摘要
【目的】探明解淀粉芽孢杆菌YN48对烟草黑胫病的防治潜力。【方法】苗期施用YN48的基础上,在大田发病初期,采用5.1×10^7 CFU/mL的YN48菌液、80%烯酰吗啉水分散粒剂有效成分800 mg/kg、50%氟吗·乙铝可湿性粉剂有效成分625 mg/kg、68%精甲霜·锰锌水分散粒剂有效成分680 mg/kg和25%溴菌腈微乳剂有效成分250 mg/kg,每隔7 d各喷淋1次,共喷药3次,并在3次施药后第7和14天调查黑胫病病情。【结果】连续3次施药后的第7天,上述菌液和药剂对黑胫病的防效分别为85.42%、62.22%、86.91%、86.94%和54.57%;第14天的防效分别为77.46%、46.10%、77.24%、80.09%和46.83%,仅喷淋YN48与氟吗·乙铝、精甲霜·锰锌处理间的防效无显著差异(P>0.05)。YN48除能防治黑胫病外,还能将生长期延长8 d,挽回23.02%的产量和28.41%的产值。【结论】在烟草苗期施用YN48的基础上,可以于黑胫病发病初期,单独喷淋YN48或与化学杀菌剂氟吗·乙铝、精甲霜·锰锌等化学药剂分别结合应用,能有效控制烟草黑胫病。
[Purpose]To understand the potential of Bacillus amyloliquefaciens YN48 to control tobacco black shank disease.[Method]Based on YN48 application,YN48(5.1×107 CFU/mL)suspension,80%dimethomorph WG(ai.800 mg/kg),50%flumorph+phosethyl-Al WP(ai.625 mg/kg),68%metalaxyl-M+mancozeb WG(ai.680 mg/kg)and 25%bromobacterium nitrile ME(ai.250 mg/kg)were sprayed 3 times at the beginning of the disease with 7 days intervals.[Results]The control effects were 85.42%,62.22%,86.91%,86.94%and 54.57%after 7 days and 77.46%,46.10%,77.24%,80.09%and 46.83%after 14 days,respectively.YN48 spray only did not show significant difference from flumorph+phosethyl-Al WP and metalaxyl-M+mancozeb WG(P>0.05).Besides,YN48 prolonged 8 days of growing period,recovered 23.02%of commercial tobacco yield and 28.41%of cash income.[Conclusion]Based on the application of YN48 at seedling stage,YN48,flumorph+phosethyl-Al WP and metalaxyl-M+mancozeb WG could control effectively black shank of tobacco at the beginning of the disease.
作者
刘剑金
刘子仪
王学坚
张艳
徐燕鹏
罗洁
罗山
何月秋
LIU Jianjin;LIU Ziyi;WANG Xuejian;ZHANG Yan;XU Yanpeng;LUO Jie;LUO Shan;HE Yueqiu(Pu'er Branch of Yunnan Tobacco Company,Pu'er 665000,China;College of Agronomy and Biotechnology,Yunnan Agricultural University,Kunming 650201,China)
出处
《云南农业大学学报（自然科学版）》
CSCD
北大核心
2020年第2期361-365,370,共6页
Journal of Yunnan Agricultural University:Natural Science
基金
中国烟草总公司云南省公司项目(2015YN26)。
关键词
烟草
烟草疫霉菌
内生菌
苗期
喷淋
tobacco
Phytophthora nicotianae
endophyte
seedling stage
spray
