一、上半年国内玉米市场回顾今年上半年,由于政策效应,国内玉米市场与国际市场呈背离格局。国内市场基本是政策市主导,玉米价格走势大体可划分为以下四个阶段:第一阶段:(1月初～2月中旬) First, the first half of the domestic corn market review The first half of this year, due to policy effects, the domestic corn market and the international market was a departure from the pattern. The basic domestic market is dominated by the policy market, the price trend of corn can be roughly divided into the following four stages: The first stage: (early January ~ mid-February)