甘薯切块育苗,是长葛县四合公社社员刘松峰同志去年试验成功的新方法。用这种方法能够节约种薯、多出薯苗和有效地预防甘薯黑斑病。今春四合公社五、六两队已全部采用此法育苗。育苗的方法是:将温汤浸种后的种薯,切成长不过四指,短不过二指的短段,较粗的种薯,中部的切段再劈成两半。切薯时若遇到黑斑病的病斑,一面切除全部病斑,同 Cutting sweet potato seedlings, Changge County, members of the Sihetunong commune Liu Songfeng successful trial last year, a new method. This method can save the seed potato, potato seedlings and more effective prevention of black spot disease sweet potato. This spring Tetra Pak five, six two teams have all adopted this law nursery. Seedling method is: Soaking the seed soaked in warm soup, cut into four fingers, short but two short sections, thicker seed tubers, the middle of the cut section and then split in half. If you encounter black spots when cutting potato disease, while removing all lesions, with