Origin and Output The main potato producers in the world are the former Soviet Union, Poland, China and the United States. The main potato producing areas in China are southwest mountainous area, northwest, Inner Mongolia and northeast. Dingxi, the potato capital of China, has become the largest virus-free seed potato production base, the largest potato planting base, the largest refined starch processing capacity and the first-class marketing system in China. The climate, soil quality and rainfall conditions in Dingxi City are suitable for potato growth. The produced potatoes are large in size, high in quality, round in color, smooth in skin, mellow in taste, high in dry matter content, and resistant to transportation and storage. They are excellent raw materials for producing all kinds of potato starch and its products and high-quality products for fresh export. The annual planting area is stable at about 3 million mu, reaching 3.5 million mu in 2008. Output of 5.3 million tons: anding district, Dingxi City is the county (district) with the largest potato planting area, the largest total output, the largest fresh sales volume and the largest processing volume in China. In 2009, the potato planting area in the whole region reached 6.5438+0.04 million mu. It accounts for more than half of the crop planting area in the whole region. The potato industry has truly become a local strategic leading industry, infiltrating the primary and secondary industries, radiating thousands of households, coordinating urban and rural development, increasing farmers' income and leading the regional economy. Dingxi City successfully held the China Dingxi Potato Industry Development and Economic and Trade Fair for many years, which greatly improved the popularity and influence of the potato industry. From the perspective of industrial system, potato has formed the most complete industrial chain in Dingxi City. Improved varieties, processing, storage and transportation, and marketing have all developed rapidly. The supporting deep processing system, marketing system and virus-free seed potato supply system have made new and greater contributions to agricultural efficiency and farmers' income. Variety: There are hundreds of varieties of potatoes in the country of origin, and new varieties are being cultivated all over the world. At present, there are thousands of varieties in the world, some of which contain high starch and are suitable as staple food. There are also varieties suitable for eating as vegetables. People cultivate many new varieties according to different uses, such as white, red and purple. Underground tubers are round, oval and oval, and the epidermis is red, yellow, white and purple. Generally speaking, they are cut and then sown with "bud eyes" on the tuber. If seeds are planted, they will soon mutate, so it is very easy to appear new varieties. In fact, you have it all in Baidu.