Скачать или смотреть Why bury the grape vines?

Farmers hang up dried grapevines. Every spring, Chinese grape growers pull dried, twisted vines out of the soil and hang them back on trellises.

Why bury the vines? It's a job they do every year, key to keeping them alive in cold regions. Winters in northern and northwestern China are too cold for vines to survive above ground, so every autumn farmers bend the vines down and bury them under a layer of soil.

Protect the woody vines from biting winds and deadly frosts. Once the ground thaws, it's time to dig, and the vines are carefully dug out, checked for damage, and tied back to the wire to start a new round of growth.