Joke Collection Website - Talk about mood - Tell me why ragweed will seriously reduce the production of many cash crops and food crops, or even no grain harvest.
Tell me why ragweed will seriously reduce the production of many cash crops and food crops, or even no grain harvest.
The pollen of ragweed can induce hay fever and bronchial asthma, which seriously harms human health. According to foreign data, if there are 30~50 ragweed pollen in one cubic meter of air, pollen disease can be induced. Ragweed pollen has infected100000 people in the United States, Russia, Britain and Japan with hay fever and allergic asthma, and the condition is almost life-threatening. According to the domestic investigation report, more than 60% of asthma patients in Nanjing are caused by ragweed pollen.
It is not difficult to identify ragweed. It's millet.
In order to protect the environment, we hope that every teenager will actively participate in the beneficial social practice of eliminating ragweed, and love the country, people, hometown, greening and natural environment. There are three main ways to eliminate ragweed. From the end of May to the middle of June every year, ragweed is uprooted before flowering, and then dried and burned. This method is simple and effective. If a large area of ragweed is found, 10% glyphosate can be sprayed, and the killing rate is over 90%. In addition, Russia can successfully eliminate and suppress ragweed by using a beetle that only eats leaves.
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