Abstract: Corn is not only an important grain crop, but also  an important raw material for industry. The stability of corn price is essential for resident life and national economy development. In recent years, enterprises using corn as raw material have been developing rapidly. Market requirement for corn has been increasing significantly. The fluctuation of corn price not only directly affects the people’s life, but also excerts huge influence on agricultural production operators, who take grain growing as their main source of income. Through analyzing corn price fluctuation trend both in short run and long run, this paper studied on the function characteristics of national adjusting policy and science & technology innovation in corn price fluctuation, and put forward countermeasures for corn industry to achieve a virtuous cycle.

Key words: agricultural policy, science &, technology innovation, corn price trend

摘要： 玉米既是重要的粮食作物，也是重要的工业原料，价格能否稳定对居民生活和国民经济发展至关重要。近年来，我国以玉米为原料的加工业得到了迅速发展，市场对玉米的需求出现了大幅增长的态势，玉米市场价格在不同阶段表现出了不同的波动特点。玉米价格的波动不仅直接影响人民的生活，而且对以种粮为主要收入来源的农业生产经营者影响较大。通过对玉米价格短期和长期波动阶段趋向的分析，研究国家农业调控政策和技术创新在玉米价格波动中的作用特点，为玉米产业实现良性循环提出对策建议。

关键词: 农业政策, 科技创新, 玉米, 价格趋势