Effects of biochar application combined with nitrogen reduction on yield and nitrogen use efficiency of maize

doi:10.3969/j.issn.1004-1524.2022.02.05

Acta Agriculturae Zhejiangensis ›› 2022, Vol. 34 ›› Issue (2): 248-254.DOI: 10.3969/j.issn.1004-1524.2022.02.05

• Crop Science • Previous Articles Next Articles

Effects of biochar application combined with nitrogen reduction on yield and nitrogen use efficiency of maize

CUI Wenfang^a(), CHEN Jing^a, LU Fukuan^a, QIN Li^a, QIN Dezhi^a, WANG Liping^a, GAO Julin^b^,^*()

a. Vocational and Technical College, Inner Mongolia Agricultural University, Hohhot 010019, China
b. Agricultural College, Inner Mongolia Agricultural University, Hohhot 010019, China

Received:2021-03-26 Online:2022-02-25 Published:2022-03-02
Contact: GAO Julin

Abstract

Abstract:

In order to explore the optimal nitrogen reduction amount and nitrogen use efficiency of N-efficient maize variety, N-efficient maize variety Zhengdan 958 (ZD) and N-inefficient variety Xianyu 508 (XY) were adopted as test materials in the present study. The split zone test design was introduced with nitrogen rate as the main zone and maize variety as the secondary zone. For the main zone, 5 treatments were designed: C0, N rate of 300 kg·hm^-2 without biochar application; C1, N rate of 300 kg·hm^-2 with 3 000 kg·hm^-2 biochar application; C2, N rate of 255 kg·hm^-2 with 3 000 kg·hm^-2 biochar application; C3, N rate of 210 kg·hm^-2 with 3 000 kg·hm^-2 biochar application; C4, N rate of 165 kg·hm^-2 with 3 000 kg·hm^-2 biochar application. It was shown that, judged from nitrogen use efficiency and yield, the proper N rate was 165-210 kg·hm^-2 with biochar application for ZD. In other words, nitrogen reduction potential for ZD was 90-135 kg·hm^-2 under the given condition, and the nitrogen use efficiency could be elevated by 52.8%-93.3% compared with C0 treatment. Besides, the nitrogen accumulation in grains were mainly transferred from root system at anthesis stage under N rate of 165-210 kg·hm^-2 with 3 000 kg·hm^-2 biochar application for ZD. In general, proper nitrogen reduction combined with biochar application could exert the advantages of N-efficient variety in nitrogen uptake and utilization, hence to stabilize maize yield with higher nitrogen reduction rate.

Key words: maize, biochar, nitrogen reduction, nitrogen use efficiency, nitrogen accumulation

CLC Number:

S147

CUI Wenfang, CHEN Jing, LU Fukuan, QIN Li, QIN Dezhi, WANG Liping, GAO Julin. Effects of biochar application combined with nitrogen reduction on yield and nitrogen use efficiency of maize[J]. Acta Agriculturae Zhejiangensis, 2022, 34(2): 248-254.

Figures/Tables 3

References 19

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主处理 Main treatment	品种 Variety	TA/g	MA/g	GA/g	NTS		NTR
主处理 Main treatment	品种 Variety	TA/g	MA/g	GA/g	转移量 Transfer amount/g	对籽粒氮贡献率 Contribution rate to grain nitrogen/%	转移量 Transfer amount/g	对籽粒氮贡献率 Contribution rate to grain nitrogen/%
C0	XY	3.42 f	1.65 g	2.32 f	0.55	23.68	1.77	76.32
	ZD	3.15 g	1.86 f	2.16 g	0.88	40.61	1.29	59.39
C1	XY	3.14 g	2.20 c	2.44 e	1.49	61.27	0.94	38.73
	ZD	3.91 d	1.90 ef	2.66 d	0.65	24.57	2.01	75.43
C2	XY	4.36 c	1.69 g	3.27 b	0.60	18.26	2.67	81.74
	ZD	3.38 f	1.66 g	2.05 h	0.33	16.05	1.72	83.95
C3	XY	3.50 e	2.85 b	2.41 e	1.76	73.14	0.65	26.86
	ZD	3.07 h	1.92 e	1.92 h	0.77	40.14	1.15	59.86
C4	XY	4.50 b	3.29 a	3.16 c	1.95	61.78	1.21	38.22
	ZD	5.02 a	2.15 d	3.62 a	0.74	20.41	2.88	79.59

