山药在大多数地区1年只种1茬,为保证山药能周年供给,可选择合适的方法进行贮藏。1.沟藏法即挖1～2米深、1米左右宽的沟。在地上藤枯死后,土壤冻结前收挖山药,随挖随入沟,一层山药一层湿土摆放整齐,码高800毫米,顶部盖一层湿细土,随气温下降,逐渐加盖土,以冻 Yam in most areas only one crop a year, in order to ensure the annual supply of yam, choose the appropriate method of storage. 1. Ditch Tibetan law that dug 1 to 2 meters deep, about 1 meter wide ditch. After the ground vine died, the soil was frozen before harvesting yam, digging into the ditch, a layer of yam layer of wet soil placed neatly, 800 mm high, the top covered with a layer of wet soil, with the temperature dropped gradually capped Soil, frozen