3种杀菌剂对番茄早疫病菌的室内毒力测试  

Laboratory Toxicity Test of Three Fungicides Against Tomato Early Blight

作　　者：尼玛玉珍[1] 德庆卓嘎[1] Nimayuzhen;Deqingzhuoga(Institute of Vegetable,Tibet Academy of Agricultural and Animal Husbandry Sciences,Tibet Lhasa 850032,China)

机构地区：[1]西藏自治区农牧科学院蔬菜研究所,西藏拉萨850032

出　　处：《西藏农业科技》2020年第3期26-29,共4页Tibet Journal of Agricultural Sciences

基　　金：西藏自治区农科院蔬菜研究所青年成长基金项目。

摘　　要：【目的】为筛选出防治番茄早疫病的有效药剂,科学指导蔬菜生产。【方法】采用菌丝生长速率法测定了3种杀菌剂对病原菌丝生长和孢子萌发的抑制作用,并分别计算出各自抑制有效中浓度(EC 50)。【结果】3种杀菌剂对番茄早疫病菌的菌丝生长和孢子萌发均有不同程度的抑制作用,其中对菌丝生长的EC 50由低到高分别为75%为丰可湿性粉剂、80%多菌灵可湿性粉剂、75%百菌清可湿性粉剂,对病菌孢子萌发的EC 50由低到高为为丰可湿性粉剂、80%多菌灵可湿性粉剂、75%百菌清可湿性粉剂。因此,综合来看,以75%为丰可湿性粉剂的抑制效果最佳,80%多菌灵可湿性粉剂抑制效果次之,75%百菌清可湿性粉剂抑制效果最差。【Objective】We experimentally determined the virulence of the three chemical fungicides,viperamcinolone,and carbendazem,to the tomato early blight.【Method】The three fungicides had different degrees of inhibition on the growth and spore germination of tomato early blight.【Result】The EC 50 for the mycelial growth of tomato early blight was from low to high as fungible powder carbendazim 80%WP,chlorothalonil 80%WP,chlorothalonil 80%WP,chlorothalonil 80%WP,chlorothalonil 80%WP and chlorothalonil 80%WP wettable powder.【Conclusion】Among them,Fung Fungwettable powder had the best inhibition effect,carbendazim 80%WP was the second,and chlorothalonil 75%wettable powder had the worst inhibition effect.

关 键 词：杀菌剂 番茄早疫病 毒力测定 

分 类 号：S481[农业科学—农药学]