生物技术进展 ›› 2024, Vol. 14 ›› Issue (5): 839-847.DOI: 10.19586/j.2095-2341.2024.0064

• 研究论文 • 上一篇    

贝莱斯芽孢杆菌联合含钙土壤调理剂对烟草青枯病的防治

王博文1(), 王金星2, 邱成尧2, 秦庆宪2, 王菊香1, 姚博2, 李红艳2, 谭官鑫2, 杨应伟2(), 姬广海1()   

  1. 1.云南农业大学植物保护学院,昆明 650201
    2.云南省烟草公司普洱市公司,云南 普洱 665000
  • 收稿日期:2024-03-28 接受日期:2024-05-22 出版日期:2024-09-25 发布日期:2024-10-22
  • 通讯作者: 杨应伟,姬广海
  • 作者简介:王博文 E-mail: l481623593@qq.com
  • 基金资助:
    景谷烟区烟草青枯病综合防控技术研究与应用(PEYCKY202201)

Control of Tobacco Bacterial Wilt by Bacillus velezensis Combined with Calcium-containing Soil Conditioner

Bowen WANG1(), Jinxing WANG2, Chengyao QIU2, Qingxian QIN2, Juxiang WANG1, Bo YAO2, Hongyan LI2, Guanxin TAN2, Yingwei YANG2(), Guanghai JI1()   

  1. 1.College of Plant Protection,Yunnan Agricultural University,Kunming 650201,China
    2.Yunnan Province Tobacco Company Puer Company,Yunnan Tobacco Company,Yunnan Puer 665000,China
  • Received:2024-03-28 Accepted:2024-05-22 Online:2024-09-25 Published:2024-10-22
  • Contact: Yingwei YANG,Guanghai JI

摘要:

烟草是重要的经济作物,烟草青枯病对烟草产业造成了极大的经济损失。因此需要一种安全有效的方法防止烟草青枯病的发生。前期研究中发现可溶性钙肥和生防菌均能有效抑制青枯病菌的生长。在田间种植烟草时,通过单施或组合施用不同的含钙土壤调理剂和生防菌,筛选防治烟草青枯病的最佳组合;采集不同处理的烟草根际土,运用荧光定量PCR和高通量测序技术,探究不同处理下烟草根际土壤中青枯菌数量的变化以及微生物群落组成和结构的变化。田间试验表明,土壤调理剂和生防菌的施用均能有效降低烟草青枯病的发生,但3种含钙调理剂中只有硝酸铵钙能更好地与生防菌GT11复合。该组合处理能降低土壤中青枯病菌的数量,改善烟草根际土壤微生物的群落组成与结构,显著降低烟草青枯病的发病率和病情指数,田间防效达60%。研究证实硝酸铵钙与贝莱斯芽孢杆菌GT11的联合施用能够有效防治烟草青枯病,为烟草生产中青枯病的防治提供了新的思路和理论依据。

关键词: 硝酸铵钙, 贝莱斯芽孢杆菌, 烟草青枯病, 生物防治

Abstract:

Tobacco is one of the most important cash crops, and bacterial wilt of tobacco causes a great loss to tobacco production. Therefore, a safe and effective method is needed to prevent the occurrence of tobacco bacterial wilt. In the previous study, it found that the soluble calcium fertilizer could effectively control tobacco bacterial wilt. When tobacco was planted in the field, the best combination was selected by applying different soil conditioner containing calcium and biocontrol bacteria. The quantity of Ralstonia solanacearum was quantified throughfluorescence quantitative PCR. The composition and structure of microbial community in tobacco rhizosphere soil under different treatments were studied by high-throughput sequencing. Field experiments showed that the application of soil conditioner and biocontrol agent could effectively reduce the occurrence of tobacco bacterial wilt, but only ammonium calcium nitrate could compound with biocontrol bacteria GT11 better. The combination treatment decreased the quantity of bacterial wilt in soil, improved the composition and structure of microbial community in tobacco rhizosphere soil, and significantly reduced the incidence and disease index of tobacco bacterial wilt. The control effect in the field was up to 60%. The results showed that the combination of calcium ammonium nitrate and Bacillus velezensis GT11 could effectively control tobacco bacterial wilt, which provided a new idea and theoretical basis for tobacco production.

Key words: calcium ammonium nitrate, Bacillus velezensis, tobacco bacterial wilt, biological control

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