Changes in environmental factors of continuous cropping tobacco-planting soil and their effects on chemical quality of flue-cured tobacco

doi:10.14088/j.cnki.issn0439-8114.2026.04.014

Abstract

Abstract: Aiming at the problems of soil degradation and quality decline caused by flue-cured tobacco continuous cropping, the deep driving mechanism and precise regulation path of continuous cropping obstacles were revealed from the coupling perspective of “soil health-microbial function-tobacco leaf quality”. The study found that although continuous cropping improved soil available nutrients in the short term, the negative effects caused by soil acidification and loss of microbial diversity (especially the decrease in fungal diversity and abnormal relative abundance of Acidobacteria) offset the nutrient gains. The imbalance of fungal community structure was a key factor driving changes in enzyme activities. By inhibiting oxidoreductase activities and disrupting the synergistic balance of the enzyme system, it indirectly restricted the synthesis and accumulation of petroleum ether extract, ultimately leading to a decline in the aroma quality of flue-cured tobacco leaves. Adjusting soil pH to 5.5-6.0 by applying calcareous materials or biochar, and synergistically implementing comprehensive strategies of balanced fertilization, targeted remodeling of enzyme activity profiles (enhancing oxidoreductases and inhibiting specific hydrolases), and restoring microbial functions were aimed at effectively alleviating continuous cropping obstacles through the overall restoration of the micro-ecosystem, thereby achieving a synergistic improvement in the yield and quality of flue-cured tobacco.

Key words: continuous cropping, tobacco-planting soil, environmental factor, flue-cured tobacco, chemical quality, soil property

CLC Number:

S318

CHEN Zhen-guo, FENG Ji, SUN Yu-xiao, YAN Jia-li, TIAN Hui-wen, SONG Hong-chang, CHAI Li-guang, XIONG Shuang-lian, TU Shu-xin, ZHANG Yun-zheng, LI Wei, LIU Bi-cheng, SUN Jing-guo. Changes in environmental factors of continuous cropping tobacco-planting soil and their effects on chemical quality of flue-cured tobacco[J]. HUBEI AGRICULTURAL SCIENCES, 2026, 65(4): 81-89.

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