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通过用40％河北福美砷、天津福美砷和5％菌毒清三种杀菌剂对苹果树腐烂病菌进行室内毒力测定。结果初步表明，河北福美砷效果最好，天津福美砷次之，其有效中量ED50分别为2364ppm、3585Ppm和17094ppm，河北福美砷毒力效果为天津福美砷毒力的1.52倍，是菌毒清的7．23倍。从而证明，目前试验推广的40％河北福美砷可湿性粉剂对苹果腐烂病菌毒力效果最好。
By using 40% Hebei Fumei arsenic, Tianjin Fumei arsenic and 5% mycophenolate fungicide three kinds of indoor pathogenicity of apple tree rot fungi. The results showed that Hebei Fumei arsenic best effect, Tianjin Fumei arsenic, the effective amount of ED50 were 2364ppm, 3585Ppm and 17094ppm, Hebei Fumei arsenic toxicity of Tianjin Fumei arsenic toxicity of 1.52 times, Of 7.23 times. Thus, it is proved that 40% of Hebei Fumei arsenic wettable powder tested in the current experiment has the best virulence on apple rot pathogen.