Long-term effects of chloropicrin fumigation on soil microbe recovery and growth promotion of Panax notoginseng

Introduction Panax notoginseng is a precious Chinese medicinal material. Soil fumigation can control soil-borne disease and overcome the continuous cropping obstacles of P. . However, chloropicrin (CP) kill non-target soil microorganisms reduce microbial diversity, but long-time impacts CP on are less reported. Methods We studied long-term effects microbes with high-throughput gene sequencing, correlated changes in composition communities environmental factors like physicochemical properties enzyme activities. This study mainly focuses recovery characteristics microbe after by evaluating ecological restoration soil, its sustained effect plant diseases, promotion crop growth focusing treatment. Results The results showed that significantly increased available phosphorus (P) to 34.6 ~ 101.6 mg/kg electrical conductivity (EC) 18.7% 34.1%, respectively. High-throughput sequencing altered relative abundance Trichoderma , Chaetomium Proteobacteria Chloroflexi while inhibiting lot Fusarium Phytophthora. inhibition rate Phytophthora spp. was still 75.0% third year fumigation. Fumigation enhanced notoginseng’s survival stimulated growth, ensuring healthy period. impact community assembly niches were characterized using normalized stochasticity ratio (NST) Levins’ niche breadth index. Stochasticity dominated bacterial assembly, fungal initially later determinism. reduced both fungi bacteria. Conclusion In summary, decrease diversity caused could be recovered over time, pathogens remained sustainable. Moreover, promote