Yam has many names, it has the name of potato, which is very important. As researching, it is from south America, about 1570, it comes to spain, and italy. It comes to china about 1600 end. So most area call it yam.
    It just have about 400 years history, comparing with those, it is young. But it has many ingredients. In the crucial time, it can be the material for help. in other countries, it has the important position in the dinning table.
The yam is one of four materials. It widely scattered around the world, top ranking. In ningxia, the xihaigu is widely spread, the main industry in this area.
    Recently, with the protection of the production and spread, the life change. Sure all is happy, not only enhance the economic benefit, but also arrange the new content.
    It is the vegetable and corp, has the goodness of high production, wide usage and high value. It has the big scrunchy. Comparing with other vegetable, it can be easily restored.
    The yam has widely usage? for animal, for people. In the industry, it can make the liquid, rubber, silk and sugar.
    This is the yam. It is the golden one in farmer’s view.