ORIGINAL RESEARCH article
Front. Microbiol.
Sec. Microbe and Virus Interactions with Plants
Volume 16 - 2025 | doi: 10.3389/fmicb.2025.1631869
This article is part of the Research TopicMicrobiome-Based Techniques for Enhancing Crops Productivity and Eliminating Environmental PollutantsView all articles
Mechanism study on improving chloropicrin fumigation effect by covering fumigated soil with appropriate thickness film
Provisionally accepted
- 1Kunming University of Science and Technology, Kunming, China
- 2Guangdong Pharmaceutical University, Guangzhou, Guangdong Province, China
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Panax notoginseng, a perennial medicinal plant, suffers from severe continuous cropping obstacles. Chloropicrin (CP) as a soil fumigant can be used to effectively mitigate continuous cropping obstacles. Mulch film application plays a crucial role in enhancing the effectiveness of CP soil fumigation. However, However, the effects of mulch film application on soil microorganisms and quality of P. notoginseng, as well as underlying mechanisms, are unclear. This study compared 6S (0.06 mm) and 8S (0.08 mm) mulch films post-CP fumigation. The 6S film showed less degradation, higher transparency, tensile strength, and elongation at break than 8S. Soil temperature (ST) was lower, and soil water content (SWC) higher under 6S mulch film application with CP fumigation (F6S) compared to 8S (F8S). On the 14th day of fumigation, the CP content of F6S treatment was 28.97% higher than that of F8S treatment. F6S increased beneficial microbial phyla and genera such as Bacillus, Sphingomonas, and Mortierella, and reduced harmful Fusarium and Nectriaceae more effectively than F8S.Beneficial bacteria OTUs were significantly correlated with mulch thickness (MT), ST, and SWC. In addition, the F6S maintained the rhizosphere microbial diversity balance and inhibited the accumulation of pathogens (Ilyonectria and Fusarium), leading to a high seedling survival rate. The above changes further promoted the accumulation of biomass and saponins in P. notoginseng. Overall, F6S treatment improved fumigation efficacy and the yield and quality of P. notoginseng, making it a strategic solution to regenerate the soil health, quality, and production of functional root crops facing continuous cropping obstacles.
Keywords: Continuous cropping obstacle, Soil fumigation, Persistence, soil microorganisms, mulch film application
Received: 20 May 2025; Accepted: 12 Jun 2025.
Copyright: © 2025 Dai, Li, Pu, Lin, Liu, Liu, Xiuming, Liao and Ye. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence: Yang Ye, Kunming University of Science and Technology, Kunming, China
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