Table 5.

Biomass at maturity, nitrogen uptake, and NUE relative to N application rate and planting density in inbred and hybrid rice at Jingzhou in 2017.

Variety	N	D	Biomass	AE	RE	PFP
			(g m−2)	(kg kg−1)	(%)	(kg kg−1)
HHZ	N0	D1	764.7d
		D2	823.2d
		D3	873.6d
	N1	D1	1125.0c	31.2c	26.7bc	63.4c
		D2	1294.5abc	37.5ab	34.9a	71.1b
		D3	1362.6ab	37.8a	36.2a	77.5a
	N2	D1	1250.3bc	32.8bc	27.0bc	57.0d
		D2	1293.5abc	29.1cd	26.1bc	54.4d
		D3	1370.4ab	23.5ef	27.6b	53.3d
	N3	D1	1227.1bc	28.6 cd	20.6d	46.0e
		D2	1335.7abc	24.5de	22.8 cd	43.1ef
		D3	1485.3a	18.8 f	27.2bc	40.7 f
YNSM	N0	D1	810.3d
		D2	830.2d
		D3	870.2d
	N1	D1	1290.3bc	36.6a	35.6bc	71.6b
		D2	1341.0abc	39.6a	37.9b	73.5b
		D3	1480.5ab	38.3a	45.2a	77.4a
	N2	D1	1204.5c	31.4b	21.9e	57.3c
		D2	1337.4abc	28.8bc	28.2d	54.2 cd
		D3	1486.6ab	24.0d	34.3c	53.3d
	N3	D1	1352.5abc	25.8cd	24.1e	46.4e
		D2	1484.4ab	22.8de	29.1d	43.1ef
		D3	1541.9a	18.6e	29.9d	42.1 f
Y-LY900	N0	D1	1216.1de
		D2	1518.2ab
		D3	1533.0a
	N1	D1	1248.8d	8.0b	17.1cd	54.3a
		D2	1580.5a	9.3a	39.2a	56.3a
		D3	1531.1a	9.4a	34.5b	58.0a
	N2	D1	1264.3d	6.5d	8.2e	45.1b
		D2	1437.0c	7.0c	30.7b	44.6b
		D3	1557.4a	5.0e	32.8b	42.4bc
	N3	D1	1157.5e	4.3f	15.2d	37.4cd
		D2	1450.2bc	4.2f	20.7c	35.6d
		D3	1527.5a	4.1f	20.5c	34.2d
QLYSM	N0	D1	1199.2 g
		D2	1429.8bcd
		D3	1491.3ab
	N1	D1	1371.5de	10.3ab	61.7a	58.0a
		D2	1483.9abc	9.8b	38.6b	53.7b
		D3	1468.8abc	13.0a	15.6c	53.0b
	N2	D1	1252.3fg	4.9cd	15.9c	43.3c
		D2	1413.3 cd	4.0d	19.5c	39.1d
		D3	1538.9a	7.4bc	4.8d	39.0d
	N3	D1	1204.4 g	5.2cd	34.3b	35.7e
		D2	1309.4ef	3.1d	18.4c	32.4e
		D3	1479.4abc	5.8cd	2.4d	33.6e
ANOVA		Variety (V)	**	*	ns	ns
		Nitrogen (N)	**	**	*	*
		Density (D)	*	*	ns	ns
		V*N	**	ns	*	*
		V*D	ns	ns	ns	ns
		N*D	ns	ns	ns	ns
		V*N*D	**	ns	ns	ns

^†Different lowercase letters within columns indicate significant differences at P < 0.05 across N rates (n = 3).