Effect of Nitrogen and Zinc Application on the Accumulation and Distribution of Dry Matter and Nitrogen and Zinc of Different Summer Maize Varieties

doi:10.7668/hbnxb.20192579

Abstract

Abstract:

This study investigated the accumulation and distribution of dry matter,nitrogen(N)and zinc(Zn)of summer maize under N and Zn fertilization,to provide a basis for reasonable application of zinc fertilizer and combined fertilization.Split-split design was used with three N rates(90,180,225 kg/ha N)as the main factor,two Zn rates(0,4.5 kg/ha ZnSO₄·7H₂O)as the second factor,two varieties(ZD958 and GSY66)as the third factor.The effect of N and Zn application on the grain yield,dry matter accumulation dynamic and N and Zn absorption,accumulation and distribution of each organ of different maize varieties by field experiment.The results showed that the grain yield achieved 9.77,10.42 t/ha under the N rates of 180,225 kg/ha,respectively,increased by 18.0% compared with 90 kg/ha.The treatment of 225 kg/ha N had the highest plant dry matter accumulation after silking,while the treatment of 90 kg/ha had higher ratio of cob and grain dry matter at the mature stage.Highest N concentration in each organ,Zn concentration in the stem and N and Zn accumulation in the leaf and grain were obtained in the treatment of 225 kg/ha,while highest Zn concentration in the sheath,bract and grain and ratio of grain N and Zn were found in the treatment of 90 kg/ha.No effect was found in the grain yield and dry matter accumulation and distribution under two Zn treatments.Zn application significantly increased N and Zn concentration and accumulation but decreased distribution ratio of grain N and Zn by 6.93,6.86 percentage points,respectively.Relative to GSY66,ZD958 had higher grain yield and dry matter ratio,and increased dry matter by 29.2% at maturity.Besides this,ZD958 decreased grain N and Zn concentration by 8.9% and 5.3%,respectively,but improved grain accumulation and distribution ratio.Correlation analysis showed that grain yield and N concentration in the stem,leaf and grain were significantly positively correlated.There was also a significantly or extremely significantly positive correlation between Zn concentration in the leaf and N concentration in the sheath and grain,between Zn concentration in the cob and N concentration in the sheath,cob and bract.These results suggested that combination of N and Zn fertilizers could increase yield and plant dry matter accumulation,enhance the N and Zn absorption and accumulation in each organ especially grain,but decrease distribution ratio of N and Zn in the grain.

Key words: Summer maize, Combination of N and Zn fertilizers, Yield, Dry matter, Accumulation and distribution

ZHANG Panpan, SHAO Yunhui, LIU Jingbao, QIAO Jiangfang, LI Chuan, ZHANG Meiwei, ZHAO Xia, HUANG Lu. Effect of Nitrogen and Zinc Application on the Accumulation and Distribution of Dry Matter and Nitrogen and Zinc of Different Summer Maize Varieties[J]. Acta Agriculturae Boreali-Sinica, 2022, 37(2): 96-103. doi: 10.7668/hbnxb.20192579.

