Summary
Abstract The use of chemical fertilizers and pesticides led to a decline in the quality and yield of Bupleurum chinense . The aim of this study was to determine the effects of Trichoderma harzianum biofertilizer on the growth, yield, and quality of radix bupleuri and microbial responses. The results showed that T. harzianum biofertilizer promoted the growth of B. chinense and increased the yield and quality of radix bupleuri. In addition, it increased the contents of NH 4 + –N, NO 3 − –N, available K, and available P and increased the activities of sucrase and catalase in the rhizosphere soil. High‐throughput analysis showed that the dominant bacteria in the rhizosphere were Proteobacteria (28%), Acidobacteria (23%), and Actinobacteria (17%), whereas the dominant fungi were Ascomycota (49%
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