1, cane preparation: first of all, when harvesting sweet potato vines can not be as simple as in the past, need to be careful, will look on the cane gently cut back, and then pick out well-proportioned full, thick, healthy and undamaged, the leaves with scissors from the petiole of a little bit above the cut off, pay attention to the petiole can not be wiped out to avoid the cane with wounds.

2, cane treatment: the leaves will be removed in accordance with the two sections of the cane a section cut into small sections, placed in not very strong sunlight to dry 1-2 days, so that it enters a dormant state, in order to extend the storage period, but also can be put into the 0.5% Amphitryon solution immersed in 2 minutes.

3, storage pit preparation: in a cool and dry place according to the number of canes to dig an appropriate size of the storage pit, the depth of about 20 centimeters after the put full of sand filling space.

4, put into the cane: the cane needs to be sand storage, can keep enough moisture. First of all, at the bottom of the pit to lay a layer of sifted fine sand (fine sand needs a certain amount of water content, in order to pinch the loose can be dispersed into pieces as appropriate), and then the canes according to the distance between the interval of 1 centimeters in order to neatly row into the row, row after the full, lay a layer of 3-centimeter-thick sand, and then continue to row a layer of canes. And so on, a layer of rattan, a layer of fine sand filled, and then the top layer of fine sand needs to be 15-20 centimeters thick.

5, moisturizing and anti-freezing: after the discharge of the cane, cover a layer of film on the top, surrounded by soil and stone compaction, to moisturize and anti-freezing, if the weather is cold, can be covered with a layer of straw insulation, to avoid freezing damage to the cane.

6, cuttings planting: to the second year of sweet potato planting season, you can take out the canes for cuttings, easy to use, can be taken with the seed.