施氮量、种植密度和留叶数对湘西烟区湘烟7号产量和质量的影响

doi:10.16035/j.issn.1001-7283.2025.01.022

Abstract

Abstract:

In order to determine the supporting cultivation techniques of the new flue-cured tobacco variety “Xiangyan 7” in tobacco-growing area of western Hunan, the nitrogen application rate (N1: 112.5 kg/ha; N2: 135.0 kg/ha; N3: 157.5 kg/ha), planting density (D1: 15 150 plants/ha; D2: 16 665 plants/ha; D3: 18 510 plants/ha) and the number of leaves retained (L1: 14 pieces; L2: 16 pieces; L3: 18 pieces) on yield, output value, chemical composition content and physical properties of “Xiangyan 7” tobacco leaves. The results showed that with the increase of nitrogen application, the yield and output value of tobacco leaves increased, the contents of total nitrogen and nicotine increased, and the contents of total sugar and reducing sugar decreased. With the increase of planting density, the yield, output value and the proportion of superior tobacco first decreased and then increased, and the high density led to the uncoordinated chemical composition of the middle leaves. With the increase of the number of leaves retained, the yield and output value of tobacco increased, the average price and proportion of superior tobacco decreased significantly, the content of nicotine decreased, and the contents of total sugar and reducing sugar increased. Treatment 7 (nitrogen application rate was 157.5 kg/ha, planting density was 15 150 plants/ha, number of leaves retained was 18) showed the best economic performance. The chemical composition and physical properties of C3F and B2F tobacco were better in treatments 7 and 9 (nitrogen application rate was 157.5 kg/ha, planting density was 18 510 plants/ha, number of leaves retained was 16). According to the combination of economic characteristics, chemical composition and physical characteristics of tobacco leaves, the appropriate cultivation techniques for Xiangyan 7 in tobacco area of western Hunan were nitrogen application rate of 157.5 kg/ha, planting density of 15 150 plants/ha and number of leaves retained of 18.

Key words: Xiangyan 7, Tobacco region of western Hunan, Nitrogen application rate, Planting density, Number of leaves retained, Yield, Quality

Zhu Zijian, Chen Nana, Wu Yueying, Rang Zhongwen, Dai Linjian, Tian Minghui, Tian Feng, Yi Zhenxie. Effects of Nitrogen Application Rate, Planting Density and Retained Leaf Number on Yield and Quality of Xiangyan 7 in Tobacco Region of Western Hunan[J].Crops, 2025, 41(1): 179-186.

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References 21

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施氮量 Nitrogen application rate	烟草专用基肥 Tobacco base fertilizer	硫酸钾 Potassium sulfate	有机肥 Organic fertilizer	提苗肥 Seedling fertilizer	烟草专用追肥 Tobacco topdressing
N1	750	375	225	75	300.0
N2	750	375	225	75	517.5
N3	750	375	225	75	742.5

指标Index	100	100~90	90~80	80~70	70~60	<60
烟碱Nicotine (%)	2.20~2.80	2.20~2.00	2.00~1.80	1.80~1.70	1.70~1.60	<1.60
		2.80~2.90	2.90~3.00	3.00~3.10	3.10~3.20	>3.20
总氮Total nitrogen (%)	2.00~2.50	2.50~2.60	2.60~2.70	2.70~2.80	2.80~2.90	>2.90
		2.00~1.90	1.90~1.80	1.80~1.70	1.70~1.60	<1.60
还原糖Reducing sugar (%)	18.00~22.00	18.00~16.00	16.00~14.00	14.00~13.00	13.00~12.00	<12.00
		22.00~24.00	24.00~26.00	26.00~27.00	27.00~28.00	>28.00
糖碱比Sugar/alkali	8.5~9.5	8.50~7.00	7.00~6.00	6.00~5.50	5.50~5.00	<5.00
		9.50~12.00	12.00~13.00	13.00~14.00	14.00~15.00	>15.00
氮碱比Nitrogen/alkali	0.95~1.05	0.95~0.80	0.80~0.70	0.70~0.65	0.65~0.60	<0.60
		1.05~1.20	1.20~1.30	1.30~1.35	1.35~1.40	>1.40

