Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2021, Vol. 37 ›› Issue (36): 47-53.doi: 10.11924/j.issn.1000-6850.casb2021-0066

Special Issue: 烟草种植与生产

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Combined Application of Different Proportions of Slow-release Fertilizer and Compound Fertilizer for Tobacco: Effects on Soil Fertility and Yield and Quality of Flue-cured Tobacco

LI Xiancai1(), ZHANG Xiaolong1, PAN Yihong1,2(), ZHENG Shifang1, SUN Yonghua1, ZHOU Fangfang1, LEI Fuhou3, CAO Jiayuan1   

  1. 1Yunnan Wooja Biotechnology Company Limited, Kunming 650106
    2College of Chemical Engineering, Southwest Forestry University, Kunming 650224
    3Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, Guangxi University for Nationalities, Nanning 530006
  • Received:2021-01-19 Revised:2021-04-09 Online:2021-12-25 Published:2022-02-15
  • Contact: PAN Yihong E-mail:clex199712@163.com;pyh198311@126.com

Abstract:

To explore the effects of different proportions of slow-release fertilizers applied with tobacco specific compound fertilizers on tobacco-growing soil fertility and flue-cured tobacco yield and quality, a field test of five fertilizer combinations and CK were set up in the tobacco growing area of Reshui Town in Xuanwei City, and the soil and flue-cured tobacco leaves were sampled and analyzed. The results showed that the integrated fertility index (IFI) of the soil increased by 12.50%-23.21% under the five proportions of slow-release fertilizer combined with the special compound fertilizer for tobacco, compared with that of CK (single application of special compound fertilizers for tobacco), and IFI of soil was the best by replacing the compound fertilizer with 60%-100% of slow-release fertilizer (T3, T4 and T5 treatment). From the perspective of comprehensive quality of flue-cured tobacco, the average score of comprehensive quality of flue-cured tobacco increased by 0.19%-6.64% compared with that of CK by using different proportions of slow-release fertilizer instead of tobacco specific compound fertilizer. Among them, T4 treatment of 80% slow-release fertilizer replacement for compound fertilizer showed the best performance. T4 treatment had the best economic benefit, and the output value reached 59995.80 yuan/hm2, which was higher than that of the control and other treatments. In conclusion, the ratio of slow-release fertilizer and compound fertilizer of 80%:20% could better improve the comprehensive quality of tobacco leaves, obtain good economic benefits of flue-cured tobacco leaves and improve the soil nutrient structure to a certain extent.

Key words: combined application of slow-release fertilizer and compound fertilizer, tobacco-growing soil fertility, fertility index (IFI), flue-cured tobacco quality, economic benefits

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