HUBEI AGRICULTURAL SCIENCES ›› 2025, Vol. 64 ›› Issue (12): 72-77.doi: 10.14088/j.cnki.issn0439-8114.2025.12.013

• Resource & Environment • Previous Articles     Next Articles

Effects of rapeseed cake fertilizer replacing iso-nitrogen fertilizer on rhizosphere soil fertility and yield and quality of flue-cured tobacco

ZHANG Hai-wei1, WANG Nian-lei1, DING De-sheng2, ZHANG Xiong-feng1, XIA Hao3, LI Zhuo1, LI Hui-lan3, ZHAO Zun-kang4   

  1. 1. Jiangxi Institute of Tobacco Science, Nanchang 330025, China;
    2. Ruijin Branch Company of Ganzhou Municipal Tobacco Company, Ruijin 342500, Jiangxi, China;
    3. Xiajiang Branch Company of Ji’an Municipal Tobacco Company, Xiajiang 331400, Jiangxi, China;
    4. Key Laboratory of Poyang Lake Watershed Agricultural Resources and Ecology, Ministry of Agriculture and Rural Affairs/School of Land Resource and Environment, Jiangxi Agricultural University, Nanchang 330045, China
  • Received:2025-05-21 Published:2025-12-30

Abstract: In order to explore the suitable application mode of organic fertilizer and chemical fertilizer in Jiangxi tobacco-growing area, randomized block experiment design was introduced to study the effects of rapeseed cake replacing iso-nitrogen fertilizer on soil physico-chemical properties, leaf growth, yield and quality of tobacco at two sites in Ruijin City and Xiajiang County. The results showed that the substitution of chemical fertilizer nitrogen with rapeseed cake fertilizer at proportions of 15% to 35% could improve the rhizosphere soil nutrients and microbial environment of flue-cured tobacco in different extents. The contents of soil organic matter, alkali-hydrolyzed nitrogen, available phosphorus and available potassium at the two test sites were 3.18%-10.79%, 2.56%-23.39%, 7.51%-33.86%, and 5.12%-25.12% higher than those of the single application of chemical fertilizer, respectively. The number of soil bacteria increased by 13.62%-46.16%, the number of actinomyces increased by 12.64%-45.30%, and the number of fungi decreased by 8.73%-23.12%. Compared with single fertilizer application, the yield, output value, aroma substance content and sensory quality of tobacco leaves increased when the equal proportion of rapeseed cake fertilizer replaced 15%-25% of chemical fertilizer nitrogen, but the yield of tobacco leaves decreased when 35% of chemical fertilizer nitrogen was replaced. The total amount of aroma substances in tobacco leaves was significantly positively correlated with soil organic matter content, the number of bacteria and actinomycetes, and the sensory quality of tobacco leaves. Therefore, the replacement of 15%-25% nitrogen fertilizer with rapeseed cake fertilizer was beneficial to improve soil fertility and tobacco yield and quality in Jiangxi Province.

Key words: flue-cured tobacco, rapeseed cake fertilizer, iso-nitrogenous replacement, soil fertility, yield and quality

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