Core Viewpoint - The "Three Summers" period is critical for crop planting, with the northern regions entering the main wheat harvesting phase in early June. Recent weather forecasts indicate that drought conditions may ease due to expected rainfall in certain areas, although some regions will experience dry weather favorable for harvesting [1]. Group 1: Weather Impact on Agriculture - Rainfall is expected from May 31 to June 2 in drought-affected areas such as southeastern Gansu, southern Shaanxi, and southwestern Henan, which will help alleviate drought conditions, although it may temporarily hinder wheat harvesting [1] - The next ten days will see no significant rainfall in regions like northern Shaanxi, northwestern Henan, southern Shandong, and northern Anhui, which is beneficial for accelerating wheat harvesting [1][3] Group 2: Threats to Crop Yield - The two main threats during the "Three Summers" are hot winds and excessive rainfall, which can lead to reduced wheat yields and spoilage of mature crops [3] - Experts recommend scientific irrigation and foliar fertilization to enhance crop resilience against hot winds, as well as selecting appropriate crop varieties to mitigate risks from the outset [3] Group 3: Harvesting Strategies - During rainy conditions, experts advise timely harvesting and drying of wheat based on weather conditions and crop maturity to minimize losses. If conditions do not allow for drying, low-temperature mechanical drying or proper indoor ventilation should be employed [6] - To prevent sprouting of wheat heads, the use of sprout inhibitors is recommended, with a focus on harvesting varieties that are more susceptible to sprouting first [6] Group 4: Pest and Disease Management - Regions like Huang-Huai-Hai and the middle and lower Yangtze River are at risk of diseases such as stripe rust due to increased rainfall, while high temperatures and low rainfall can lead to pest outbreaks like aphids and spider mites [8] - In corn-growing areas, attention should be paid to root rot and underground pests, as well as migratory pests that can damage crops during their growth stages [8] Group 5: Water Resource Management - Water resource management is crucial during the "Three Summers" to ensure smooth harvesting. Authorities plan to enhance monitoring of rainfall, soil moisture, and crop conditions to dynamically assess drought situations [11] - Precise water resource allocation is emphasized to avoid downstream water shortages while addressing immediate drought conditions [12]

Weather Conditions During Summer Harvest and Planting - The overall weather conditions during this year's summer harvest and planting period are expected to be favorable, facilitating agricultural activities [3] - From late May, most summer grain-producing areas will experience mainly sunny or partly cloudy weather, with a low risk of continuous rain, which is beneficial for the maturity and harvesting of winter wheat and rapeseed [4] Potential Weather Risks - There will be a significant rainfall event in regions such as Jianghan, Jianghuai, and northern Jiangnan from May 27 to 28, which may adversely affect the harvesting of rapeseed and winter wheat [5] - The first half of June may see temperatures close to or slightly above the historical average, which is generally favorable for wheat harvesting, but localized severe convective weather may occur, necessitating precautions [5] - The risk of continuous rain and heavy precipitation during the wheat harvesting period is high in certain areas, while increased rainfall later will benefit summer planting efforts [5] Impact of Adverse Weather - Continuous rainy weather can lead to difficulties in harvesting, causing wheat to fall and spoil, and affecting the drying of harvested grains, resulting in yield losses [9][13] - "Rotting rain" typically occurs from late May to mid-June, caused by the convergence of cold air from the north and warm moist air from the south, leading to widespread and slow-moving rain systems [11][12] Recommendations for Farmers - Farmers are advised to optimize machinery scheduling to take advantage of good weather for harvesting, and to manage soil moisture effectively to prevent waterlogging [15] - For harvested wheat, proper drying and ventilation are crucial to prevent spoilage, and timely planting of summer crops like corn and soybeans should be prioritized based on weather conditions [15] High-Temperature and Drought Challenges - High temperatures and drought conditions are prevalent during this period, particularly affecting regions like Huanghuaihai, North China, Jianghuai, and parts of the Southwest [28] - Young seedlings are particularly vulnerable to high temperatures, which can lead to issues such as "burning" and "yellowing," potentially impacting growth and yield [30] Mitigation Strategies for High Temperatures - Farmers should implement timely irrigation and nutrient management to mitigate the effects of high temperatures, ensuring adequate moisture and nutrient supply to crops [32][33] - Installation of cooling systems in greenhouses and using shading techniques can help protect crops from extreme heat [33] Emergency Preparedness for Weather Extremes - The Ministry of Agriculture emphasizes the importance of monitoring for drought, dry hot winds, and continuous rain, and encourages timely warnings and resource preparations to address potential disasters [42]

央视网消息：夺取今年的夏粮丰收，还需要经历高温、强降雨、强对流等多重复杂天气的考验。比如，各大麦区今夏是否会遭遇"烂 场雨"？又该如何防范？ 预防"烂场雨"，要密切关注天气的变化，根据麦子成熟的程度，合理调配农机，安排收获的进度。一旦发生"烂场雨"，要及时地清理 麦田沟系，确保雨停田干，减少麦子倒伏的概率，同时确保雨后农机能尽早下田抢收，减少不必要的损失。到了烘干晾晒环节，应利 用国有粮库、学校操场等场所烘干或晾晒小麦，避免霉变。 气象分析师表示，各地防范"烂场雨"，需结合当地农作物生长周期，关注天气变化。 气象分析师 胡啸：从冬小麦的这个生长周期来看，目前我国的湖北、河南南部的冬小麦已经逐渐成熟了，湖北的收获都超过了9成， 大部地区冬麦区还处在一个灌浆期。这场降雨对冬小麦的产量形成是有利的，对陕西、山西等春播区的春玉米和春小麦的发芽生长也 是有利的。未来一周，整体天气还是不错的，在明天、后天，夏收区大多是以晴朗天气为主，是适宜开展夏收的。26日、27日陕西南 部可能有一些小到中雨，在27日开始到29日，在江南、华南、西南区东部还有一轮大范围的强降雨天气过程，这场降雨不会落在冬麦 区。要关注6月1日前后，陕西 ...