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甘薯是仙游县主要粮食作物之一,全县常年栽种甘薯6.45万亩,因苗农长期使用老蔓育苗,造成品种混杂、种性退化,单产下降。为了改变不利的甘薯生产现状,农技部门采取了建立薯苗生产基地、引进高产优质甘薯新品种、提纯复壮当家品种等措施,每年繁育良种壮苗3亿多株,实现良种薯苗自给有余,每亩增产鲜薯600～1000kg,农民可增收600～800元。介绍了甘薯提纯复壮的技术方法。
Sweet potato is one of the main grain crops in Xianyou County. The county planted 6.45 million mu of sweet potato all the year round. Due to the long-term use of old man-made seedlings by seedlings farmers, the variety of hybrids is caused, and the species degenerated and the yield dropped. In order to change the status of unfavorable production of sweet potato, agricultural technology department has taken the establishment of potato seedling production base, the introduction of new varieties of high yield and quality sweet potato, purifying and rejuvenating the native varieties and other measures, breeding seedlings more than 300000000 strains each year, The yield of fresh potato per mu is 600 ~ 1000kg, farmers can increase 600 ~ 800 yuan. Introduced sweet potato purification and rejuvenation of the technical methods.