作者: R. R. Youngman , S. Tiwari
DOI: 10.1007/978-3-662-07913-3_9
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摘要: Corn, Zea mays, is one of the world’s most important agricultural crops. The number hectares corn harvested worldwide in 2002 exceeded 138 million, which resulted production more than 602 million metric tons grain (FAO 2002a). US ranks first among growing nations, accounting for nearly fifth annual 2002b). farmers 27 ha 2001, produced over 237 (USDA-NASS 2002) and 91 silage (Morgan 2002).