最近一段时间，"热"是河南当之无愧的"热词"。8月7日，郑州突降大雨。省气象台预报，我省未来几天 将进入多雨模式，大部地区有阵雨或雷雨，局地暴雨或大暴雨，并伴有强对流天气。气象专家提醒，降 雨有利于缓解高温、缓和旱情，但需防范局地强降雨可能引发的次生灾害。 目前正值防汛关键期，强对流天气频发。在旱情尚未得到全面缓解的背景下，这一波强降雨提醒我们， 一定要坚持防汛抗旱两手抓，高度警惕可能出现的旱涝急转、旱涝交替。 "谨防旱涝急转，必须牢固树立防汛抗旱两手抓的理念，统筹做好水旱灾害防御工作。" 谨防旱涝急转，必须牢固树立防汛抗旱两手抓的理念，统筹做好水旱灾害防御工作。目前，全省各地正 在积极开展抗旱保秋工作。在积极抗旱的同时，必须意识到气象变化的复杂性和严峻性，时刻注意防范 局地强降雨可能造成的旱涝急转，最大限度减少极端天气给生产生活带来的不利影响。对于城市来说， 一方面要多措并举防止内涝，另一方面要防止灯杆、配电箱等公共电力设施漏电，切实筑牢汛期安全防 线。 每一次极端天气来袭，都是对公共管理的考验。如何完善相关方案预案，检验着各级各地的决策力和执 行力。各地自然条件千差万别，风险点也不尽相同，只有结合自身情况 ...

Core Viewpoint - Climate change is fundamentally altering agricultural practices in China, necessitating adjustments in crop selection and planting schedules to adapt to new weather patterns [1][3][30]. Group 1: Impact of Climate Change on Agriculture - The suitable regions for wheat cultivation are gradually shifting northward, requiring changes in sowing times for winter wheat and the introduction of flood-resistant rice varieties in northeastern China [1][3][30]. - Farmers are facing increased costs due to prolonged droughts and extreme weather, leading to higher irrigation expenses and reduced crop yields [2][3][20]. - The frequency of extreme weather events has increased, with a notable rise in high-temperature days and drought conditions affecting crop production across various regions [26][30]. Group 2: Adaptation Strategies - Farmers are beginning to adopt new planting strategies, such as using drought-resistant seeds and investing in irrigation infrastructure to cope with changing climate conditions [3][22][31]. - The Chinese government is initiating a nationwide agricultural climate zoning project to redefine crop planting areas based on current climate conditions [4][30]. - High-standard farmland construction is being promoted as a key method to mitigate the impacts of climate change, enhancing irrigation efficiency and reducing the risk of crop failure [32][31]. Group 3: Economic Implications for Farmers - The financial burden on farmers is increasing due to higher irrigation costs and reduced crop yields, leading some to reconsider their agricultural practices or exit farming altogether [2][27][28]. - In regions like Henan and Shaanxi, farmers report significant drops in income due to adverse weather conditions, with some expecting a 30% decrease in yields compared to previous years [12][20][27]. - The rising costs of labor and inputs for crop production are pushing farmers to shift from high-maintenance crops to more resilient options like wheat and corn [27][28].

7月以来，河南被持续高温笼罩，平均气温创下64年来新高，全省41%的气象监测站点出现重度以上气 象干旱。 三、持续旱情会对秋粮生产造成怎样的影响？ 我省秋作物的大头在玉米和花生，玉米在抽雄吐丝到灌浆结实、花生在开花下针到果实膨大这个时期， 水分需求量大，也是反应最为敏感的时期。这一时期持续少雨又叠加干旱，对玉米开花授粉和籽粒灌浆 不利，很容易造成花粉活性降低、授粉不良，出现缺粒、秃尖等情况；对花生而言，由于干旱原因，开 花后果针下扎入土困难，下针后如果土壤过硬，果实膨大也会受到影响。 四、抗旱保秋如何"保"，河南已采取了哪些切实有效的举措？ 针对当前旱情，省财政紧急下拨2000万元抗旱资金，现金预拨中央1亿元"一喷多促"资金，下达6330万 元抗旱资金，支持重点地区抗旱保秋。周口、驻马店分别安排下拨抗旱资金2000万元、900万元，支持 应急打井、机井维修、调水引水、设备购置。农业农村部门统筹用好115万眼机井，持续做好机井检 修，便于群众浇灌。针对机井不足、群众排队情况，周口、驻马店两市通过财政补贴等方式，打应急井 1.88万眼，同时发挥沟渠连通成果，组织水泵抽引河水补源，挖掘浇灌潜力。水利部门6月下旬以来 ...

Core Insights - The extreme rainfall in North China is characterized by prolonged duration and significant localized precipitation, with areas like Beijing experiencing rainfall exceeding 500 to 600 millimeters in just 3 to 4 days, which is equivalent to the annual rainfall for the same period [1] - The occurrence of this extreme weather is attributed to the northward movement of the subtropical high pressure, which continuously transports moisture to the northern regions, compounded by geographical factors that enhance rainfall intensity [1] - The current weather pattern reflects a typical flood season in China, where strong rainfall coincides with high temperatures, leading to challenges in agricultural production, particularly for crops like corn that are in critical growth stages [1] Weather Impact - The strong rainfall process in North China is gradually weakening, with the core rainfall expected to conclude, although short-term thunderstorms and showers may still occur in the next two days [2] - The transition from dry to wet conditions has created a scenario of "drought-flood rapid transition," posing risks to agricultural production, necessitating vigilance against flooding and pest issues [1]

