(Summary description)In April and may every year, the sky of Weifang will be filled with flocs such as Yangxu and LiuXu, which is really a big test for our allergic people. " Mr. Tan, a citizen of Weifang, told reporters, "there is no way. At this time, I can only go out with a mask every day. Otherwise, once I am allergic, it will be very troublesome. The flying catkins not only affect the urban environment, but also affect my normal travel."
As soon as the catkins appeared, many citizens put on masks one after another.
Citizens complain and sanitation workers worry. It's another "floating season"
On the morning of the 15th, on Dongfeng Street in Weifang, the reporter saw that many citizens went out wearing masks because flying catkins began to appear in the sky. "It's hard to go out by car. When you're tired, you can't avoid shortness of breath. These flying catkins in the air are really annoying. They can easily be sucked into your nostrils, which is very uncomfortable." Ms. Wang, who is waiting for the red light on a public bicycle, told reporters, "It is reasonable to say that spring is the best season for outdoor activities, but there are a large number of Yang catkins and willow catkins in Weifang, which directly affects our citizens' outdoor activities. In particular, these catkins fall to the ground and float everywhere at the sight of the wind. It is difficult to clean and affect environmental sanitation, which has become a persistent disease affecting the appearance of the city."
In the selection of tree species, tree species such as French Tung are gradually used to replace poplar and willow.
Then, the reporter interviewed Master Cheng, an environmental sanitation worker who was cleaning the road. He told reporters that the temperature in Weifang rose slowly this year, and the appearance of Yang catkins and willow catkins was slightly later than in previous years. "Now the catkins have just appeared. It is estimated that during May Day, the catkins will usher in their heyday. At that time, piles of Yang catkins and willow catkins can be seen everywhere on the road, which is very difficult to clean." Mr. Cheng told reporters, "The management of flying catkins has to be managed from the source. If there are fewer poplar and willow species, the flying catkins will naturally be reduced, and the cleaning work in the city will be much easier."
"Chemical floc cleaning" has entered the experimental stage, which will reduce the production of flying floc from the optimization of tree species
For the "flying catkins" reflected by the public The reporter consulted Weifang natural resources and Planning Bureau. According to the staff, from the perspective of urban greening, although poplar catkins and willow catkins have an impact on citizens' daily life, they should not cut poplar and willow in a large area, but should optimize and adjust the existing forest structure, and gradually reduce the proportion of poplar, willow and other tree species prone to flying catkins during afforestation At the same time, Weifang will select optimized poplar and willow to reduce or even eliminate the production of flying catkins from the source.
The work of drug floc cleaning has entered the experimental stage
As the maintenance unit of urban landscape tree, Weifang garden is in the "clearing work" According to the staff of the garden department, according to the current statistical data, the poplar or willow that produces flying catkins in Weifang is basically planted on both sides of the highway, the forest protective belt and the junction of urban and rural areas. The planting proportion of poplar and willow in the urban street trees is low, and at present, the street trees are mainly Fatong and other tree species. From the perspective of urban management, this year's Weifang urban Starting from Beihai Road, some poplar trees are selected for drug floc removal experiment. The production of flying catkins is reduced from the source by spraying inhibitors. With the increase of temperature, in the flourishing period of flying catkins, the garden department will send large spraying vehicles to wet the poplar catkins and catkins hanging on the branches by spraying water mist at high altitude, and speed up the cleaning of flying catkins by accelerating the landing of flying catkins to avoid them Drift with the wind. In addition, for the roadside trees that die naturally on both sides of the road, in terms of tree species replacement, priority will be given to the tree species that will not produce flying catkins, so as to reduce the proportion of poplar and willow from the source and achieve both symptoms and treatment. If the experimental work of drug catkin removal is progressing smoothly, this treatment measure will be popularized in time to reduce the occurrence of flying catkins disturbing residents, so as to further improve The urban environment of Weifang in spring.

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• Time of issue:2020-03-05 10:37
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