番薯过去由于采取露天育苗,长藤剪苗扦插,要到三月初下种,四月底抽芽长藤,六月中、下旬才能扦插,往往造成季节推迟,影响薯苗生长,产量一般较低。1980年,我们总结群众的经验,先后试验和推广了番薯温床育苗,小苗扦插的先进技术,获得较好的增产效果,一般比露天育苗,长藤剪苗扦插增产三成以上,增产幅度为34.62～ The sweet potato in the past due to adopt open-cut seedlings, cuttings cuttings of long vines, to be planted in early March, the end of April budding buds, mid-June, late to cuttings, often resulting in the season is delayed, affecting the growth of potato seedings, the yield is generally low. In 1980, we summed up the experience of the masses and tested and popularized the advanced techniques of seedling raising and seedling cutting of sweet potato seedlings in order to obtain better yield-increasing effects. In general, the cuttings yield increased by more than 30%