晚播小麦遇寒潮，德州种粮大户和农技人员出招应对

Group 1 - The article discusses the challenges faced by wheat farmers in Texas due to late sowing and a recent cold wave, emphasizing the importance of field management for winter wheat [1][2] - Farmers are using plastic film to cover wheat seedlings to retain moisture and increase soil temperature by 1-3°C, which is crucial for promoting effective tillering before the Spring Festival [1][2] - The cost of applying plastic film is approximately 100 yuan per mu, with 80 yuan for the film and labor, and an additional 20 yuan for ventilation in March [1][2] Group 2 - The article highlights the benefits of snowfall, which acts as insulation for wheat fields, preventing frost damage and increasing surface moisture when it melts [2][3] - Recommendations include assessing soil moisture and temperature before deciding to irrigate, with caution advised against overwatering in freezing conditions to avoid root damage [3] - Farmers are advised to monitor for frost damage and consider applying urea to weak seedlings to promote recovery, while also keeping an eye on pest and disease threats [3]