Therefore, for a long time its economy was in a primitive and backward state. Wooden plows were used for agricultural production and yaks were used for threshing. In some places the slash-and-burn method of farming was common.

• 农业生产基本上为木犁耕地、牦牛踩场脱粒，有的地方还保持着“刀耕火种”的生产方式。