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我国东北地区素以盛产大豆、高粱著称,可是现在种植面积最大、总产量最高的却是玉米。玉米在我国已经成为第三大作物。 玉米,并不是我国土生土长的庄稼,原来它的故乡在美洲。据考证,美洲的印第安人是在12,000～15,000年前从旧大陆经白令海峡走到美洲去的。古代印第安人赖以生存的主要食物之一便是玉米。墨西哥是玉米的主要起源地。 在墨西哥普埃布拉州古代遗址发掘出的玉米穗轴(棒子),距今大约
Northeast China is known for its abundant soybeans and sorghum, but now it has the largest planting area and the highest total yield of corn. Corn has become the third largest crop in our country. Corn is not a native crop of our country. Originally, its hometown was in the Americas. According to research, American Indians came to the Americas from the Old World through the Bering Strait 12,000-15,000 years ago. One of the main foods on which the ancient Indians live is corn. Mexico is the main source of corn. Corn cobs excavated at ancient sites in Puebla, Mexico, dating from about