十种杀菌剂对欧李褐腐病菌的室内毒力测定  

Toxicity Test of Ten Fungicides to Monilinia fructicola Causing Chinese Dwarf Cherry Brown Rot

作　　者：周芳[1] 郝晓娟[1] 程超[1] 王美琴[1] 李新凤[1] 王建明[1] 

机构地区：[1]山西农业大学农学院,山西太谷030801

出　　处：《北方园艺》2014年第5期103-105,共3页Northern Horticulture

基　　金：国家自然科学基金青年基金资助项目(31000873);山西省科技攻关资助项目(20120311016-2);山西农业大学中青年学术骨干基金资助项目(XG201210)

摘　　要：以10种杀菌剂为试材,以欧李褐腐病菌为研究对象,采用菌丝生长速率法和孢子萌发抑制法测定了10种杀菌剂对欧李褐腐病菌(Monilinia fructicola)的室内毒力,以筛选出防治欧李褐腐病的有效药剂。结果表明:430g/L戊唑醇悬浮剂、24%腈苯唑悬浮剂、10%苯醚甲环唑水分散粒剂、80%多菌灵可湿性粉剂、70%甲基硫菌灵可湿性粉剂、500g/L异菌脲悬浮剂、50%腐霉利可湿性粉剂对欧李褐腐病菌菌丝生长的半致死浓度(EC50)均低于0.700mg/L,其中430g/L戊唑醇悬浮剂对菌丝的抑制效果最好,EC50为0.027mg/L;80%代森锰锌可湿性粉剂对菌丝的抑制效果最差,EC50为57.645mg/L。供试的10种药剂对孢子萌发的EC50均低于2.500mg/L,抑制作用最强的是500g/L异菌脲悬浮剂,EC50为0.024mg/L;效果最差的是80%代森锰锌可湿性粉剂,EC50为2.496mg/L。24%腈苯唑悬浮剂、430g/L戊唑醇悬浮剂、500g/L异菌脲悬浮剂可以用于欧李褐腐病的防治。Taking ten fungicides as materials, Chinese dwarf cherry brown rot as research object, the toxicities of 10 fungicides to Monilinia fructicola were tested by using mycelia growth rate method and spore germination method. The effective fungicides for control of brown rot of Chinese dwarf cherry were screened in the laboratory. The results indicated that the effective concetration （EC50） values of 430 g/L tebueonazole SC, 24% fenbueonazole SC, 10% difenoconazole WG,80% Carbendazim WP,70% thiophanate-methyl WP,500 g/L iprodione SC,50% procymidone WP were less than 0. 700 mg/L 430 g/L tebuconazole SC showed the strongest toxicity to mycelia growth with the minimum E50 of 0. 027 mg/L among 10 fungicides,while 80% mancozeb WP showed the lowest toxicity with the EC50 of 57. 645 mg/L. The EC50 values of 10 fungicides on spore germination were less than 2. 500 mg/L 500 g/L iprodione SC showed the highest toxicity and its EC50 value was 0. 024 mg/L. 80% mancozeb WP showed the lowest toxicity and its EC50 value was 2. 496 mg/L. 24% fenbuconazole SC,430 g/L tebuconazole SC and 500 g/L iprodione SC could be used for control of brown rot of Chinese dwarf cherry.

关 键 词：欧李褐腐病 美澳型核果链核盘菌 杀菌剂 毒力 

分 类 号：S436.62[农业科学—农业昆虫与害虫防治]