作者经过多次反复试验,初步研究成功了以蛭石为接种基质的甘薯根腐病人工接种方法。具体方法是:1.准备接种体:将病原菌(Fusarium solani(Mart.)Sacc.f.sp.batatas McClure)转接到PDA平板上,于25℃下培养5～7天,用组织捣碎机或用研钵研磨,使成浆状,备用。2.准备接种薯苗:用甘薯种薯育苗后,剪取苗龄基本一致的薯苗,留上部 After many repeated experiments, the author initially studied the artificial inoculation method of sweet potato root rot with vermiculite as inoculation substrate. The specific method is as follows: 1. Preparation of inoculum: The pathogen (Fusarium solani (Mart.) Sacc.f.sp.batatas McClure) was transferred to a PDA plate and cultured at 25 ° C for 5-7 days. Or with a mortar grind, make into a paste, spare. 2. Ready to inoculate potato seedlings: seedlings with sweet potato seedlings, cutting seedling age basically the same potato seedlings, leaving the Ministry