【期货热点追踪】美豆期货小幅上涨，美玉米期货跌至一周新低，美国作物改善和天气助力，市场下一步怎么走？大型投机者加仓空头，市场供需格局是否生变？

Core Insights - U.S. soybean futures experienced a slight increase while corn futures fell to a one-week low, indicating mixed market trends [1] - Improvements in U.S. crops and favorable weather conditions are influencing market dynamics, raising questions about future supply and demand [1] - Large speculators are increasing their short positions, suggesting a potential shift in market sentiment [1]