Journal of Zhejiang Agricultural Sciences ›› 2025, Vol. 66 ›› Issue (6): 1363-1368.DOI: 10.16178/j.issn.0528-9017.20250091

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Spatiotemporal variation characteristics and suitability evaluation of soil nutrients in tobacco-growing areas of southwestern Hubei

CHEN Chengli1(), WEN Tao1, ZHANG Fang1, XIONG Tao2, QIN Yongsheng2, WANG Junyong2, ZHOU Yuzi3, LUO Fang4, MA Fanglei1, RAN Juan2,*()   

  1. 1. Jianshi County Tobacco Monopoly Bureau, Enshi Prefecture Tobacco Company, Jianshi 445300, Hubei
    2. Lichuan City Tobacco Monopoly Bureau, Enshi Prefecture Tobacco Company, Lichuan 445400, Hubei
    3. College of Life Science and Technology, Wuhan Polytechnic University, Wuhan 430023, Hubei
    4. Enshi Prefecture Company, Hubei Provincial Tobacco Company, Enshi 445000, Hubei
  • Received:2025-02-12 Online:2025-06-11 Published:2025-06-23

Abstract:

To clarify the spatiotemporal variation characteristics of soil nutrients in tobacco-growing soils in the mountainous areas of southwestern Hubei and optimize tobacco-growing layouts and balanced fertilization practices, 578 tobacco-growing soil samples from 10 townships in Jianshi County were collected and analyzed in 2018 and 2021. The results indicated that, compared with 2018, the soil pH value, organic matter, and total nitrogen content in 2021 decreased by 0.55, 6.06 g·kg-1, and 0.47 g·kg-1, respectively, while the available phosphorus and available potassium content increased by 9.91 and 37.62 mg·kg-1, respectively. The average integrated fertility index in 2021 was 0.72, showing an increase compared with 2018. Based on these findings, measures such as increasing organic fertilizer application and adjusting potassium fertilization methods are recommended to improve soil fertility, enhance potassium utilization efficiency, and increase organic matter and total nitrogen content in Jianshi County's tobacco-growing soils.

Key words: tobacco-growing soil, nutrient content, suitability index, variability analysis

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