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Figures/Tables 7

References 23

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氮处理 Nitrogen treatment	锌处理 Zinc treatment	品种 Variety	氮含量/(g/kg) N concentration						锌含量/(mg/kg) Zn concentration
氮处理 Nitrogen treatment	锌处理 Zinc treatment	品种 Variety	茎 Stem	叶 Leaf	鞘 Sheath	穗轴 Cob	苞叶 Bract	籽粒 Grain	茎 Stem	叶 Leaf	鞘 Sheath	穗轴 Cob	苞叶 Bract	籽粒 Grain
N1	Zn0	ZD958	3.3±0.1de	5.6±0.1g	3.5±0.0fg	2.2±0.1efg	3.2±0.1de	11.3±0.4e	19.2±0.5def	23.4±0.7ef	18.4±0.4def	22.4±0.5def	13.0±0.1def	23.5±0.7bc
		GSY66	2.9±0.1ef	13.2±0.2de	4.5±0.1cde	2.8±0.1def	3.5±0.1cde	12.2±0.3cd	23.5±0.8cde	35.8±0.4cd	15.8±0.6ef	23.2±0.8cde	22.2±0.4cde	27.1±0.8ab
	Zn1	ZD958	3.8±0.1fg	6.1±0.1g	3.2±0.0g	5.0±0.1a	4.6±0.2abc	12.1±0.2cd	16.9±0.7de	36.0±1.1cd	39.6±0.9abc	36.3±0.8bc	33.0±0.1bc	28.9±0.6ab
		GSY66	3.0±0.0de	11.8±0.4def	4.0±0.1ef	2.5±0.1ef	3.8±0.1bcd	12.1±0.2cde	34.3±1.2bcd	57.0±1.5ab	36.3±0.9bcd	36.5±0.9bc	35.5±1.1abc	29.3±1.0ab
N2	Zn0	ZD958	5.9±0.2b	15.3±0.4abc	3.8±0.1efg	2.4±0.1ef	3.2±0.1de	13.4±0.3bc	16.3±0.5de	24.9±0.9ef	12.2±0.5fg	24.0±0.6cde	11.6±0.3ef	24.4±0.5bc
		GSY66	2.5±0.1efg	14.6±0.5cd	4.9±0.2bcd	1.8±0.1fg	3.4±0.1cde	14.8±0.4b	29.2±0.3cd	46.5±1.0bc	22.0±0.8cde	22.7±0.5def	18.0±0.6de	23.9±0.6bc
	Zn1	ZD958	7.4±0.1a	14.5±0.4cd	5.3±0.2abc	4.4±0.1bc	4.7±0.1ab	14.1±0.2bc	11.4±0.4ef	41.1±1.3bcd	18.3±0.5def	45.3±0.6a	22.9±0.5cde	31.6±0.1a
		GSY66	5.3±0.1bc	16.5±0.3ab	6.6±0.1a	3.1±0.1cd	4.6±0.2abc	17.1±0.3a	42.4±0.7ab	60.0±2.3a	41.7±1.1ab	39.5±0.8ab	42.3±1.1a	27.7±0.6ab
N3	Zn0	ZD958	5.7±0.1b	12.7±0.2de	3.6±0.1fg	2.4±0.1ef	3.0±0.1def	11.8±0.3de	29.4±0.8cd	26.8±0.7def	13.3±0.3fg	35.5±1.0c	16.1±0.5de	20.8±0.1cd
		GSY66	4.0±0.1d	12.7±0.4de	4.3±0.1de	2.3±0.1efg	2.7±0.1ef	12.7±0.3bcd	40.8±1.2abc	47.0±0.9bc	19.2±0.3de	19.7±0.3ef	10.8±0.4ef	21.4±0.4bcd
	Zn1	ZD958	5.8±0.2b	17.9±0.4a	5.2±0.1bc	3.2±0.1bcd	4.9±0.1a	12.8±0.3bcd	19.4±0.6def	36.0±0.5cd	23.9±0.7cde	43.8±1.5a	30.9±0.6bcd	20.4±0.3cd
		GSY66	5.2±0.2bc	14.8±0.6bcd	5.8±0.2ab	2.8±0.1def	4.5±0.1bcd	16.9±0.2a	45.8±1.6a	65.0±1.3a	44.4±1.3a	24.9±0.4cde	39.1±0.8ab	28.6±1.0ab

