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Chinese Agricultural Science Bulletin ›› 2023, Vol. 39 ›› Issue (25): 11-15.doi: 10.11924/j.issn.1000-6850.casb2022-0754

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Effects of Different Nitrogen Rates and Organic Fertilizers on Growth, Yield and Quality of Flue-cured Tobacco in Low Fertility Soil

ZHAO Fang(), ZHA Hongbo, CHEN Hua, YANG Junzhang, GAO Shunbo, GUI Longfeng, XIAO Jiafan, ZHAO Shengchun, XIA Lei, XU Bin, LI Wenlu, HU Guangjun   

  1. Zhaotong Company of Yunnan Tobacco Corporation, Zhaotong, Yunnan 657000
  • Received:2022-08-31 Revised:2022-12-04 Online:2023-09-05 Published:2023-08-28

Abstract:

To study the effects of different nitrogen rates and organic fertilizers on the growth, yield and quality of flue-cured tobacco in low-fertility soil, the field experiment was conducted with ‘Yunyan 87’. The results showed that the growth and development of flue-cured tobacco plants were promoted with the increase of nitrogen application rate in a certain range, and the yield and quality of flue-cured tobacco were formed. However, the disease was aggravated and the quality of flue-cured tobacco tended to decrease when the amount of pure nitrogen increased to 126 kg/hm2. The agronomic and economic characters of the treatment of adding decomposed farm manure were better than that of adding commercial organic fertilizer. In summary, according to the comprehensive analysis of field performance, agronomic traits, stress resistance and economic indicators, T4 (treatment 1 fertilization + decomposed farm manure 16500 kg/hm2) treatment was the best, followed by T5 (treatment 1 fertilization + commercial organic fertilizer 1500 kg/hm2) treatment, and T2 (increasing 10% of local conventional fertilizer, applying 115.5 kg/hm2 of nitrogen) treatment, T3 (increasing 20% of local conventional fertilizer, applying 126 kg/hm2 of nitrogen) and T1 (conventional control, applying 105 kg/hm2 of nitrogen) treatments were worse, and T6 (no fertilizer control) treatment was the worst.

Key words: low fertility soil, nitrogen application rate, organic fertilizer, flue-cured tobacco, production development, yield and quality