富阳县三山公社三合大队农科队,一九七三年,利用能自然开花的番薯品种“88—3”和“南京118”,进行人工杂交,通过对比选育,培育出高抗茎线虫病的番薯新品种“三合薯”。番薯茎线虫病,俗称“糠心病”,“糠皮病”、“花瓤”、“空梆病”。在我国已有三十多年的发病历史,以山东、河北、辽宁等省分布较广,为害较重。有些地方,危 Fuyang County Sanshan commune Sanhe Brigade agricultural team, in 1973, the use of natural flowering sweet potato varieties “88-3” and “Nanjing 118”, artificial hybridization, breeding by breeding high contrast stem nematode Soybean sweet potato new varieties “triple-potato.” Sweet potato stem nematode disease, commonly known as “heart disease”, “bran disease”, “Scape”, “Kong Zhi disease.” In our country has more than 30 years of history of the disease, with Shandong, Hebei, Liaoning and other provinces more widely distributed, more serious damage. In some places, dangerous