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3 播期对直播稻抽穗至成熟期各器官干物质转运的影响

Table 3 Effects of sowing dates on dry matter translocation in stem-sheath and leaves of direct seeding rice from heading to maturity stage

年份 Year	品种 Cultivar	播期 Sowing date	茎鞘Stem-sheath		叶片Leaf		穗部干物质增加量 Increase of dry matter in panicle (kg/hm²)	干物质转运对穗部的贡献率 Contribution of dry matter translocation to panicle (%)
年份 Year	品种 Cultivar	播期 Sowing date	转运量 Translocation amount (kg/hm²)	转运率 Translocation rate (%)	转运量 Translocation amount (kg/hm²)	转运率 Translocation rate (%)	穗部干物质增加量 Increase of dry matter in panicle (kg/hm²)
2018	白粳1号	SD1	221.86b	6.91a	250.15c	18.10b	4 644.28c	10.16b
	Baijing 1	SD2	426.92a	8.29a	530.27a	25.34a	6 329.91a	15.12a
		SD3	352.97a	7.83a	352.14b	21.15a	5 324.61b	13.24a
	长白9号	SD1	223.62b	5.66a	156.56c	8.34b	5 547.33b	6.85b
	Changbai 9	SD2	324.16a	7.03a	333.97a	21.00a	6 435.77a	10.23a
		SD3	273.53b	6.57a	286.74b	20.29a	5 786.60b	9.68ab
	龙粳31号	SD1	175.83b	5.05a	313.03c	17.02b	5 665.30b	8.63b
	Longjing 31	SD2	355.09a	8.24a	552.58a	25.52a	6 242.77a	14.54a
		SD3	321.80a	7.78a	431.51b	25.22a	6 127.58ab	12.29ab
2019	白粳1号	SD1	265.56c	7.60b	111.11c	8.76b	4 616.66b	8.16b
	Baijing 1	SD2	667.88a	12.85a	499.39a	21.71a	5 510.90a	21.18a
		SD3	386.28b	8.05b	285.68b	19.25a	5 439.91a	12.35b
	长白9号	SD1	266.19c	6.12b	109.55c	6.13b	3 968.96c	9.47a
	Changbai 9	SD2	486.97a	10.33a	256.48a	17.47a	5 798.02a	12.82a
		SD3	337.98b	7.46ab	211.12b	15.19a	4 829.31b	11.37a
	龙粳31号	SD1	196.88b	6.63b	85.05b	9.46b	4 015.50c	7.02b
	Longjing 31	SD2	559.00a	12.48a	320.55a	16.68a	5 956.14a	14.77a
		SD3	278.60b	7.82b	172.83b	12.85ab	4 867.44b	9.27b