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Chinese Agricultural Science Bulletin ›› 2019, Vol. 35 ›› Issue (17): 32-36.doi: 10.11924/j.issn.1000-6850.casb18090043

Special Issue: 烟草种植与生产

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Effect of biochar substituting for peat on flue-cured tobacco growth

  

  • Received:2018-09-09 Revised:2019-01-15 Accepted:2019-01-24 Online:2019-06-25 Published:2019-06-25

Abstract: The effect of biochar with different sources substituting for peat on tobacco seedling growth. Results showed that tobacco seedling at each stage growed well in the treatment of 50% maize straw-derived biochar substituting for peat. The rates of tobacco emergence and seedling were significantly higher than those in other treatments, which were up to 91.4%, 97.5%, respectively. Additionally, the indices including stem height, stem girth, biomass of each part as well as root shoot ratio were in higher level. By contrast, the growth of tobacco seedling was delayed in the treatment of 70% tobacco stalk-derived biochar substituting for peat, with each index obviously lower than other treatments. In conclusion, the maize straw-derived biochar has the potential to be the floating seedling substrate substituting for peat. The improvement of tobacco stalk-derived biochar was weaker than maize straw-derived biochar, which even retarded tobacco growth.