华北黄淮将现持续性高温天气

Group 1 - The core viewpoint of the articles highlights the impact of high-temperature weather on winter wheat production in northern China, particularly in regions like Huanghuai and North China, where temperatures are expected to exceed 35°C and could reach up to 40°C in some areas [1][2] - The Central Meteorological Observatory predicts that the high-temperature weather will persist until around May 22, with significant effects on winter wheat, especially in areas with poor soil moisture [1][2] - The dry hot wind is expected to affect 21.6% of the winter wheat area in Henan and 19.8% in Shaanxi, potentially leading to a decrease in wheat weight by 2.2% to 4.4% if no preventive measures are taken [1] Group 2 - Recommendations for mitigating the effects of dry hot winds include optimizing leaf fertilizer and growth regulators, and employing measures to enhance photosynthetic capacity and transpiration resistance [2] - For areas with poor soil moisture and micro-spray irrigation systems, it is advised to spray water before the arrival of dry hot winds to increase air humidity and reduce canopy temperature [2]