Recently, under the steel structure hub overpass in Licheng District, Jinan City, Shandong Province, ragweed , known as the plant killer , appeared for the first time, which attracted the attention of the agricultural department.
ragweed has appeared in Jinan for the first time and has not spread. Combined with the growth characteristics of ragweed, the expert team removed and plowed nearly 10 ragweeds on the spot. The fire department will also thoroughly remove the scattered seeds through fire drills later.
raggrass is native to North American . It has been introduced to my country from abroad in the 1930s. It has now spread in 19 provinces and cities across the country, posing a major threat to agricultural production and human health. Studies have shown that if ragweed enters farmland, 3-4 ragweeds will be reduced by 30% in each square meter of corn field. If there are more ragweeds, it may even be eliminated.
In addition to affecting food security, pollen from ragweed will not only cause skin allergies during the transmission process, but also induce respiratory diseases. In severe cases, it will cause emphysema of , and the infection will recur year after year and worsen year by year. According to statistics, there are 14.6 million patients with ragweed disease in the United States every year, and nearly 800,000 in Canada. Especially during the flowering period every year, about one in seven patients cannot work due to ragweed disease.
In the national list of key foreign invasions first announced in 2012, ragweed ranks sixth and belongs to malignant weed . Its stems, branches, leaves and roots have strong regeneration capabilities. In addition, a single plant can spread 70,000 seeds, with a 100 kilometers spreading distance. It has an inhibitory and repulsive effect on plants such as the Hemaceae family, Asteraceae family , and is a veritable plant killer.
At present, there are more than 660 invasive alien species nationwide, and more than 180 in Shandong Province. Invasion of alien species has become a major problem facing global ecological security and biosecurity . In order to ensure the smooth progress of the census of invasive alien species, Shandong Province has also issued a detailed census implementation plan, established an expert group, and carried out a three-year census work across the province to ensure that the spread trend and invasion risks of major hazards invasive species are effectively curbed.
Source: Learn to strengthen agriculture - Rural monsoon
