Effects of Planting Densities on Yield and Main Agronomic Traits of New Sweet-waxy Maize Varieties

doi:10.11924/j.issn.1000-6850.casb2024-0474

Abstract

Abstract:

The aim of this study was to provide scientific guidance for the promotion and cultivation of new sweet-waxy maize varieties. In order to explore the effects of different planting densities on the yield and main agronomic traits, in this experiment, the sweet-waxy maize varieties ‘Guitiannuo 108’ and ‘Guitiannuo 189’ were used as experimental materials, and five density levels were set as 40000, 46667, 53333, 60000 and 66667 plants/hm², as well as two sowing dates in spring and autumn. The results showed that the yield per plant, ear length, ear diameter and stem diameter decreased with the increase of planting density; while the yield per unit area and cob tip bald length increased with the increase of planting density. Considering yield and economic benefits comprehensively, the reasonable planting density for ‘Guitiannuo 108’ and ‘Guitiannuo 189’ in Guangxi is 46667-53333 plants/hm².

Key words: ‘Guitiannuo 108’, ‘Guitiannuo 189’, planting density, sweet-waxy maize, yield, agronomic traits, economic benefits, Guangxi

WANG Yuhao, MENG Yunfei, HE Nannan, WEI Guiwang, WEI Aijuan, WANG Shan, FENG Yungan. Effects of Planting Densities on Yield and Main Agronomic Traits of New Sweet-waxy Maize Varieties[J]. Chinese Agricultural Science Bulletin, 2025, 41(10): 1-6.

Figures/Tables 9

References 25

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品种	种植密度	2020年秋季			2021年春季
品种	种植密度	株高/cm	穗位高/cm	茎粗/mm	株高/cm	穗位高/cm
A₁	D₁	214.08±0.51a	85.08±1.13a	21.36±0.16a	225.80	94.07
	D₂	219.30±3.28a	89.10±2.68a	19.97±0.42ab	226.73	94.67
	D₃	217.48±3.75a	86.92±1.18a	18.97±0.15b	222.86	93.07
	D₄	221.65±0.87a	93.33±1.22a	19.04±0.29b	220.87	95.60
	D₅	223.57±2.86a	93.83±2.56a	18.49±0.65b	220.40	89.33
A₂	D₁	222.37±4.48a	88.62±3.62a	19.10±0.51a	243.80	105.33
	D₂	221.73±0.95a	91.22±1.05a	18.94±0.14a	238.40	100.00
	D₃	224.20±1.66a	95.27±1.89a	18.92±0.11a	235.53	99.13
	D₄	225.67±2.45a	94.12±3.28a	18.17±0.40a	233.00	94.20
	D₅	225.25±2.24a	92.68±1.21a	18.05±0.06a	236.50	101.53

品种	种植密度	2020年秋季			2021年春季
品种	种植密度	株高/cm	穗位高/cm	茎粗/mm	株高/cm	穗位高/cm
A₁	D₁	214.08±0.51a	85.08±1.13a	21.36±0.16a	225.80	94.07
	D₂	219.30±3.28a	89.10±2.68a	19.97±0.42ab	226.73	94.67
	D₃	217.48±3.75a	86.92±1.18a	18.97±0.15b	222.86	93.07
	D₄	221.65±0.87a	93.33±1.22a	19.04±0.29b	220.87	95.60
	D₅	223.57±2.86a	93.83±2.56a	18.49±0.65b	220.40	89.33
A₂	D₁	222.37±4.48a	88.62±3.62a	19.10±0.51a	243.80	105.33
	D₂	221.73±0.95a	91.22±1.05a	18.94±0.14a	238.40	100.00
	D₃	224.20±1.66a	95.27±1.89a	18.92±0.11a	235.53	99.13
	D₄	225.67±2.45a	94.12±3.28a	18.17±0.40a	233.00	94.20
	D₅	225.25±2.24a	92.68±1.21a	18.05±0.06a	236.50	101.53

品种	种植密度	2020年秋季			2021年春季
品种	种植密度	穗长/cm	穗粗/cm	秃尖长/cm	穗长/cm	穗粗/cm	秃尖长/cm
A₁	D₁	16.38±0.40a	4.97±0.02a	0.12±0.04b	18.60	5.02	0
	D₂	15.80±0.51a	4.78±0.10ab	0.12±0.09b	18.18	4.97	0.03
	D₃	15.59±0.59a	4.78±0.02ab	0.44±0.08ab	17.20	4.91	0.10
	D₄	14.92±0.35a	4.68±0.02ab	0.60±0.04a	17.37	4.92	0.81
	D₅	12.87±1.80a	4.48±0.12b	0.33±0.07ab	16.52	4.91	0.93
A₂	D₁	17.72±0.05a	4.72±0.05a	1.15±0.09b	19.37	4.86	0.13
	D₂	17.45±0.17a	4.67±0.07a	1.20±0.20b	19.40	4.85	0.20
	D₃	16.35±0.25b	4.70±0.08a	1.90±0.07ab	18.93	4.75	1.05
	D₄	15.60±0.25b	4.52±0.02a	2.07±0.21a	19.27	4.73	1.13
	D₅	15.40±0.12b	4.48±0.05a	2.30±0.16a	18.77	4.78	1.34

品种	种植密度	2020年秋季			2021年春季
品种	种植密度	穗长/cm	穗粗/cm	秃尖长/cm	穗长/cm	穗粗/cm	秃尖长/cm
A₁	D₁	16.38±0.40a	4.97±0.02a	0.12±0.04b	18.60	5.02	0
	D₂	15.80±0.51a	4.78±0.10ab	0.12±0.09b	18.18	4.97	0.03
	D₃	15.59±0.59a	4.78±0.02ab	0.44±0.08ab	17.20	4.91	0.10
	D₄	14.92±0.35a	4.68±0.02ab	0.60±0.04a	17.37	4.92	0.81
	D₅	12.87±1.80a	4.48±0.12b	0.33±0.07ab	16.52	4.91	0.93
A₂	D₁	17.72±0.05a	4.72±0.05a	1.15±0.09b	19.37	4.86	0.13
	D₂	17.45±0.17a	4.67±0.07a	1.20±0.20b	19.40	4.85	0.20
	D₃	16.35±0.25b	4.70±0.08a	1.90±0.07ab	18.93	4.75	1.05
	D₄	15.60±0.25b	4.52±0.02a	2.07±0.21a	19.27	4.73	1.13
	D₅	15.40±0.12b	4.48±0.05a	2.30±0.16a	18.77	4.78	1.34

品种	种植密度	单株生物产量	单株鲜苞产量	单株鲜穗产量
A₁	D₁	0.81±0.03a	0.28±0.01a	0.23±0.00a
	D₂	0.69±0.04ab	0.27±0.01a	0.21±0.01a
	D₃	0.61±0.01bc	0.24±0.00b	0.19±0.00b
	D₄	0.56±0.03bc	0.22±0.00bc	0.18±0.00b
	D₅	0.50±0.02c	0.21±0.00c	0.18±0.00b
A₂	D₁	0.66±0.02a	0.27±0.01a	0.21±0.01a
	D₂	0.64±0.01a	0.26±0.00ab	0.20±0.00ab
	D₃	0.60±0.02a	0.23±0.01bc	0.18±0.00bc
	D₄	0.55±0.02a	0.22±0.00c	0.17±0.00c
	D₅	0.55±0.03a	0.22±0.01c	0.17±0.01c