施氮量对迟播油菜氮素利用和产量品质的影响

李小勇,顾炽明,刘康,廖星,黄威,杨志远,秦璐

Effects of Nitrogen Application Rate on Nitrogen Use Efficiency, Yield and Quality of Late Sowing Rapeseed

LI XiaoYong,GU ChiMing,LIU Kang,LIAO Xing,HUANG Wei,YANG ZhiYuan,QIN Lu

表2 播期和施氮量对油菜成熟期农艺性状的影响

Table 2 Effects of sowing dates and nitrogen rates on agronomic traits of rapeseed at maturity

播期 Sowing date	施氮量 Nitrogen rate	应城 Yingcheng			黄冈 Huanggang
播期 Sowing date	施氮量 Nitrogen rate	根颈粗 Root crown diameter (mm)	株高 Plant height (cm)	分枝起点高度 Branch height (cm)	根颈粗 Root crown diameter (mm)	株高 Plant height (cm)	分枝起点高度 Branch height (cm)
S1	N0	9.41d	153.40bc	102.50c	8.03f	142.77de	96.11c
	N1	11.95b	179.00a	119.46b	11.52c	165.73ab	111.43b
	N2	12.09b	180.85a	121.29b	12.33b	176.80a	118.44a
	N3	13.10a	183.00a	125.45a	13.24a	178.25a	120.47a
S2	N0	5.68f	144.50c	83.93f	6.53g	136.20e	75.25f
	N1	8.50e	154.00bc	87.53f	9.51e	149.00cde	81.50e
	N2	9.45d	156.67bc	92.86e	10.17d	154.62bcd	87.37d
	N3	11.47c	160.90b	97.33d	11.21c	159.35bc	92.35c
方差分析Variance analysis
	S	**	**	**	**	**	**
	N	**	**	**	**	**	**
	S×N	**	NS	**	*	NS	**