摘要：AbstractBiofumigation is an environmentally friendly strategy used to control nematodes and plant diseases. The volatile oil ofZanthoxylum bungeanumhas high insecticidal and antibacterial activity. However, it is not known if the seed ofZ. bungeanumis a suitable material for biofumigation to control southern root-knot nematodes (SRKN) on tomato, and how it may regulate the soil bacterial community structure. We used pot experiments in the greenhouse to determine the effects ofZ. bungeanumseeds on SRKN, plant growth parameters, soil physicochemical and microbial characteristics. A total of 26 volatile components, including nematicidally active substances, were identified fromZ. bungeanumseeds.Z. bungeanumseed biofumigation significantly reduced the SRKN population by 88.89% and 81.55% on the 50th and 100th day after transplanting, respectively. Compared to the control, the total soluble sugar, soluble solids, soluble protein, titratable acid, root activity and the fruit yield per tomato plant increased significantly. The content of soil alkali-hydrolyzed nitrogen, available potassium and the soil enzyme activities were also significantly increased. The soil bacterial diversity and the co-occurrence network complexity were increased byZ. bungeanumseed biofumigation. Relatively more keystone OTUs in biofumigation soil had potential plant growth-promoting capabilities. The function ofZ. bungeanumseed increasing tomato production in SRKN-infected soil depends on directly killing SRKN and improving soil properties. These results indicate thatZ. bungeanumseed can be used as both a nematicide and a high quality organic fertilizer in tomato production.
关键词：KeywordsbiofumigantZanthoxylum bungeanumseedroot-knot nematodetomatosoil bacterial community
