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中国生物防治学报 ›› 2023, Vol. 39 ›› Issue (4): 904-914.DOI: 10.16409/j.cnki.2095-039x.2023.02.040

• 研究论文 • 上一篇    下一篇

贝莱斯芽胞杆菌SH-1471可湿性粉剂研制及其对番茄枯萎病的防治效果

申云鑫1,2, 李铭刚3, 施竹凤1, 赵江源3, 王楠1,2, 李者芬1,2, 杨明英1, 陈齐斌2, 杨佩文1   

  1. 1. 云南省农业科学院农业环境资源研究所, 昆明 650205;
    2. 云南农业大学植物保护学院, 昆明 650201;
    3. 云南省微生物研究所, 昆明 650091
  • 收稿日期:2022-11-18 出版日期:2023-08-25 发布日期:2023-08-25
  • 通讯作者: 杨佩文, 研究员, E-mail:398036877@qq.com;陈齐斌, 副教授, E-mail:tclass99@163.com
  • 作者简介:申云鑫,男,硕士研究生,E-mail:1437466844@qq.com。
  • 基金资助:
    云南省科技计划重大科技专项(202202AE090010);国家自然科学基金项目(32060624)

Development of Wettable Powder of Bacillus velezensis SH-1471 and Its Control Effect on Tomato Fusarium Wilt

SHEN Yunxin1,2, LI Minggang3, SHI Zhufeng1, ZHAO Jiangyuan3, WANG Nan1,2, LI Zhefen1,2, YANG Mingying1, CHEN Qibin2, YANG Peiwen1   

  1. 1. Institute of Agricultural Environment and Resources, Yunnan Academy of Agricultural Sciences, Kunming 650205;
    2. College of Plant Protection, Yunnan Agricultural University, Kunming 650201;
    3. Yunnan Institute of Microbiology, Kunming 650091
  • Received:2022-11-18 Online:2023-08-25 Published:2023-08-25

摘要: 贝莱斯芽胞杆菌Bacillus velezensis在微生物农药开发方面具有极大的潜力,对其可湿性粉剂(Wettable powder)的研发以及生产工艺优化,是推进其产业化、商业化的措施之一,且对推进农业绿色发展、实现绿色防控具有重大意义。以贝莱斯芽胞杆菌SH-1471为研究对象,采用单因素试验法筛选出对菌株SH-1471活性影响最小的载体和助剂及其复配比例。通过室内盆栽试验测定贝莱斯芽胞杆菌SH-1471 WP对番茄枯萎病的防治效果。经筛选确定贝莱斯芽胞杆菌SH-1471 WP的配方及配比为:以高岭土为载体的母粉87%、木质素磺酸钠2%、NNO 8%、黄原胶2%、抗坏血酸(VC)1%;所得制剂活菌数为2.5×1010 CFU/g、细度97%、润湿时间12 s、悬浮率88.6%、干燥减量1%、pH 7.1、杂菌率为0,各项指标均符合国家标准;连续储藏试验结果表明:180 d 4℃下芽胞存活率达87.65%,25℃为82.45%;室内盆栽试验表明可显著降低番茄枯萎病的发病率,防治效果达93.7%。贝莱斯芽胞杆菌SH-1471 WP具有稳定性好、防效高等特点,在作物病害生物防治方面具有较好的应用前景。

关键词: 贝莱斯芽胞杆菌, 可湿性粉剂, 番茄枯萎病, 防效研究

Abstract: Bacillus velezensis has great potential in the development of microbial pesticides. The research and development of its wettable powder and the optimization of its production process are one of the measures to promote its industrialization and commercialization. In addition, it is of great significance to promote the green development of agriculture and realize green prevention and control. B.velezensis SH-1471 was used as the research object. Single factor test was used to select the carrier and additive that had the least effect on its activity and its compound proportion. The control effect of B.Velesiensis SH-1471 WP on tomato Fusarium wilt was determined in a pot experiment. The formulation and ratio of B.velezensis SH-1471 WP were established as follows:kaolin as carrier parent powder 87%, sodium lignosulfonate 2%, NNO 8%, xanthan gum 2%, ascorbic acid (VC) 1%; The viable count of the preparation was 2.5×1010 CFU/g, fineness 97%, wetting time 12 s, suspension rate 88.6%, drying reduction 1%, pH 7.1, and impurity rate 0. All the indicators were in line with the national standards. The continuous storage experiments showed that the survival rate of spores reached 87.65% at 4℃ for 180 d and 82.45% at 25℃. Laboratory experiments showed that it had a good control effect and could significantly reduce the incidence of tomato Fusarium wilt, with a control effect of 93.7%. B.Velesiensis SH-1471 WP has the characteristics of good stability and high control efficiency, and has a good application prospect in the biological control of crop diseases.

Key words: Bacillus velezensis, wettable powder, tomato Fusarium wilt, control effect

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