity stage 白粳1号Baijing 1 SD1 11.70b 7.93b 33.03c 52.66c SD2 16.79a 11.29a 50.95a 79.03a SD3 15.01a 9.12ab 41.83b 65.96b 长白9号Changbai 9 SD1 13.38b 5.71b 36.65c 55.74c SD2 18.22a 10.59a 49.91a 78.72a SD3 17.26a 7.56ab 43.31b 68.13b 龙粳31号Longjing 31 SD1 10.67b 6.12a 28.12c 44.91b SD2 15.52a 9.02a 42.89a 67.43a SD3 12.68ab 8.73a 37.77b 59.18ab