Scientific water adjustment and water should be prepared for the southern drought to resist, drought, drought, and drought

Since July, the Yangtze River Basin has high temperatures and rain, the water has been withered, the water level of the rivers and lakes has continued to decline, and severe summer and autumn have been drought in the Yangtze River Basin. In order to cope with drought, the Ministry of Water Resources and the Yangtze River Basin related provinces and cities studied and formulated a joint scheduling plan for drought resistance, and scientifically dispatched water conservancy projects. All localities should adopt comprehensive measures such as shafts, water lifting, weir, and extended pipeline networks, which effectively reduces the impact and loss caused by drought.

What is the current drought situation? How will the drought be developed next? Will it affect autumn grain crops and urban and rural drinking water? How will we consider scientifically scientific scientific scientific dispatch reservoir groups? In response to these issues, the relevant person in charge of the water conservancy department responded.

Drought situation is still severe

In the past few days, affected by the continuous high temperature and raining and the water upstream of the Yangtze River, the largest freshwater lake in my country, the water level of Poyang Lake, has continued to decline. As of 8:00 on September 6, the water level at Duchang Station of Poyang Lake was 7.97 meters and the water level of Xingzi Station was 7.99 meters, which fell below the 8 -meter -long water level, and once again refreshed into the earliest record of the extremely dry water period.

"Extreme drought has seriously affected the people's drinking water, agricultural production and ecology." Wang Chun, director of the Jiangxi Provincial Department of Water Resources, said that since late June, the average rainfall of Jiangxi Province has a average rainfall of 178 mm. Note. The province's 2077 reservoirs were below the dead water position, accounting for 20%; 44,500 mountain ponds dried up, accounting for 22%; 25 rivers of 25 square kilometers occurred, and the affected area of ​​crops reached 8.836 million mu.

In order to cope with the drought, under the unified deployment of the Ministry of Water Resources, since August 16, Jiangxi Province has implemented the "Special Action for Joint Disclosure of Drought Protection and Water Supply for Drought Protection and Water Supply of Poyang Lake Reservoir". In order to consider crop type, irrigation needs, water sources, and expected water, guide the reservoir to do a good job of water use and accurately undertake upstream water in the irrigation area. The demand for water use has increased a total of 225 million cubic meters of water.

The drought in Jiangxi is a microcosm of drought in all provinces and cities in the Yangtze River Basin. Since July, the rainfall and water in the Yangtze River Basin have been severe, and the water levels in the middle and lower reaches of the Yangtze River and the water level of Dongting Lake and Poyang Lake have continued to decline. The growth of autumn grains has affected. In the face of rare drought, relevant provinces and cities in the Yangtze River Basin actively prevent drought and drought, which reduces drought losses to the greatest extent.

"At present, the drought in the middle and lower reaches of the Yangtze River is still developing." Liu Zhiyu, deputy director of the Information Center of the Ministry of Water Resources, analyzed that the rainfall in the Yangtze River Basin in mid -September is expected to continue to be less. From 20 % to 50 %, the rivers and rivers continue to be less, the water level of the river and lake continues to fall, and the water storage pressure of the reservoir at the end of the flood is greater. Looking forward to October, the rainfall in the middle and lower reaches of the Yangtze River is still significantly less. The summer and autumn drought may occur in Jiangxi, Hunan, Hubei, Anhui and other places.

Coordinated scheduling to replenish downstream water

Water conservancy project is a heavy weapon for flood prevention and drought resistance. Scientifically dispatching water conservancy projects is an effective means of drought resistance and a key measure.

On August 16th, in response to the actual situation of the critical period of irrigation and water demand for rice and other autumn grain crops such as the Yangtze River Basin, the Ministry of Water Resources implemented a special operation of the "Joint Disclosure of Drought and Water Supply for Drought and Water Supply for Drought and Water Supply of the Yangtze River Basin", and dispatched the upstream reservoir group and Dongting of the Yangtze River. The lake water reservoir group and the Poyang Lake water system reservoir group, which has a total hydration of 3.57 billion cubic meters of downstream, effectively improved the conditions for dry flow in the middle and lower reaches of the Yangtze River and the water along the river in the two lakes. Among them, Hubei, Hunan, Jiangxi, Anhui, and Jiangsu provinces have a total of more than 2.6 billion cubic meters of water, and the beneficiaries of the rural water supply are 13.85 million.

