几种药剂对烟草赤星病菌的抑制作用  

Contrast Inhibition Efficacy of Some Fungicides on Tobacco Alternaria Alternate Pathogenic Bacteria

作　　者：彭世逞[1] 吴昊[1] 朱陈曾 尹鹏嘉[1] 官宇[2] 潘兴兵 董华芳[1] 

机构地区：[1]西昌学院农业科学学院,四川西昌615013 [2]四川省烟草公司攀枝花市公司,四川攀枝花617000

出　　处：《西昌学院学报（自然科学版）》2015年第3期1-3,共3页Journal of Xichang University(Natural Science Edition)

基　　金：四川省烟草公司攀枝花市公司重点项目"翠碧系列品种选育与应用"(项目编号:PZHYC20130016)

摘　　要：本文为了向田间防治烟草赤星病提供高效、安全的杀菌剂,在室内研究了4种杀菌剂对赤星病病原菌的毒力试验。结果表明:不同浓度的杀菌剂对烟草赤星病菌丝的生长抑制效果不同。40%的菌核净WP EC50值为29.84 mg/L,抑制效果最好;50%的腈菌三唑酮EC和10%多抗霉素B WP次之,其EC50分别为33.01 mg/L和30.02 mg/L;10%的多抗霉素(宝丽安)WP的抑制效果最差,其EC50为139.42mg/L。当浓度达到100 mg/L时,50%的腈菌三唑酮EC、10%多抗霉素BWP和40%的菌核净WP对烟草赤星病病原菌的抑制率分别达到了57.23%、66.52%和67.44%,而10%的多抗霉素(宝丽安)WP的抑制率只有45.39%。在一定范围内,各种药剂随着浓度的增大其抑制率也随之增大。Toxicities of four fungicides to Ahernaria alternate pathogenic bacteria was studied in order to select its control chemicals. The results showed that the four fungicides at different levels could inhibit pathogenic mycelium growth of Ahernaria ahernate. The inhibit effect of 40% Dimethachlon WP was best with the ECSO of 29.84 mg/L. The 50 % Nitrile bacteria triadimefon EC and 10% Polyoxins B WP were better, and the ECSO were 33.01 mg/L and 30.02 mg/L.While the inhibition effect of 10% Polyoxins（Polaroid Ann）WP was worst, the ECS0 was only 139.42 mg/L. The bacteriostasis rates of 50 % Nitrile bacteria triadimefon EC, 10 %Polyoxins B WP and 40 % Dimethachlon WP were respectively 57.23 %, 66.52% and 67.44%, when ethephon concentration was 100 mg/L. While the inhibition rate of 10 % Polyoxins（Polaroid Ann）WP was only 45.39 %. Various fungicides inhibition rate also increase with the increase of concentration.

关 键 词：烟草赤星病 室内毒力试验 抑制率 

分 类 号：S435.72[农业科学—农业昆虫与害虫防治]