氮处理 Nitrogen treatment	锌处理 Zinc treatment	品种 Variety	氮含量/(g/kg) N concentration						锌含量/(mg/kg) Zn concentration
氮处理 Nitrogen treatment	锌处理 Zinc treatment	品种 Variety	茎 Stem	叶 Leaf	鞘 Sheath	穗轴 Cob	苞叶 Bract	籽粒 Grain	茎 Stem	叶 Leaf	鞘 Sheath	穗轴 Cob	苞叶 Bract	籽粒 Grain
N1	Zn0	ZD958	3.3±0.1de	5.6±0.1g	3.5±0.0fg	2.2±0.1efg	3.2±0.1de	11.3±0.4e	19.2±0.5def	23.4±0.7ef	18.4±0.4def	22.4±0.5def	13.0±0.1def	23.5±0.7bc
		GSY66	2.9±0.1ef	13.2±0.2de	4.5±0.1cde	2.8±0.1def	3.5±0.1cde	12.2±0.3cd	23.5±0.8cde	35.8±0.4cd	15.8±0.6ef	23.2±0.8cde	22.2±0.4cde	27.1±0.8ab
	Zn1	ZD958	3.8±0.1fg	6.1±0.1g	3.2±0.0g	5.0±0.1a	4.6±0.2abc	12.1±0.2cd	16.9±0.7de	36.0±1.1cd	39.6±0.9abc	36.3±0.8bc	33.0±0.1bc	28.9±0.6ab
		GSY66	3.0±0.0de	11.8±0.4def	4.0±0.1ef	2.5±0.1ef	3.8±0.1bcd	12.1±0.2cde	34.3±1.2bcd	57.0±1.5ab	36.3±0.9bcd	36.5±0.9bc	35.5±1.1abc	29.3±1.0ab
N2	Zn0	ZD958	5.9±0.2b	15.3±0.4abc	3.8±0.1efg	2.4±0.1ef	3.2±0.1de	13.4±0.3bc	16.3±0.5de	24.9±0.9ef	12.2±0.5fg	24.0±0.6cde	11.6±0.3ef	24.4±0.5bc
		GSY66	2.5±0.1efg	14.6±0.5cd	4.9±0.2bcd	1.8±0.1fg	3.4±0.1cde	14.8±0.4b	29.2±0.3cd	46.5±1.0bc	22.0±0.8cde	22.7±0.5def	18.0±0.6de	23.9±0.6bc
	Zn1	ZD958	7.4±0.1a	14.5±0.4cd	5.3±0.2abc	4.4±0.1bc	4.7±0.1ab	14.1±0.2bc	11.4±0.4ef	41.1±1.3bcd	18.3±0.5def	45.3±0.6a	22.9±0.5cde	31.6±0.1a
		GSY66	5.3±0.1bc	16.5±0.3ab	6.6±0.1a	3.1±0.1cd	4.6±0.2abc	17.1±0.3a	42.4±0.7ab	60.0±2.3a	41.7±1.1ab	39.5±0.8ab	42.3±1.1a	27.7±0.6ab
N3	Zn0	ZD958	5.7±0.1b	12.7±0.2de	3.6±0.1fg	2.4±0.1ef	3.0±0.1def	11.8±0.3de	29.4±0.8cd	26.8±0.7def	13.3±0.3fg	35.5±1.0c	16.1±0.5de	20.8±0.1cd
		GSY66	4.0±0.1d	12.7±0.4de	4.3±0.1de	2.3±0.1efg	2.7±0.1ef	12.7±0.3bcd	40.8±1.2abc	47.0±0.9bc	19.2±0.3de	19.7±0.3ef	10.8±0.4ef	21.4±0.4bcd
	Zn1	ZD958	5.8±0.2b	17.9±0.4a	5.2±0.1bc	3.2±0.1bcd	4.9±0.1a	12.8±0.3bcd	19.4±0.6def	36.0±0.5cd	23.9±0.7cde	43.8±1.5a	30.9±0.6bcd	20.4±0.3cd
		GSY66	5.2±0.2bc	14.8±0.6bcd	5.8±0.2ab	2.8±0.1def	4.5±0.1bcd	16.9±0.2a	45.8±1.6a	65.0±1.3a	44.4±1.3a	24.9±0.4cde	39.1±0.8ab	28.6±1.0ab

项目 Item	产量 Yield	茎N Stem N	叶N Leaf N	鞘N Sheath N	穗轴N Cob N	苞叶N Bract N	籽粒N Grain N
产量 Yield	1.000	0.655^*	0.617^*	0.422	-0.002	0.278	0.424^*
茎Zn Stem Zn	0.092	0.230	0.254	0.463	-0.450	-0.139	0.532
叶Zn Leaf Zn	0.105	-0.086	0.361	0.696^*	-0.170	0.375	0.720^**
鞘Zn Sheath Zn	0.053	-0.113	0.038	0.423	0.330	0.597^*	0.540
穗轴Zn Cob Zn	0.174	0.584^*	0.246	0.272	0.635^*	0.744^**	0.073
苞叶Zn Bract Zn	-0.002	0.080	0.211	0.567	0.410	0.791^**	0.533
籽粒Zn Grain Zn	-0.326	0.085	-0.115	0.255	0.556	-0.521	0.348

项目 Item	产量 Yield	茎N Stem N	叶N Leaf N	鞘N Sheath N	穗轴N Cob N	苞叶N Bract N	籽粒N Grain N
产量 Yield	1.000	0.655^*	0.617^*	0.422	-0.002	0.278	0.424^*
茎Zn Stem Zn	0.092	0.230	0.254	0.463	-0.450	-0.139	0.532
叶Zn Leaf Zn	0.105	-0.086	0.361	0.696^*	-0.170	0.375	0.720^**
鞘Zn Sheath Zn	0.053	-0.113	0.038	0.423	0.330	0.597^*	0.540
穗轴Zn Cob Zn	0.174	0.584^*	0.246	0.272	0.635^*	0.744^**	0.073
苞叶Zn Bract Zn	-0.002	0.080	0.211	0.567	0.410	0.791^**	0.533
籽粒Zn Grain Zn	-0.326	0.085	-0.115	0.255	0.556	-0.521	0.348

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