Direct planting – in which small storage roots are planted instead of transplanting stem cuttings – has been studied as a labor-saving system in sweet potato. Early vigor is important for cultivars...

中文翻译：

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甘薯直栽栽培早期活力评价

直接种植——种植小型贮藏根而不是移植茎插——已被研究作为甘薯的一种节省劳动力的系统。早期活力对栽培品种很重要...