干旱、高温、干热风，今年的夏粮如何夺丰收

Core Viewpoint - The ongoing drought and high temperatures pose significant risks to wheat production in China, particularly in key growing regions, necessitating urgent measures to mitigate potential impacts on summer grain yields [1][5][7]. Group 1: Drought Conditions - Since early April, many winter wheat-producing areas in China have experienced drought, particularly during the critical grain-filling period, which could severely affect grain plumpness and yield [2][4]. - As of late April, over 87% of the main winter wheat-producing areas had either been irrigated or experienced significant rainfall, indicating some alleviation of drought conditions [4]. Group 2: Anti-Drought Measures - Various anti-drought measures have been implemented, including the establishment of multi-departmental coordination mechanisms for irrigation and the use of artificial rainfall techniques [3][4]. - Specific actions include the mobilization of water resources in Shandong, implementation of dual-track anti-drought strategies in Hubei, and the use of mobile irrigation technologies in Anhui, which collectively have helped irrigate significant areas of wheat [3][4]. Group 3: Impact of Hot Winds - "Hot winds," characterized by high temperatures and low humidity, are a major meteorological threat during the late growth stages of wheat, potentially leading to reduced grain weight and yield [5][7]. - The risk of hot winds is particularly high in regions such as western Henan and southern Shanxi, with temperatures expected to exceed 32°C, which could significantly impact wheat quality and yield if not managed properly [5][6]. Group 4: Recommendations for Farmers - Farmers are advised to implement scientific irrigation practices, apply foliar fertilizers to enhance resistance, and select drought-resistant wheat varieties to mitigate the effects of hot winds [8][9]. - Smallholder farmers should prioritize the use of drought-resistant varieties and effectively utilize available resources and government support to optimize their wheat production under challenging conditions [9].