处理 Treatment	C3F						B2F
处理 Treatment	总氮 Total nitrogen (%)	烟碱 Nicotine (%)	总糖 Total sugar (%)	还原糖 Reducing sugar (%)	糖碱比 Sugar/ alkali	氮碱比 Nitrogen/ alkali	总氮 Total nitrogen (%)	烟碱 Nicotine (%)	总糖 Total sugar (%)	还原糖 Reducing sugar (%)	糖碱比 Sugar/ alkali	氮碱比 Nitrogen/ alkali
1	1.93de	2.05abc	29.41a	22.43ab	10.94	0.94	2.02ab	3.19d	20.30ab	16.60ef	5.20	0.63
2	1.86e	2.07abc	28.22a	23.67ab	11.43	0.90	1.93b	2.53f	22.03ab	19.52b	7.72	0.76
3	1.94cd	1.82c	28.46a	23.89a	13.13	1.07	2.02ab	2.90e	23.94a	18.84bcd	6.50	0.69
4	2.04b	2.09abc	24.51bc	23.15ab	11.08	0.98	2.11a	3.78ab	21.65ab	17.47de	4.62	0.56
5	1.99bcd	2.22ab	25.37b	22.31b	10.05	0.90	2.10a	3.60bc	23.29ab	22.82a	6.34	0.58
6	2.01bc	1.92bc	29.33a	22.88ab	11.92	1.05	2.03ab	3.50c	21.74ab	17.89cde	5.11	0.58
7	2.14a	2.37a	25.10b	19.06c	8.04	0.90	2.15a	3.40cd	20.26b	19.04bc	5.60	0.63
8	2.08b	2.38a	21.91d	19.40c	8.15	0.87	2.08a	3.98a	16.50c	15.43f	3.88	0.52
9	1.99bcd	2.27a	23.37cd	19.73c	8.69	0.88	2.04ab	2.64ef	22.64ab	19.37b	7.33	0.77

栽培因子 Cultivation factor	C3F						B2F
栽培因子 Cultivation factor	总氮 Total nitrogen (%)	烟碱 Nicotine (%)	总糖 Total sugar (%)	还原糖 Reducing sugar (%)	糖碱比 Sugar/ alkali	氮碱比 Nitrogen/ alkali	总氮 Total nitrogen (%)	烟碱 Nicotine (%)	总糖 Total sugar (%)	还原糖 Reducing sugar (%)	糖碱比 Sugar/ alkali	氮碱比 Nitrogen/ alkali
N1	1.91c	1.98b	28.70a	23.33a	11.91a	0.98a	1.99b	2.88c	22.09a	18.32ab	6.48a	0.70a
N2	2.01b	2.08b	26.40b	22.78a	11.05a	0.98a	2.08a	3.63a	22.23a	19.39a	5.34b	0.57c
N3	2.07a	2.34a	23.46c	19.40b	8.34b	0.89b	2.09a	3.34b	19.80b	17.85b	5.61b	0.64b
D1	2.04a	2.17a	26.34ab	21.55a	10.04b	0.94ab	2.09a	3.46a	20.74ab	17.70b	5.15b	0.61b
D2	1.97b	2.22a	25.17b	21.79a	9.90b	0.89b	2.04a	3.37a	20.61b	19.26a	5.98a	0.62b
D3	1.98b	2.00b	27.05a	22.17a	11.36a	1.01a	2.03a	3.02b	22.77a	18.70ab	6.33a	0.68a
L1	2.00ab	2.12a	26.88a	21.57a	10.34a	0.95a	2.04a	3.56a	19.52b	16.64b	4.74b	0.58c
L2	1.96b	2.14a	25.37a	22.18a	10.47a	0.92a	2.03a	2.98c	22.11a	18.79a	6.55a	0.70a
L3	2.02a	2.14a	26.31a	21.75a	10.50a	0.96a	2.09a	3.30b	22.50a	20.23a	6.16a	0.64b
极差Range
N	0.16	0.36	5.24	3.93	3.57	0.09	0.10	0.75	2.29	1.54	1.14	0.13
D	0.07	0.22	1.88	0.62	1.46	0.12	0.06	0.44	2.16	1.56	1.18	0.07
L	0.06	0.02	1.51	0.61	0.16	0.04	0.06	0.58	2.89	3.59	1.81	0.12

处理 Treatment	C3F				B2F
处理 Treatment	含梗率 Stem ratio (%)	含水率 Moisture content (%)	单叶重 Single leaf weight (g)	单叶叶面积 Single leaf area (cm²)	含梗率 Stem ratio (%)	含水率 Moisture content (%)	单叶重 Single leaf weight (g)	单叶叶面积 Single leaf area (cm²)
1	29.45b	14.64a	8.32de	896.25ab	26.02bcd	12.99abc	12.52a	736.84ab
2	25.73d	13.94abc	9.79b	836.05de	26.81ab	13.16ab	9.21cd	646.80cd
3	28.93b	13.91abc	7.42e	808.31e	26.45abc	12.23c	8.81d	629.27d
4	29.68b	14.47ab	9.33bc	850.04cd	27.72a	12.81bc	10.94ab	727.84ab
5	26.02d	14.05abc	9.46bc	796.60e	24.58d	13.79a	8.06d	724.27b
6	27.81c	14.10abc	8.58cd	888.68abc	27.34ab	12.80bc	11.22ab	733.62ab
7	25.85d	13.36c	10.02b	858.13bcd	27.58ab	12.88bc	10.64bc	667.50cd
8	30.75a	14.32ab	8.19de	906.38a	28.09a	12.85bc	10.95ab	766.27a
9	24.40e	13.87bc	11.13a	874.04abcd	25.21cd	12.89bc	11.01ab	670.78c

Effects of Nitrogen Application Rate, Planting Density and Retained Leaf Number on Yield and Quality of Xiangyan 7 in Tobacco Region of Western Hunan

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