Science and Technology Daily reporter Wang Yanbin
Many greenhouses were soaked in rainwater and their interiors were flooded; the roofs of greenhouses in low-lying areas were even flooded. This is a scene that happened on August 11 in Jitai Town, Shouguang City, Shandong Province. This scene seems familiar. Many people still remember that in August last year, due to the impact of typhoon "Winbia", heavy rains fell in Weifang City, Shandong Province. Shouguang was particularly severely affected, and many vegetable greenhouses were flooded and soaked.
From last year's "Wumbia" to this year's "Likima", the name of the typhoon is changing and the rainfall is increasing. What remains unchanged is the reality that vegetable greenhouses in most towns in Shouguang have suffered. Many people ask, why are greenhouses always injured in successive typhoons? How can the “City of Vegetables” withstand the “pain of the peak”?
According to the observation of a reporter from Science and Technology Daily, many known and unknowable factors come together to test Shouguang's ability to resist floods. Shouguang is located in a plain area, and the territory is very flat. There are many rivers flowing into the sea from south to north, but most of these rivers are winding and winding, which is not conducive to flood drainage. The plain terrain of high in the south and low in the north determines the fact that Shouguang is "easy to collect water". This is the fundamental issue that caused the disaster in Shouguang.
Affected by Typhoon "Lekima", Shouguang received an average rainfall of 287.4 mm from 9:00 on August 10 to 22:00 on August 11, which is equivalent to a precipitation of 632 million cubic meters. According to the official statement, the precipitation in this process was the highest since 1959. The largest rainfall ever recorded in the year. Prior to this, as early as August 9, the Office of the Shouguang Flood Control and Drought Relief Headquarters had issued the "Emergency Notice on Flood Discharge from the Mihe River and Danhe Upper Reservoir" to prevent heavy rainfall caused by the typhoon in advance. The pre-release plan will be implemented at 15:00 on the 9th.
The upstream gate was opened to release water, and Shouguang itself encountered a heavy rainfall once in 60 years, and the terrain was low-lying. The combination of these three known and unknowable factors directly increased the probability of Shouguang suffering from floods. But that's not all.
Shouguang greenhouses are prone to floods for many reasons, one of the important reasons being their special structure. In order to reduce the wind area and increase the ground temperature, Shouguang's winter-heated greenhouses generally use semi-underground structures. But "technology is a double-edged sword." The structure dug down about 0.7 meters directly led to serious water intrusion and water storage in the greenhouse.
According to preliminary official statistics, the intensity of rainfall brought by "Lekima" exceeded last year's "Wembia", causing water to enter 18,000 greenhouses in low-lying flood-prone areas of Shouguang City, 130,000 acres of farmland affected, and 9.3% of some villages along the river. Thousands of people were evacuated, causing direct economic losses of nearly 1 billion yuan.
The approaching typhoon has made everyone in Shandong Province extremely alert. As early as the morning of the 11th, Liu Jiayi, Secretary of the Shandong Provincial Party Committee, rushed to Shouguang in the rain to check the rain and flood conditions on the spot and study and guide the flood discharge plan. On the 12th, there were three executions in Mihe, Shouguang. The secretary of the provincial party committee rode a loader in the rain and went deep into the front line to conduct on-site command. The footage appeared on the TV screen, conveying the official attitude of being anxious for the people's urgent needs and being with the people.
Last year, the local encroachment on river channels was criticized by the outside world. According to the reporter's understanding, after Typhoon "Wembia" last year, Shouguang spent a year carrying out large-scale water conservancy renovations and comprehensive management of local rivers, from river bed renovation, dam construction, bridge construction to demolition and clearing. barrier. Before the arrival of "Lekima", in addition to carrying out reservoir flood discharges, we also carried out drag-net inspections of all water conservancy facilities including reservoirs, rivers, bridges, spillways, spillways , etc., and conducted inspections of Qingzhou, Shouguang, and Changzhou that were severely affected by the disaster last year. In the low-lying areas at the junction of Lesan County, farmland drainage mobile pumping stations and backup generators are installed. These have all come into play this year. Although the official attention of
, the enthusiasm of the people, and the attention of the outside world cannot slow down the pace of "Lichma", they can alleviate some pain and more or less recover the losses.
Life will go on...
Building sheds and growing vegetables is an important part of Shouguang people's lives, and it has also contributed to the latter's reputation as the "Chinese Food City". Here, the farming culture is deeply rooted in the people's bones. With the blessing of science and technology, and the hardworking and intelligent nature, Shouguang has gradually developed into the largest vegetable production and wholesale market in China.
"Wembia" came and left; "Likima" came and left. Will they come back under another name? No one dares to say. But what we see is: typhoons have repeatedly destroyed the greenhouses in vegetable cities, but they have not destroyed the confidence of vegetable farmers. Just like last year, thousands of new greenhouses will be built. The new technology
is being developed, and by then "anti-flooding" will become the new business card of Shouguang greenhouses. Only then will the city have the confidence to cope with floods.
And we are looking forward to the arrival of the new greenhouse.
The pictures in this article are all from the Internet unless otherwise noted.
