多粘类芽胞杆菌DN-1防治水稻纹枯病初步研究  

Preliminary Study on Paenibacillus polymyxa DN-1 Controlling Rice Sheath Blight in Rice

作　　者：胡飞[1] 李昌春[1] 周子燕[1] 胡本进[1] 徐丽娜[1] 郑进国 

机构地区：[1]安徽省农业科学院植物保护与农产品质量安全研究所,合肥230031 [2]舒城县舒茶镇农业综合服务中心,舒城231300

出　　处：《中国生物防治学报》2015年第4期524-528,共5页Chinese Journal of Biological Control

基　　金：安徽省农业科学院学科建设项目(14A1127);国家农业科技成果转化资金项目(2010GB2C300196)

摘　　要：多粘类芽胞杆菌是一种能防治多种病原真菌病害的生防细菌.本文通过抑菌率测定、盆栽试验、田间防效试验首次研究不同浓度多粘类芽胞杆菌DN-1对水稻纹枯病的防治效果,试验结果表明当终浓度在5～120亿芽孢/L（667 m^2用水量50 L）时,对水稻纹枯病室内抑菌率达62.21％～90.54％;盆栽试验防效达46.19％～77.11％;药后12、24 d,2013年田间防效分别达43.43％～75.70％、59.01％～79.64％;2014年田间防效均分别达50.72％～77.26％、53.65％～77.29％;DN-1终浓度在120亿芽孢/L时两年间田间防治效果与井冈霉素A 60 g.a.i/hm^2处理相当,低于噻呋酰胺60 g.a.i/hm^2处理.Paenibacillus polymyxa is a kind of biocontrol bacterium which could be used for pathogenic fungi diseases controlling. In the present study, the control effect ofP. polymyxa DN-1 on rice sheath blight disease was tested for the first time by the means of fungistatic rate determination, pot experiment, and field efficacy test. The result showed that the fungistatic rate against rice sheath blight in the laboratory experiment and the pot experiment were 62.21%-90.54% and 46.19%-77.11% respectively, when the final concentration ofP. polymyxa is 0.5--12 billion spores/L. The field control effect reached 43.43%--75.70%, 59.01%--79.64% in 2013, 50.72%--77.26%, 53.65%--77.29% in 2014, after treatment with R polymyxa for 12 or 24 days. The field control effect of P. polymyxa at final concentration （12 billion spores/L） was equal to validamycin A at 60 g.a.i/hm^2 concentration, however, the field control effect of R polymyxa was much lower than that of thifluzamide at 60 g.a.i/hm^2 concentration.

关 键 词：多粘类芽胞杆菌 水稻纹枯病 终浓度 抑菌率 防治效果 

分 类 号：S476[农业科学—农业昆虫与害虫防治]