"There is a cycle of crop irrigation water. In mid -September, it is the peak period and critical period of crop irrigation water such as middle and lower reaches of the middle and lower reaches of the Yangtze River. The demand for agricultural irrigation water is large and concentrated." The Ministry of Water Conservancy decided that from 8 o'clock on September 12, the special operation of the "Joint Disclosure of Drought and Water Supply for Drought and Water Supply for Reservoir Group in the Yangtze River Basin Reservoir Group" was launched again. Schedule the upstream reservoir group with the Three Gorges Reservoir as the core, the "Four Water" Reservoir Group of the Xiangye Shanye in the Dongting Lake System, and the Ganfun Rao Xiu Xiu Xiu Xiu Xiu Xiu Xiu Xiu Xiu Xiu Xiu Xiu Xiu to hydrate it. above.

The reporter learned that this special operation is mainly aimed at the middle and lower reaches of the Yangtze River, the Dongting Lake Basin, and the dry area of ​​the Poyang Lake Basin, that is, the "one river, two lakes" dry areas. While ensuring the safety of the people's drinking water, the focus of 356 large and medium -sized irrigation areas, 14.6 million mu of medium rice, and night rice irrigation water demand, and many small irrigation areas of autumn grain water demand.

"At present, the outlet flow of the Three Gorges Reservoir is 8,000 cubic meters per second per day. From September 14th, the Danxia Reservoir's exit traffic is increased by 9,000 cubic meters daily to increase the hydration to downstream. The changes in water supply for water supply and autumn grain, timely adjust the outlet flow of the Three Gorges Reservoir, and plan to replenish more than 500 million cubic meters of water from the middle and lower reaches of the Yangtze River. "Wu Daoxi, deputy director of the Water Conservancy Museum River Water Resources Commission, introduced that the Yangtze River Water Conservancy Committee will leak under hydration under hydration. Perform precision forecasts, guide the water conservancy projects such as culverts and pumping stations in the middle and lower reaches of the Yangtze River, and pumping stations, etc., and strive to exert the benefits of hydrating benefits of this special action to the best.

After preliminary analysis, through a new round of special operations, it can effectively alleviate the rapid decline in dry flow water levels in the middle and lower reaches of the Yangtze River. The creation of drought -resistant water and diversion is more favorable, ensuring the safety of dry flow in the middle and lower reaches of the Yangtze River, the water supply of urban and rural water along the Dongting Lake Water System, and the Poyang Lake Water System, and ensure the demand for irrigation water for autumn grain crops. Prepare to resist heavy droughts and droughts

Autumn grain accounts for three -quarters of the annual grain output, and the stability of autumn grains is of great significance to ensure the harvest of the food throughout the year. Large and medium -sized irrigation areas are the main battlefields of food production in my country. It is understood that there are 356 large and medium -sized irrigation districts in Hubei, Hunan, Jiangxi, Anhui, and Jiangsu in the middle and lower reaches of the Yangtze River Basin, with a irrigation area of ​​28.56 million mu.

"At present, there are more than 7.2 million acres of rice in large and medium -sized irrigation areas in the grouting period, and more than 7.4 million acres of late rice are in the period of extraction." Zhang Dunqiang, deputy director of the Agricultural and Hydropower Department of the Ministry of Water Resources, told reporters to make up for the accurate docking of the Yangtze River Basin reservoir group. Each cubic meter of water is used on the blade. The water conservancy department actively responds and takes resolute and effective measures to minimize the effects of drought.

On the one hand, establish a ledger and accurately grasp the situation of water. Depending on the fertility period of the crop, further understanding the water requirements and water demand period of 356 large and medium -sized irrigation areas, accurately grasp the irrigation zone, rural concentrated water supply project water sources and water inlet position, water removal method, lowest water pickup level pumping level, low -end of the bottom plate of the water outlet, and other projects. , Establish a detailed engineering status and water accounts.

On the other hand, docking needs and guiding reasonable water distribution. Guide the scientific analysis of water supply engineering water supply and crop irrigation of water conservancy departments in relevant provinces and municipalities, and further calculate the ability of the Yangtze River to dry water and 117 large and medium -sized irrigation areas. The amount of water in the irrigation area, the water volume of the 35 reservoirs participating in the scheduling of the Poyang Lake system can be used in the 35 -seater reservoir, and the amount of water demand for large and medium -sized irrigation areas in 113 is to maximize the combination of drought resistance.

"After finding up the bottom of the" water account ", establish a large and medium -sized irrigation district, rural water supply project water daily dispatch mechanism, and combine hydrological meteorological forecast information to roll the estimated amount of water adjustment of each water outlet, and strive to release water on demand, so as to put water on demand. Save water for water and provide water supply for the bumper harvest and urban and rural water supply. "Zhang Dunqiang said.

At present, the drought defense situation of the Yangtze River Basin is still severe. Liu Weiping said that the Ministry of Water Conservancy will be prepared to resist heavy drought and drought, coordinate the current and later drought -resistant water demand, strive to increase reservoir water storage, scientifically dispatch water conservancy projects, and ensure water supply safety and shipping safety in the Yangtze River Basin.

Source: Economic Daily

- END -