主处理 Main treatment	品种 Variety	TA/g	MA/g	GA/g	NTS		NTR
主处理 Main treatment	品种 Variety	TA/g	MA/g	GA/g	转移量 Transfer amount/g	对籽粒氮贡献率 Contribution rate to grain nitrogen/%	转移量 Transfer amount/g	对籽粒氮贡献率 Contribution rate to grain nitrogen/%
C0	XY	3.42 f	1.65 g	2.32 f	0.55	23.68	1.77	76.32
	ZD	3.15 g	1.86 f	2.16 g	0.88	40.61	1.29	59.39
C1	XY	3.14 g	2.20 c	2.44 e	1.49	61.27	0.94	38.73
	ZD	3.91 d	1.90 ef	2.66 d	0.65	24.57	2.01	75.43
C2	XY	4.36 c	1.69 g	3.27 b	0.60	18.26	2.67	81.74
	ZD	3.38 f	1.66 g	2.05 h	0.33	16.05	1.72	83.95
C3	XY	3.50 e	2.85 b	2.41 e	1.76	73.14	0.65	26.86
	ZD	3.07 h	1.92 e	1.92 h	0.77	40.14	1.15	59.86
C4	XY	4.50 b	3.29 a	3.16 c	1.95	61.78	1.21	38.22
	ZD	5.02 a	2.15 d	3.62 a	0.74	20.41	2.88	79.59

主处理 Main treatment	品种 Variety	产量 Yield/(kg·hm^-2)	NUE/ (kg·kg^-1)	NUpE/ (kg·kg^-1)	NUtE/ (kg·kg^-1)	NHI/%
C0	XY	15 690 de	52.32 e	1.055 f	49.58 bc	67.74 c
	ZD	16 935 b	56.43 d	0.962 f	58.69 a	68.70 c
C1	XY	15 270 e	50.92 e	1.011 f	50.37 b	77.54 a
	ZD	15 945 cd	53.17 d	1.160 e	45.84 c	68.11 c
C2	XY	13 935 f	54.64 d	1.466 d	37.27 d	74.90 b
	ZD	14 175 f	55.56 d	1.163 e	47.79 c	60.55 d
C3	XY	18 345 a	87.35 c	1.667 c	52.41 b	68.92 c
	ZD	18 105 a	86.21 c	1.459 d	59.07 a	62.70 d
C4	XY	16 440 bc	99.61 b	2.618 b	38.04 d	70.26 c
	ZD	18 000 a	109.10 a	2.737 a	39.87 d	71.97 c

主处理 Main treatment	品种 Variety	产量 Yield/(kg·hm^-2)	NUE/ (kg·kg^-1)	NUpE/ (kg·kg^-1)	NUtE/ (kg·kg^-1)	NHI/%
C0	XY	15 690 de	52.32 e	1.055 f	49.58 bc	67.74 c
	ZD	16 935 b	56.43 d	0.962 f	58.69 a	68.70 c
C1	XY	15 270 e	50.92 e	1.011 f	50.37 b	77.54 a
	ZD	15 945 cd	53.17 d	1.160 e	45.84 c	68.11 c
C2	XY	13 935 f	54.64 d	1.466 d	37.27 d	74.90 b
	ZD	14 175 f	55.56 d	1.163 e	47.79 c	60.55 d
C3	XY	18 345 a	87.35 c	1.667 c	52.41 b	68.92 c
	ZD	18 105 a	86.21 c	1.459 d	59.07 a	62.70 d
C4	XY	16 440 bc	99.61 b	2.618 b	38.04 d	70.26 c
	ZD	18 000 a	109.10 a	2.737 a	39.87 d	71.97 c

指标Index	NUE	GA	TA	MA	NHI	PCS	PPR	NUpE
GA	0.459 5
TA	0.552 0	0.959 8^**
MA	0.653 0^*	0.310 8	0.300 2
NHI	-0.040 0	0.604 7	0.358 7	0.226 5
PCS	-0.292 0	-0.421 6	-0.548 7	0.253 9	0.210 2
PPR	0.065 3	0.311 9	0.308 6	-0.177 1	0.1356	-0.134 4
NUpE	0.910 8^**	0.746 9^*	0.820 6^**	0.637 2^*	0.162 1	-0.404 8	0.110 5
NUtE	-0.234 1	-0.874 6^**	-0.880 5^**	-0.235 1	-0.423 9	0.439 8	-0.110 8	-0.601 3

Effects of biochar application combined with nitrogen reduction on yield and nitrogen use efficiency of maize

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