Table 1.

Effects of biochar application and N fertilizer reduction on rice straw biomass, grain yield and its component factors.

Treatment	Straw biomass (g/pot)	Grain yield (g/pot)	Yield component factors
			Panicle number	Grain number per panicle	Thousand seed weight (g)
Control	96.03 ± 24.47 d	42.63 ± 4.64 d	16.00 ± 2.00 f	109.00 ± 14.00 b	24.73 ± 0.58 ab
N160	115.50 ± 6.71 cd	72.47 ± 1.75 c	29.00 ± 4.00 de	117.00 ± 11.00 ab	23.93 ± 0.42 b
N160 + BC	118.55 ± 6.77 cd	70.53 ± 1.96 c	27.00 ± 3.00 e	120.00 ± 10.00 ab	24.27 ± 0.50 b
N200	147.88 ± 13.11 bc	93.03 ± 19.6 b	32.00 ± 3.00 cd	119.00 ± 20.00 ab	24.00 ± 0.20 b
N200 + BC	265.44 ± 14.02 a	145.50 ± 3.00 a	48.00 ± 3.00 a	128.00 ± 20.00 ab	25.47 ± 0.23 a
N240	169.97 ± 14.93 b	82.20 ± 2.00 bc	35.00 ± 2.00 c	103.00 ± 11.00 b	24.27 ± 0.50 b
N240 + BC	241.87 ± 30.72 a	140.23 ± 7.48 a	41.00 ± 3.00 b	140.00 ± 7.00 a	25.33 ± 0.70 a

Data in the table are mean ± standard deviation (n = 3); different lowercase letters in the same column indicate significant differences between treatments (p < 0.05).