What are the natural conditions for developing agriculture in Xuanwei City?

Xuanwei's natural environment is not so good. Winter is cold, windy and dry, but Xuanwei is suitable for planting potatoes, corn and tobacco. Suitable for planting crops with less water demand in temperate zone. The planting effect of rice and wheat is not very good, but it can grow greenhouse vegetables, which is more than Xuanwei people and has a big market.