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Acta Prataculturae Sinica ›› 2022, Vol. 31 ›› Issue (11): 128-138.DOI: 10.11686/cyxb2021461

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Effects of a ridge-furrow rainfall harvesting system on the growth, development and quality of flue-cured tobacco

Ke-ling CHEN1,2(), De-quan WANG3, Yang LIU3, Yi WANG3, Yu-hai DU3, Chuan-yin DU3, Xing-hua MA1()   

  1. 1.Institute of Tobacco Research,Chinese Academy of Agricultural Sciences,Key Laboratory of Tobacco Biology and Processing,Ministry of Agriculture and Rural Affairs,Qingdao 266101,China
    2.Agricultural College of Qingdao Agricultural University,Qingdao 266109,China
    3.Shandong Weifang Tobacco Limited Company,Weifang 261061,China
  • Received:2021-12-10 Revised:2022-02-21 Online:2022-11-20 Published:2022-10-01
  • Contact: Xing-hua MA

Abstract:

The effects of a ridge-furrow rainfall harvesting system (RFRHS) on the growth, development, and quality of flue-cured tobacco were studied to develop a cultivation method for water storage and moisture preservation in the Shandong tobacco cultivation region. Two field experiments were carried out in the same year at different locations using the main local flue-cured tobacco varieties, Yunyan 87 and Zhongyan 100. The soil moisture content, agronomic traits, photosynthetic rate, dry matter accumulation, nitrogen content, nitrogen accumulation, chemical composition, and sensory quality of tobacco leaves were determined. It was found that, in comparison with the conventional cultivation method, the RFRHS increased the soil water content in the 20-60 cm soil layer. This system significantly increased leaf length and leaf width of Yunyan 87 at the budding stage and of leaf area at both budding and flat top crop growth stages. The RFRHS also increased the photosynthetic rate by 28.5% at the flat top growth stage. In addition, the dry matter accumulation, leaf nitrogen content, nitrogen accumulation, total nitrogen and total potassium contents were increased by RFRHS, while the total sugar and reducing sugar contents were decreased when compared with the conventional cultivation method in Yunyan 87. The RFRHS significantly increased the leaf length and leaf area of Zhongyan 100 at the budding stage, increased photosynthetic rate by 14.8% at the flat top stage, increased dry matter accumulation in the vigorous growth stage and nitrogen accumulation in the mature stage. The total alkaloid content in Zhongyan 100 was reduced by 12.7% by RFRHS compared with conventional cultivation but other chemical components were little affected. The RFRHS modified the soil moisture by making full use of rainwater and thus promoted the growth and development of flue-cured tobacco, improved the aroma, after-taste and reduced offensive odor, and improved the sensory quality of both varieties. In summary, the ridge-furrow rainfall harvesting system is a highly efficient, crop quality-enhancing cultivation method for the hilly and mountainous tobacco cultivation area in Shandong Province.

Key words: ridge-furrow rainfall harvesting system, flue-cured tobacco, growth and development, tabacco quality