Table 4. Carbon and nitrogen contents in stems and leaves of two inbred rice varieties under different nitrogen and sowing density treatments.

Variety	Density	Nitrogen	Carbon content in stems and leaves (%)	Nitrogen content in stem and leaf (%)
HHZ	LD	N0	35.7 ± 0.8c	0.70 ± 0.01a
		LN	36.7 ± 0.4b	0.60 ± 0.01b
		HN	38.7 ± 0.2a	0.53 ± 0.06c
	HD	N0	35.3 ± 0.5c	0.59 ± 0.01b
		LN	37.0 ± 0.3b	0.70 ± 0.01a
		HN	38.0 ± 0.6a	0.65 ± 0.08ab
YNSM	LD	N0	37.6 ± 0.2a	0.53 ± 0.06c
		LN	37.2 ± 0.5a	0.63 ± 0.05ab
		HN	37.4 ± 0.5a	0.68 ± 0.03a
	HD	N0	36.8 ± 0.6a	0.51 ± 0.04b
		LN	37.4 ± 0.1a	0.54 ± 0.04b
		HN	37.5 ± 0.2a	0.61 ± 0.06a