As can be seen from the historical price law of domestic corn, it is basically maintained at: from June 5438 to March every year, due to the introduction of the purchasing and storage policy and the approach of the Spring Festival, the weather is cold, farmers are reluctant to sell and transportation is inconvenient. At this time, both the production area and the sales area will rise, especially the wagon transportation in the sales area will be more difficult. In April, due to the warmer weather, the storage of high-moisture corn is unfavorable, and the production area is plowed in spring, so it needs to be shipped to obtain funds for spring ploughing. At this time, it is mostly a callback; But in May, first of all, the demand began to be strong, farmers began to plow in spring and stopped selling grain, while the corn with high moisture content was almost sold out. In most years, it jumped by about \ \/ton in 80 yuan compared with April. Then, from June to September, the price of particularly high-quality corn rose because the demand was in short supply. Only when the price increase is too large will the state release its stocks to stabilize food prices, remember that it is to stabilize, not to suppress; From the middle and late September to the beginning of February, corn in North China went on the market, and corn in Northeast China began to go on the market in June 5438+ 10. At this time, it is declining. Generally, in late June 65438+ 10 or early February 65438+,the weather in the north suddenly cooled down and it snowed heavily, and the policy of purchasing and storing was introduced, and the corn price stopped falling and rebounded until March of the following year. On the whole, the influencing factors of the price trend of 20 15 corn are still concentrated on the policy and demand, and the impact of genetically modified corn on the market will be obvious on 20 15, such as being approved for import again after the storm subsides and canceling the freight subsidy. The most important point is the situation of domestic aquaculture. The author thinks that the price of 20 15 corn still keeps regular ups and downs, and it is difficult to have the same ups and downs as 20 14.