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Journal of Agriculture ›› 2023, Vol. 13 ›› Issue (7): 38-43.doi: 10.11923/j.issn.2095-4050.cjas2022-0091

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Effects of Chemical Fertilizer Reduction Combined with Different Organic Fertilizers on Growth, Yield and Quality of Flue-cured Tobacco

ZHAO Peng(), KE Meifu(), YANG Jiahao   

  1. Ankang Tobacco Company of Shaanxi Province, Ankang 725000, Shaanxi, China
  • Received:2022-07-26 Revised:2023-02-02 Online:2023-07-20 Published:2023-07-18

Abstract:

To screen out suitable types of organic fertilizers and corresponding chemical fertilizer reduction levels for flue-cured tobacco production in Ankang, a two-factor randomized block design was used in this study, and 9 treatments were set up, including 3 kinds of organic fertilizers and 3 reduction ratios of chemical fertilizers. A comparison experiment was conducted with conventional pure chemical fertilizer as the control (CK). The results showed that there were significant differences in plant height, stem girth, maximum leaf area, yield, output value and the proportion of superior tobacco under the application of different types of organic fertilizers. There were significant differences in plant height, stem girth, effective leaf number, maximum leaf area, yield, output value and the proportion of superior tobacco under different chemical fertilizer reduction levels. The interaction between the two factors was not significant. The effect of different types of organic fertilizers on the agronomic traits of flue-cured tobacco was earthworm cast> oil cake> lees, while the effects on the economic traits was earthworm cast= oil cake> lees. Taking into consideration of the field growth and output value of flue-cured tobacco and the ecological effect, earthworm cast of 3000 kg/hm2+ tobacco special fertilizer of 810 kg/hm2 (10% less than the conventional chemical fertilizer level) was the best treatment, followed by oil cake 750 kg/hm2+ tobacco special fertilizer 855 kg/hm2 (5% less than the conventional chemical fertilizer level), and lees 750 kg/hm2+ tobacco special fertilizer 855 kg/hm2 (5% less than the conventional chemical fertilizer level).

Key words: organic fertilizer, flue-cured tobacco, chemical fertilizer reduction, agronomic traits