Core Viewpoint - The article discusses the current weather patterns in China, highlighting the early onset of the rainy season and the associated risks of flooding and drought, particularly in northern and southern regions respectively [1][3]. Group 1: Weather Patterns and Predictions - The average national precipitation is 6.2% lower than the historical average, with the highest number of high-temperature days recorded for this period [1]. - The rainy season has started 13 days earlier than usual, leading to increased risks of frequent heavy rainfall in northern China, where flood control infrastructure is relatively weak [3]. - Southern regions, particularly the Yangtze River basin, are experiencing reduced rainfall, raising concerns about drought conditions [3]. Group 2: Rainfall Distribution and Impact - The rainfall distribution for August is predicted to be uneven, with northern and northeastern regions, as well as southern areas like Guangdong and Hainan, experiencing 20-50% more rainfall, while regions like Chongqing, Hunan, and Hubei may see 20-50% less [6]. - The increased rainfall in certain areas necessitates heightened vigilance against flood and geological disasters, especially in northern regions that have faced severe flooding in recent years [6]. Group 3: Health and Climate Mapping - The national meteorological health map is based on 30 years of data from 2,400 counties, aiming to provide a clear understanding of how weather affects health and well-being [7][9]. - The map evaluates climate comfort based on multiple factors, including temperature, humidity, wind speed, and air quality, to guide the public in making informed decisions about health and wellness [10][12].

Core Viewpoint - A significant rainfall event is expected to impact multiple provinces in southern China, with the potential for severe weather conditions and secondary disasters due to the heavy rainfall [1][3][7]. Summary by Relevant Sections Rainfall Impact Areas - The core impact areas for the upcoming rainfall include nine provinces: Sichuan, Chongqing, Hubei, Hunan, Henan, Jiangsu, Anhui, Guizhou, and Guangxi [3][4]. - Rainfall is expected to be concentrated in regions such as southern Shaanxi, eastern Sichuan, western Hubei, and southeastern Henan, with potential for heavy rain from June 19 to 21 [3][6]. Rainfall Intensity and Duration - The rainfall process is characterized by a long duration and significant cumulative rainfall, with some areas receiving over 100 millimeters, and localized regions potentially reaching 200 to 300 millimeters [3][6]. - Compared to historical averages, the intensity of this rainfall event is expected to be stronger due to the influence of a strong subtropical high and cold air masses [4][6]. Weather Patterns and Causes - The formation of this rainfall is attributed to the interaction of warm and cold air masses, leading to sustained heavy rainfall across the Yangtze River basin [4][6]. - The subtropical high is expected to shift northward, facilitating the movement of warm, moist air into the affected regions [4][6]. Secondary Disaster Risks - There is a heightened risk of secondary disasters such as flash floods and geological hazards in areas with significant rainfall accumulation, particularly in eastern Guangxi, northern Hubei, and southwestern Hunan [7][9]. - The rainfall is also expected to alleviate drought conditions in several regions, including the Sichuan basin and parts of Henan, while still posing risks of rapid transitions from drought to flooding [7][9].

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]

Core Insights - The "Three Summer" period in Henan has begun, with significant weather changes expected to impact agricultural activities [1] - Increased rainfall is anticipated during this period, with varying amounts across different regions, raising the risk of drought and flooding [2] - A detailed harvesting and planting schedule has been established for wheat, corn, and peanuts, with specific dates for each region [3][4] - Farmers are advised to manage their fields carefully and prepare for potential adverse weather conditions to ensure successful harvests [5] Weather Conditions - Rainfall is expected to be above average, with 80-100mm in the northern Yellow River region, 85-200mm in the Huanghuai area, and 200-250mm in the southern Huai River region [2] - Average temperatures are projected to be 1°C to 2°C higher than normal, with specific regions experiencing temperatures between 22.5°C to 41°C [2] - The combination of high temperatures and rainfall increases the risk of rapid drought and flooding transitions [2] Harvesting and Planting Schedule - Wheat harvesting is set to occur from May 21 to June 10, with most areas starting 3 to 5 days earlier than usual [3] - Corn planting is scheduled from May 25 to June 15, with staggered planting dates across different regions [3] - Peanut planting is planned from May 21 to June 13, with specific start and end dates for various areas [3][4] Agricultural Management Recommendations - Farmers are encouraged to monitor weather forecasts closely and utilize dry periods for harvesting and drying crops [5] - It is essential to maintain drainage systems and prepare for timely planting of autumn crops to mitigate risks from uneven rainfall [5] - The agricultural sector is urged to adapt to the changing weather conditions to ensure optimal crop yields during the "Three Summer" period [5]

Group 1 - The core viewpoint of the articles highlights the upcoming heavy rainfall in Guangxi during the May 1st holiday return peak, with significant weather changes expected from May 7 to 9 [1][2] - Rainfall is anticipated to be particularly strong in northern and eastern Guangxi, with forecasts indicating moderate to heavy rain, and localized areas experiencing severe storms including hail and strong winds [1] - Meteorological experts emphasize the uneven distribution of rainfall, warning of potential flooding in areas with excessive rain while others may face drought conditions, thus urging a dual approach to flood prevention and drought management [2] Group 2 - The forecast indicates that from May 4 to 5, northern Guangxi will experience intensified rainfall, with some regions facing heavy rain and possible severe weather events [1] - On May 7, a new round of rainfall is expected to begin in northeastern Guangxi, with the rain spreading to northern and southern regions by May 9, accompanied by strong convective weather [1] - The articles stress the importance of public safety and travel planning during this period of adverse weather conditions [1]