Journal of Zhejiang Agricultural Sciences ›› 2026, Vol. 67 ›› Issue (2): 337-345.DOI: 10.16178/j.issn.0528-9017.20240712

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Effects of the interaction between irrigation method and potassium fertilizer on the growth and quality of flue-cured tobacco

SHI Jiuchang1(), LIANG Jiacheng2, JIAO Jinghua3, WANG Weimin1, LI Qiujian1, HAN Dan2, XU Zicheng2, ZHANG Li1()   

  1. 1.Zhejiang Tobacco Industry Co.,Ltd.,Hangzhou 310000,Zhejiang
    2.College of Tobacco,Henan Agricultural University,Zhengzhou 450002,Henan
    3.Liaoning Provincial Tobacco Company,Shenyang 110062,Liaoning
  • Received:2024-09-04 Online:2026-02-28 Published:2026-03-07

Abstract:

This study adopted a split zone experimental design,with the main factors being B1 ditch irrigation and B2 drip irrigation,and the secondary factors being A1 spraying with clean water,A2 spraying with potassium fertilizer,and A3 spraying with potassium fertilizer and sucrose fatty acid esters. The effects of the interaction between irrigation method and potassium fertilizer on growth of flue-cured tobacco and agronomic traits,appearance quality,physical characteristics,chemical composition and sensory quality of tobacco leaves were studied. The results showed that after 75 days of transplantation,the maximum leaf area of tobacco significantly(p<0.05)increased by 23.20% and 21.42% under the ditch irrigation method of spraying with potassium fertilizer and spraying with potassium fertilizer and sucrose fatty acid ester treatments compared with spraying with clean water. When transplanted for 105 days,the plant height of tobacco significantly increased by 6.14% and 4.57% under the ditch irrigation method of spraying with potassium fertilizer and spraying with potassium fertilizer and sucrose fatty acid ester treatments compared with spraying with clean water. Under the drip irrigation method,the potassium chloride ratio of tobacco sprayed with potassium fertilizer and sucrose fatty acid ester significantly increased by 121.72% compared with spraying with clean water. Regardless of the irrigation method,tobacco leaves sprayed with potassium fertilizer and sucrose fatty acid esters had more oil content,better appearance quality,loose leaf structure,and better maturity. In summary,under the ditch irrigation method,spraying with potassium fertilizer and sucrose fatty acid ester treatment can promote the growth of tobacco. Under the drip irrigation method,spraying with potassium fertilizer and sucrose fatty acid ester treatment can improve the quality of tobacco leaves.

Key words: flue-cured tobacco, irrigation method, potassium fertilizer, potassium chloride ratio

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