Spring irrigation work in various places is in full swing-
Water Saving and Drought Resistance Simultaneously Protecting Spring Irrigation Water Supply
Our reporter Liu Chun Muyang
At present, the spring-sown crops in the south of my country are entering the seedling growing period, and the overwintering crops in the north are entering the green jointing period.
As spring plowing production is in full swing, spring irrigation is in full swing, and agricultural water use has reached its peak.
A few days ago, the Ministry of Water Resources held a video conference on the dispatch of rural water supply and spring irrigation water supply guarantee work to analyze and judge the current rural water supply and spring irrigation water supply guarantee situation, and make arrangements for the next stage of drought protection and spring irrigation work.
Ni Wenjin, deputy director of the Rural Water Resources and Hydropower Department of the Ministry of Water Resources, said in an interview that 342 of the 460 large-scale irrigation districts across the country have spring irrigation tasks. It is expected that this year's spring irrigation coverage will reach 180 million mu, and the spring irrigation water supply volume will be 34 billion cubic meters.
Ni Wenjin said that the current focus of spring irrigation is winter wheat areas, mainly in North China and the Huanghuaihai Plain. The large and medium-sized irrigation areas in these areas have begun to divert water for irrigation.
The 13 major grain-producing provinces have all made plans for spring irrigation and water supply in advance.
"Central Plains Granary" Henan, as a major food province in my country, is responsible for ensuring food security.
Henan's wheat output exceeds one-fourth of the country's total output, and returning to Qingshui is the "water of life" to ensure wheat output. Therefore, Henan Baochun irrigation is related to the overall national food security.
During the spring irrigation period this year, Henan has innovated the irrigation model and compressed the irrigation cycle.
Instruct all localities to increase the intensity of water diversion and adopt the "short-term, large-flow, and staggered peak and wrong time" water diversion irrigation methods to shorten the irrigation cycle.
Strengthen coordination and communication with beneficiary counties and townships, make overall consideration of water demand, and maintain the order of upstream and downstream water use.
At the same time, the staff of the irrigation area was organized in advance to solve the problem of "stuck neck" in the irrigation area to ensure the safe operation of the irrigation project.
Shandong Province focuses on spring irrigation and water supply in large and medium-sized irrigation areas. 41 large-scale irrigation areas in the province have formulated spring irrigation water supply plans, with a total of 1.29 billion cubic meters of water drawn and a benefited area of 12.72 million mu.
At the same time, the local area vigorously popularizes water-saving irrigation, so that the limited amount of irrigation water can create the best production and economic benefits.
A reporter from the Economic Daily saw in the construction area of the high-standard farmland project in Bianlin Town, Lingcheng District, Dezhou, Shandong, that the green wheat seedlings were growing well.
Small pumping stations, PVC pipes and other facilities are readily available.
Jia Shengjun, a member of the Party Group of the Lingcheng District Agriculture and Rural Bureau, told reporters: "Through these facilities, irrigation water can be directly connected to the ground, and each mu of land can save 25 cubic meters of water per year." At the National Crop Variety Exhibition and Demonstration Center in Shanghe County, Jinan City In the planting area, more than 400 wheat varieties for demonstration planting are ushering in the jointing period, and the agricultural plant protection drones are spraying the green water for the wheat seedlings.
Huo Renlu, deputy county magistrate of Shanghe County, introduced that on the basis of making full use of high-standard farmland and water conservancy facilities, Shanghe County has strengthened the unified management and scientific dispatch of existing water sources, and formed the Yellow River water as the main and well water as the supplement. A water-saving irrigation system supplemented by river water storage.
The biggest disadvantage of current spring irrigation is the continuous development of drought.
Since the winter, the national average precipitation has been 20% less than that of the same period in normal years. Some areas in the south have problems such as poor soil moisture, insufficient water supply, and low water supply guarantee rate. In North China, continuous rainfall has been low and droughts have emerged. Spring irrigation and water supply guarantee work has caused certain impact.
Beginning in October last year, 20 of Guangdong’s 21 prefecture-level cities had substantially less precipitation. The Hanjiang River Basin has suffered severe drought in the past 60 years, with low water inflows from many rivers and serious shortage of water storage in reservoirs.
The drinking water safety of Shantou, Jieyang, Chaozhou, and Meizhou has been affected, and water demand for spring irrigation cannot be effectively guaranteed.
In the face of severe drought, the Pearl River Water Conservancy Commission scientifically controlled and implemented the Hanjiang water volume control. During the dry season, more than 600 million cubic meters of water was added downstream, which effectively guaranteed the irrigation water demand of more than 5 million acres of farmland in the Hanjiang River Basin.
From March 29th to 31st, there was a process of heavy rainfall in the south, and the area covered by rain areas with cumulative rainfall of more than 50 mm for 3 consecutive days was 155,000 square kilometers.
Starting from April 1, some areas in the south have entered the flood season, which is very beneficial to alleviating the drought.
"On the whole, water for spring irrigation in large and medium-sized irrigation districts across the country can basically be guaranteed." Ni Wenjin said that in the next step, the Ministry of Water Resources will increase supervision and guidance in key provinces, pay close attention to the development of drought, and urge effective measures to ensure water demand for spring irrigation. .
Our reporter Liu Chun Muyang