几种杀菌剂对西瓜枯萎病的室内毒力测定  

Toxicity of Several Fungicides to Watermelon Fusarium Wilt

作　　者：许彦[1] 罗丰[1] 杨礼哲[1] 何有栋[1] 肖春雷[1] 孔祥义[1] 

机构地区：[1]三亚市南繁科学技术研究院,海南三亚572000

出　　处：《热带农业科学》2010年第10期18-19,26,共3页Chinese Journal of Tropical Agriculture

基　　金：国家科技支撑计划项目(No.2007BAD48B07-05);国家科技支撑计划项目(No.2009BADA2B05)

摘　　要：采用生长速率法测定几种杀菌剂对西瓜枯萎病菌(Fusarium oxysporum Schlechtendahlex Fries f.sp.niveum(E.F.Smith)Snyder et Hansen)的室内毒力。结果表明:多粘类芽孢杆菌和甲基托布津的抑制效果最好,噁霉灵次之,咯菌腈最差;其中多粘类芽孢杆菌与甲基托布津的抑制效果相当,当多粘类芽孢杆菌浓度为25 000mg/L时,抑制效果达为82.77%;其EC50值为506.176 4 mg/L。多粘类芽孢杆菌可作为大田防治西瓜枯萎病的防治药剂首选。The toxicity of several fungicides were tested under the condition of lab by the inhibition zone and mycelium growth rate methods.The result showed that the inhibition of thiophanate methyl WP and Paenibacillus polymyxa was the best,followed by hymexazol AC,fludioxonil the poorest.The inhibition effects of thiophanate methyl WP and Paenibacillus polymyxa were matched,reaching 82.77% when the concentration of Paenibacillus polymyxa was 25 000 mg/L and EC50 was 506.1764 mg/L.Paenibacillus polymyxa was the first choice for control watermelon fusarium wilt in filed.

关 键 词：西瓜枯萎病 杀菌剂 毒力测定 

分 类 号：S482.2[农业科学—农药学] S436.5[农业科学—植物保护]