马铃薯，别名土豆，是我国北方地区重要的农作物之一，它具有极高的营养价值，有人类的“第二面包”之称。以靖边县土豆姐姐在约1333.3 hm2的沙土地上种植的土豆为例，就土豆的功效和作用谈谈看法。%Potatoes, alias potatoes, is one of the important crop in northern China, which has a high nutritional value, there is human“second bread”said. Jingbian County potato sister about 1 333.3 hm2 sandy ground planted potatoes for example, to talk about their views on the effectiveness and role of potatoes.
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