试验结果表明，甘薯直播栽培具有明显的综合优势(根系发达、分枝多、绿叶数、大薯比例高)，能延缓甘薯衰老，延长光合作用时间，生物产量高，效益好，能解决夏收夏种劳力紧张和夏季连续干旱不易甘薯扦插的问题，对于发展畜牧业生产具有重要的促进作用。

Experimenting the result expresses, the cultivation by direct seeding in sweet potato has to synthesize the advantage obviously (root system is prosperity, branch is many, the proportion of green leaf number and big sweet potato is high), can defer the sweet potato decrepitude, prolonging photosynthesis time, the living creature yield is high, the performance is good, can resolve the summer in summer harvest grow the physical labor strain to continue the problem that dry not easy sweet potato cuttage with the summer, promotingdevelopment livestock husbandry produce have very much the function