1, wormwood, May-September is the new season every year. At present, domestic circulation specifications are divided into three types: mugwort, mugwort and mugwort. Artemisia argyi has strong adaptability to climate and soil, cold tolerance and drought tolerance, and can be planted in fields, fields, hillsides and wasteland. The sowing time is as follows:

2. It is best to choose 2-3-year-old plants to preserve the seeds of wormwood. Select robust, high-yield and pest-free plants, cut off fruit branches when the fruit is ripe, spread and dry, thresh, sieve and winnow impurities. Put the seeds in a cloth bag and store them in a cool and dry place.

3. Planting wormwood should be carried out in early spring, February-March in the south and March-April in the north. Direct seeding or transplanting can be carried out, and the direct seeding row spacing is 40-50 cm. After sowing, the soil should not be too thick. Pay attention to management after emergence. When the height of seedlings is10 ~15cm, the seedlings should be fixed according to the plant spacing of 20 ~ 30cm.

4. Folium Artemisiae Argyi is a kind of plant that can be seen almost everywhere in southern China. In Guilin, Guangxi, rice is directly wrapped in mugwort leaves for cooking. Artemisia argyi has been preventing plague for thousands of years.

5. Because Chinese herbal medicines are all made from local materials, wormwood became the hero of preventing plague at that time. According to modern medical pharmacology, wormwood is an antibacterial and antiviral drug, because wormwood has the function of inhibiting and killing germs, and also has the function of preventing and treating respiratory diseases.