关键词: 玉米, 生产优势, 单产潜力, 成本收益, 饲用需求, 灌溉需水

Abstract: Due to the prominent phenomenon such as high corn price, high corn yield and high corn inventory in recent years, some people think that China has lost advantages in corn production, thus they call on reducing corn planting area sharply and lower corn self-sufficiency rate. However, judging from economic and ecological view, corn production in China still has many advantages. This paper analyzed our advantages in corn by comparing with other crops, and with corn produced in the other countries from the following 5 aspects: planting distribution range, yield potential, cost-benefit, market demand prospect and irrigation requirement. The results showed that corn in China had extensive planting area, strong adaptability to natural conditions and huge yield potential; better planting efficiency than the other arid land crops, bigger reduce space in cost compared to the developed countries; extensive market demand, feed corn would become major requirement in future market; less irrigation water needed and higher utilization efficiency of water resources, helpful for saving regional water resources. In the long run, China should continue to play the corn advantages and not relax corn production.

Key words: corn, production advantages, yield potential, cost and benefit, feed demand, irrigation water demand