长期以来，各地甘薯产区群众种植甘薯多习惯于随地形起埂移栽的方法。据1996年平阳镇推行南北行起埂种植甘薯的示范结果看，南北行起埂种植甘薯通风透光，改变田间小气候，尤其在8月份气温下降，昼夜温差较大时，还可提早积累糖分和淀粉。据调查，南北行起埂种植甘薯一般可比东 For a long time, sweet potato production areas around the masses planted more sweet potato transplanting method with the terrain. According to the demonstration results of planting sweet potatoes from north and south lines in Pingyang Town in 1996, it can be seen that the planting of sweet potatoes in north-south line plays an important role in ventilation and transpiration and changes microclimates in the field. Especially when the temperature drops in August and the temperature difference between day and night is large, starch. According to the survey, north-south line of planting sweet potato is generally comparable East