玉米：主力2509合约收2297元，短期宜短线交易

Core Viewpoint - Corn futures experienced a downward trend this week, with the main contract closing at 2297 yuan/ton, a decrease of 14 yuan/ton from the previous week [1] Group 1: Market Conditions - As of July 27, 2025, the USDA reported that the good-to-excellent rating for U.S. corn was 73%, in line with expectations, down from 74% the previous week and up from 68% the same time last year [1] - The favorable rating for U.S. corn indicates a strong production outlook, which continues to exert pressure on international corn prices [1] Group 2: Domestic Market Dynamics - In the Northeast production area, trade inventories have dropped to low levels, with traders showing moderate enthusiasm for low-price sales [1] - Grain enterprises have medium to long-term orders but are primarily engaging in essential purchases, leading to a lack of market activity and minimal price fluctuations [1] - The presence of wheat as a substitute, along with policies regarding imported corn auctions and delayed deliveries, has contributed to a cautious overall market sentiment [1] Group 3: Price Trends and Strategy - This week, corn prices declined again, maintaining a generally weak trend [1] - The suggested trading strategy is to focus on short-term transactions [1]