从80多个枯草杆菌(Bacillus subtilis Ch)拮抗菌株中选出3个菌株进行田间试验,结果B_1菌株的防病效果最好。根据1985～1987年的田间试验,B_1菌株的防病效果可达64％～76％,大白菜贮藏4个月后的防病效果达80％。温室和大田试验表明,浸种处理的大白菜在苗期有显著促进生长作用,收获期产量比对照提高14.9％。跟踪检测结果,B_1菌株可以在大白菜幼根上定殖,减少软腐细菌从根系侵入,厌氧处理后能延缓发病。
Three isolates were selected from 80 antagonistic bacteria for field trials. The results showed that B_1 (Bacillus subtilis) was the best of them on control of soft-rot of Chinese cabbage. Based on field tests from 1985～1987 control effects ranged from 64%～76% and after four months of cold storage might reach 80%. Greenhouse and field experiments showed the seedling growth by seed bacteriozation was significantly promoted as compared with the control. By trace plating B_1 could colonize the rhizosphere of seedlings of Chinese cabbage, suppress the pathogenic bacteria invading roots and delay soft rot occurence in plants by anaerobic treatment.
Journal of Nanjing Agricultural University
biocontrol, Bacillus subtilis, soft rot of Chinese cabbage