木薯是用种茎进行繁殖的，种茎保藏的好坏，直接影响出苗率。以往，农家贮藏木薯种茎多放在窖中保管，一般好茎率不到20%。因此，大面积种植的木薯种茎只好从广东、广西等地调运，既麻烦又增加了生产成本。笔者通过多年的试验，采用土坑埋藏法保贮木薯种茎，效果很好，现简介如下：
木薯收获后，将地下老茎及顶部嫩茎截去，保留中间充实部分。在地势高燥、不积水且坐北朝南的坡地上，挖深60厘米左右，长、宽各为1.5米左右的土坑。将木薯种茎平铺在坑内，厚约40厘米，再在上面盖20厘米厚的干稻草，草面刚好与坑口平齐。然后培上高出地面30～40厘米的泥土。这样贮藏到次年春季，木薯种茎不会干枯，也不会腐烂，种植后发芽率高，新芽壮实，生长良好，农民朋友可以一试。
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