通过研究哈茨木霉菌剂对当归产量和品质的影响，为哈茨木霉菌剂在甘肃当归道地产区大面积推广应用提供科学依据。通过田间对比试验，研究了哈茨木霉菌剂对当归产量、品质、根腐病和麻口病病情的影响，并对各指标进行了相关性分析。结果表明，与对照不接菌剂相比，接种哈茨木霉菌剂可使当归的芦头直径、鲜根重、干根重、产量分别增加13.98%、13.03%、14.95%、71.54%；当归中的醇溶性浸出物、挥发油、阿魏酸含量分别提高3.44%、12.77%、8.33%；对当归根腐病、麻口病的防效分别为57.12%、26.78%。当归的芦头直径、根干重、产量均与醇溶性浸出物和阿魏酸含量呈正相关，芦头直径、根干重、产量、醇溶性浸出物含量、阿魏酸含量均与根腐病和麻口病病情指数呈负相关。综上所述，在当归种植时接种哈茨木霉菌剂能显著提升当归的产量和品质，降低当归主要土传病害的病情。

This study investigated the effects of a Trichoderma harzianum inoculant on the yield and quality of Angelica sinensis, providing scientific evidence for its large-scale application in the genuine production areas of Gansu. Through comparison experiments in the field, its impacts were studied on the yield, quality, incidence of root rot disease and Ditylenchus destructor infection, as well as the correlations among these factors. Results showed that compared with the uninoculated control, inoculation with T. harzianum increased the root collar diameter, fresh root weight, dry root weight, and yield of A. sinensis by 13.98%, 13.03%, 14.95%, and 71.54%, respectively. Contents of alcohol-soluble extracts, volatile oil, and ferulic acid increased by 3.44%, 12.77%, and 8.33%, respectively, compared to the control. Furthermore, the application of the inoculants reduced the disease indices of root rot and D. destructor infection by 57.12% and 26.78%, respectively. The root collar diameter, root dry weight, and yield were positively correlated with the contents of alcohol-soluble extracts and ferulic acid, while root collar diameter, dry root weight, yield, alcohol-soluble extract content, and ferulic acid content were all negatively correlated with the disease indices of root rot and D. destructor infection. In conclusion, inoculation with T. harzianum significantly improves the yield and quality of A. sinensis and reduces the severity of its major soil-borne diseases.

S567.239

甘肃省科技计划(22CX8NA022)。