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Journal of Agriculture ›› 2026, Vol. 16 ›› Issue (2): 39-45.doi: 10.11923/j.issn.2095-4050.cjas2024-0191

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

WANG Panyu1(), WANG Yong2(), CHEN Yulan3, XU Qiang1, LI Bing1, CAI Yan1   

  1. 1 College of Resources, Sichuan Agricultural University, Chengdu 611130
    2 Yuexi Branch of Liangshan Prefecture Company, Sichuan Tobacco Company, Yuexi, Sichuan 616650
    3 Liangshan Prefecture Company, Sichuan Tobacco Company, Xichang, Sichuan 615000
  • Received:2024-09-30 Revised:2025-05-14 Online:2026-02-20 Published:2026-02-12

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