Effects of Carbon-based Organic Fertilizer on Fertility Characteristics of Red Soil and Growth of Flue-cured Tobacco

doi:10.11923/j.issn.2095-4050.cjas2024-0191

Abstract

Abstract:

The study aims to explore the effects of carbon-based organic fertilizer on the fertility characteristics of red soil and flue-cured tobacco growth, and to determine the application effect of carbon-based organic fertilizer in the improvement and cultivation of red soil for tobacco growing and flue-cured tobacco production. Taking the typical tobacco-growing red soil in Panxi area of Sichuan Province as the research object, field experiments were conducted. The effects of treatments, including control (CK, T₁), biochar (T₂), cow manure (T₃), cow manure 50% combined with biochar 50% (T₄) and cow manure 70% combined with biochar 30% (T₅), on soil fertility characteristics and growth characteristics of flue-cured tobacco were determined. The results showed that carbon-based organic fertilizer could better coordinate the soil nutrient balance during the whole growth period of flue-cured tobacco and provide better nutrient support for its growth and development. In the mature stage of flue-cured tobacco, the soil pH value, organic matter and available phosphorus were increased by 0.16-0.22, 28.84%-33.21% and 52.84%-62.19% respectively compared with the T₂ and T₃ treatments. The T₅ treatment significantly increased soil alkali-hydrolyzed nitrogen (P<0.05), while the T₄ treatment significantly increased soil available potassium content (P<0.05). Carbon-based organic fertilizer could promote the growth of flue-cured tobacco, and the plant height increased by 4.13%-16.67% and stem circumference increased by 5.45%-15.79% compared with the T₂ and T₃ treatments. The results of redundancy analysis showed that the growth of flue-cured tobacco was mainly affected by pH and available phosphorus. In conclusion, carbon-based organic fertilizer can adjust the pH of red soil, increase the content of organic matter and available nutrients, balance the nutrient demand of flue-cured tobacco, and promote the growth of flue-cured tobacco.

Key words: red soil, carbon-based organic fertilizer, soil fertility, soil nutrient

WANG Panyu, WANG Yong, CHEN Yulan, XU Qiang, LI Bing, CAI Yan. Effects of Carbon-based Organic Fertilizer on Fertility Characteristics of Red Soil and Growth of Flue-cured Tobacco[J]. Journal of Agriculture, 2026, 16(2): 39-45.

Figures/Tables 9

References 29

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土层/cm	pH	有机质/(g/kg)	碱解氮/(mg/kg)	有效磷/(mg/kg)	速效钾/(mg/kg)
0~20	4.88	16.60	71.20	10.32	55.32
20~40	4.41	12.62	65.40	9.45	52.45

土层/cm	pH	有机质/(g/kg)	碱解氮/(mg/kg)	有效磷/(mg/kg)	速效钾/(mg/kg)
0~20	4.88	16.60	71.20	10.32	55.32
20~40	4.41	12.62	65.40	9.45	52.45

处理	肥料种类	施肥量	烟草专用复混肥 (12-12-25)用量
T₁	CK（无添加）	—	450
T₂	生物炭	3000	450
T₃	腐熟牛粪	3000	450
T₄	腐熟牛粪50%复配生物炭50%	3000	450
T₅	腐熟牛粪70%复配生物炭30 %	3000	450

处理	肥料种类	施肥量	烟草专用复混肥 (12-12-25)用量
T₁	CK（无添加）	—	450
T₂	生物炭	3000	450
T₃	腐熟牛粪	3000	450
T₄	腐熟牛粪50%复配生物炭50%	3000	450
T₅	腐熟牛粪70%复配生物炭30 %	3000	450

土层/cm	处理	团棵期	旺长期	成熟期
0~20	T₁	4.57±0.10 c^*	4.77±0.03 e^*	4.98±0.03 b^*
	T₂	5.18±0.04 a	5.45±0.02 a^*	5.03±0.04 b^*
	T₃	4.66±0.08 c	5.10±0.05 c^*	5.05±0.04 b^*
	T₄	4.93±0.03 b^*	4.94±0.06 d	5.14±0.03 a^*
	T₅	4.84±0.06 b^*	5.32±0.05 b^*	5.20±0.05 a^*
20~40	T₁	4.33±0.01 c	4.70±0.06 d	4.59±0.01 c
	T₂	5.11±0.02 a	5.34±0.03 a	4.61±0.06 c
	T₃	4.63±0.08 b	4.76±0.02 d	4.70±0.06 b
	T₄	4.49±0.04 bc	4.86±0.02 c	4.90±0.02 a
	T₅	4.58±0.09 b	4.95±0.02 b	4.95±0.03 a