Acta Agriculturae Zhejiangensis ›› 2026, Vol. 38 ›› Issue (3): 450-459.DOI: 10.3969/j.issn.1004-1524.20250354

• Crop Science • Previous Articles     Next Articles

Effects of chemical fertilizer reduction and organic fertilizer application on the growth, nutrient uptake and utilization of flue-cured tobacco cultivar Guiyan5 in Zunyi tobacco area of China

JIN Hui1(), HUO Qinjian2, SHI Yuewei2, LONG Mingjin2, YANG Minghua1, YANG Minmin1, GAN Songmei1, LIAN Yun1, LIU Jinliang1,*(), REN Xueliang2,*()   

  1. 1. Guizhou Provincial Key Laboratory for Tobacco Quality Improvement and Efficiency Enhancement, College of Tobacco Science, Guizhou University, Guiyang 550025, China
    2. Molecular Genetics Key Laboratory of China Tobacco, Guizhou Academy of Tobacco Science, Guiyang 550081, China
  • Received:2025-05-02 Online:2026-03-25 Published:2026-04-17
  • Contact: LIU Jinliang,REN Xueliang

Abstract:

To explore the effects of chemical fertilizer reduction combined with organic fertilizer application on the growth, nutrient uptake and utilization of flue-cured tobacco, a field experiment was conducted using a two-factor randomized complete block design with a new flue-cured tobacco cultivar, Guiyan5, as the test material. Three chemical fertilizer application levels were set: A1 (conventional fertilization), A2 (reduction rate of 20%), and A3 (reduction rate of 40%), along with two organic fertilizer application levels: B1 (750 kg·hm-2) and B2 (2 250 kg·hm-2). Changes in growth, dry matter accumulation and partition, as well as nutrient uptake, accumulation and partition of flue-cured tobacco under different treatments were analyzed. The results showed that chemical fertilizer reduction combined with organic fertilizer application had no significant effects on the agronomic traits of Guiyan5 at the topping stage, including natural plant height, natural leaf number, topped plant height, retained leaf number, stem circumference, internode length, maximum leaf length, and maximum leaf width. Among all treatments, the dry matter accumulation of root, stem, and the whole plant, the nitrogen and phosphorus accumulation in root, and the phosphorus and potassium accumulation in stem under the A2B2 treatment at the topping stage were significantly (p<0.05) higher than those under the A3B1 treatment. At the same organic fertilizer application level, the agronomic efficiencies of nitrogen, phosphorus, and potassium fertilizers in the A3 treatment were significantly higher than those in the A1 treatment. Overall, the recommended fertilization scheme for Guiyan5 in production is a 20% reduction in chemical fertilizers based on conventional fertilization combined with 2 250 kg·hm-2 of organic fertilizer. This scheme can reduce chemical fertilizer input while improving the nutrient uptake and utilization efficiency of tobacco plants.

Key words: flue-cured tobacco, chemical fertilizer reduction, combined application of organic fertilizer, nutrient uptake and utilization, Guiyan5

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