Effects of foliar application of potassium fertilizer on Zhongchuan 208 in the western Panzhihua tobacco-growing area

doi:10.16178/j.issn.0528-9017.20240238

Abstract

Abstract:

To determine the optimal potassium fertilizer application rate for the new flue-cured tobacco variety Zhongchuan 208 in the western Panzhihua tobacco-growing area, this study implemented foliar potassium fertilizer treatments. The effects of potassium application were comprehensively evaluated by comparing the agronomic traits, economic characteristics, chemical components, and sensory quality of tobacco leaves under different treatments. The results showed that one application of potassium fertilizer after the vigorous growth stage effectively alleviated potassium deficiency symptoms in Zhongchuan 208 leaves. At the Panzhihua trial site, treatments with two and three applications of potassium fertilizer resulted in higher yield and output value, while one application led to the most harmonious chemical composition and the best sensory quality of cured tobacco leaves. At the Xichang Daxing base, additional potassium application enhanced plant growth; treatments with two and three applications produced higher yields than those with zero or one application, while one application achieved the highest output value. At the Xichang farmer trial site, potassium application increased tobacco yield, with one application resulting in the highest output value and proportion of high quality tobacco. Overall, across the three trial sites, one application of potassium fertilizer during the vigorous growth stage of Zhongchuan 208 not only effectively alleviated potassium deficiency symptoms but also helped increase output value while maintaining good sensory quality of the cured tobacco leaves.

Key words: flue-cured tobacco, Zhongchuan 208, potassium fertilizer, tobacco yield, tobacco quality, western Panzhihua tobacco-growing area

CLC Number:

S572

PAN Xuhao, CHEN Zhiliang, CHANG Aixia, GUAN Yu, ZHANG Zongjin, ZHANG Yu, LUO Chenggang, CAI Xianjie, DU Wei, DENG Yuxiang, GENG Ruimei, YAN Ding. Effects of foliar application of potassium fertilizer on Zhongchuan 208 in the western Panzhihua tobacco-growing area[J]. Journal of Zhejiang Agricultural Sciences, 2025, 66(11): 2607-2611.

Figures/Tables 7

References 19

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处理	第1次喷施	第2次喷施	第3次喷施
T1	清水	清水	清水
T2	0.3% KH₂PO₄	清水	清水
T3	0.3% KH₂PO₄	0.3% KH₂PO₄	清水
T4	0.3% KH₂PO₄	0.3% KH₂PO₄	0.3% KH₂PO₄

处理	第1次喷施	第2次喷施	第3次喷施
T1	清水	清水	清水
T2	0.3% KH₂PO₄	清水	清水
T3	0.3% KH₂PO₄	0.3% KH₂PO₄	清水
T4	0.3% KH₂PO₄	0.3% KH₂PO₄	0.3% KH₂PO₄

试验点	处理	株高/ cm	叶片数	腰叶长/ cm	腰叶宽/ cm	顶叶长/ cm	顶叶宽/ cm
攀枝花	T1	153.2	17.8	77.8	44.5	59.8	21.2
	T2	154.6	18.3	79.4	45.8	62.2	22.4
	T3	155.2	18.9	77.2	43.3	58.8	20.2
	T4	154.6	18.5	79.6	46.2	64.4	23.4
西昌大兴基地	T1	149.6	20.8	75.6	46.4	56.2	19.2
	T2	150.2	20.2	75.7	45.9	56.9	19.8
	T3	148.8	20.0	77.3	47.4	56.5	20.4
	T4	151.0	20.4	77.4	45.7	57.8	20.1
西昌农户	T1	156.0	19.9	76.7	39.2	59.2	20.2
	T2	157.8	20.6	76.7	38.4	58.9	19.6
	T3	155.4	21.0	78.3	40.8	64.5	25.4
	T4	156.8	21.2	80.3	41.4	70.8	27.1

试验点	处理	株高/ cm	叶片数	腰叶长/ cm	腰叶宽/ cm	顶叶长/ cm	顶叶宽/ cm
攀枝花	T1	153.2	17.8	77.8	44.5	59.8	21.2
	T2	154.6	18.3	79.4	45.8	62.2	22.4
	T3	155.2	18.9	77.2	43.3	58.8	20.2
	T4	154.6	18.5	79.6	46.2	64.4	23.4
西昌大兴基地	T1	149.6	20.8	75.6	46.4	56.2	19.2
	T2	150.2	20.2	75.7	45.9	56.9	19.8
	T3	148.8	20.0	77.3	47.4	56.5	20.4
	T4	151.0	20.4	77.4	45.7	57.8	20.1
西昌农户	T1	156.0	19.9	76.7	39.2	59.2	20.2
	T2	157.8	20.6	76.7	38.4	58.9	19.6
	T3	155.4	21.0	78.3	40.8	64.5	25.4
	T4	156.8	21.2	80.3	41.4	70.8	27.1

处理	667 m² 产量/kg	667 m² 产值/元	均价/ (元·kg^-1)	C2F 比例/%	C3F 比例/%	上等烟比例/%	中等烟比例/%	上中等烟比例/%	上部烟比例/%
T1	203.60	5 295.17	26.01	9.23	33.66	54.58	34.05	88.63	29.70
T2	202.93	5 373.85	26.48	11.99	33.21	60.38	29.99	90.37	29.34
T3	205.87	5 724.55	27.81	12.76	35.20	65.15	30.37	95.52	30.66
T4	209.07	5 753.51	27.52	12.44	36.56	65.91	27.51	93.42	29.27