福建省防治芦笋茎枯病菌的药剂筛选  

Laboratory Screening for Asparagus Stem Blight Fungicides in Fujian Province

作　　者：卢松茂[1] 陈振东[1] 林秀香[1] 郑少缘[1] 余智城[1] 

机构地区：[1]福建省热带作物科学研究所,福建漳州363001

出　　处：《农药》2014年第7期523-524,530,共3页Agrochemicals

基　　金：福建省公益类科研院所专项(2010R1030-1)

摘　　要：[目的]芦笋茎枯病足芦笋的毁灭性病害，通过室内试验筛选出可有效防治该病害的药剂。[方法]采用菌丝生长速率法测定10种杀菌剂对芦笋茎枯病菌的毒力，并获得10个毒力回归方程及抑制有效中浓度（EC50）。【结果】30％苯甲·丙环唑EC、40％氟硅唑EC、10％苯醚甲环唑WG、60％唑醚·代森联WG和80％代森锰锌WP等药剂的EC50值在0．28-4．48mg／L之间，且毒力回归方程斜率值介于1．0674~2．2612之间，其抑菌作用强，显著高于70％甲基硫菌灵WP、65％代森锌WP、50％硫磺SC和25％嘧菌酯SC的抑菌活性。『结论130％苯甲·丙环唑EC、40％氟硅唑EC、10％苯醚甲环唑WG、60％唑醚·代森联WG、80％代森锰锌WP等药剂均可有效抑制芦笋茎枯病菌的生长。[Aims] Asparagus stem blight （caused by Phomopsis asparagi） is a destructive disease in Asparagus officinalis L. In order to select fungicides that can effectively control P. asparagi, indoor experiments were carried out. [Methods] Toxicity of 10 fungicides on P asparagi were tested by mycelial growth rate and their toxicity regression equations and EC50s were got. [Results] The results showed that difenoconazole · propiconazole 30% EC, flusilazole 40% EC, difenoconazole 10% WG, pyraclostrobin · metiram 60% WG and mancozeb 80% WP with the ECs0s of 0.28-4.48 mg/L, and the toxicity regression equation values between 1.0674-2.2612, displayed stronger inhibition, significantly higher than thiophanate methyl 70% WP, zineb 65% WP, sulfur 50% SC and azoxystrobin 25% SC. [Conclusions] Difenoconazole · propiconazole 30% EC, flusilazole 40% EC, difenoconazole 10% WG, pyraclostrobin · metiram 60% WG and mancozeb 80% WP can effectively inhibit the growth ofP. asparagi.

关 键 词：芦笋茎枯病 天门冬拟茎点霉 药剂筛选 

分 类 号：S436.44[农业科学—农业昆虫与害虫防治]