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采用室内生长速率法测定了戊唑醇、丙环唑、咯菌腈、井冈霉素、口恶嘧唑、三唑酮和福美双7种杀菌剂对苜蓿立枯病菌的毒力并进行了室内盆栽和田间药效试验。结果表明:戊唑醇、丙环唑、适乐时、井冈霉素、口恶嘧唑、三唑酮和福美双的EC50分别为0.0562μg·ml-1、0.0633μg·ml-1、0.2081μg·ml-1、0.2140μg·ml-1、0.5783μg·ml-1、0.7187μg·ml-1和1.1662μg·ml-1,以福美双的毒力最低,戊唑醇等其它6种药剂的毒力分别是福美双的20.8倍、18.4倍、6.1倍、5.4倍、2.0倍和1.6倍;40%戊唑双可湿性粉剂稀释500～1000倍和25%敌力脱乳油稀释1000倍喷雾,防治苜蓿立枯病的效果良好,且持效期长。
The indoor growth rate method was used to determine the toxicity of 7 fungicides of tebuconazole, propiconazole, fludioxonil, validamycin, emamectin, triadimefon and thiram against Alternaria solani and indoor Potted and field efficacy test. The results showed that the EC50 of tebuconazole, propiconazole, schoole, validamycin, emapril, triadimefon and thiram were 0.0562μg · ml-1, 0.0633μg · ml-1, and 0.2081μg · Ml-1, 0.2140μg · ml-1, 0.5783μg · ml-1, 0.7187μg · ml-1 and 1.1662μg · ml-1, with the lowest toxicity of thiram and the other 6 drugs Virulence were 20.8 times, 18.4 times, 6.1 times, 5.4 times, 2.0 times and 1.6 times that of the United States and the United States respectively; Dilution of 40% pentadazole double WP and 500 to 1000 times of 25% The control effect of alfalfa blight is good, and the persistence period is long.