What is green grass? What are the effects and functions? How to grow?

There is a strange and beautiful flower growing in the alpine plateau, which attracts botanists and photographers from all over the world to watch it every year. What is the "most desirable wild flower" Artemisia annua? What are the effects and effects? How do you plant it?

What is Artemisia annua L.

Artemisia annua or perennial herbs with yellow sap. One species is native to Western Europe, and the other 48 species are distributed in China-Himalayas, but the most primitive species are in central China. There are 38 species in China, which are concentrated in the southwest, of which Yunnan alone accounts for 17 species, most of which are distributed in snow-capped meadows, alpine shrubs and flowing stone beaches in northwestern Yunnan, and a few species are in the subalpine areas of central and northeastern Yunnan. It is also distributed in the northwest Qilian Mountains. For the famous ornamental plants, some species can be used as medicine to treat diseases.

2. the distribution range of Artemisia annua L.

There are 49 species of Artemisia annua in the world, mainly produced in central and southern Asia, with the most abundant in China. 40 species are distributed in Tibet, Yunnan, Sichuan, Qinghai, Gansu, Shaanxi and other provinces, of which 17 species are distributed in Yunnan. Most of them are distributed in the snow-capped meadows at an altitude of 3000murine 5000 meters in northwestern Yunnan, alpine shrubs, flowing stone shoals and a few species in the subalpine areas of central and northeastern Yunnan.

The Artemisia annua family is prosperous, with a total of 49 species, except one from Western Europe, the rest are distributed in the Himalayas and Hengduan Mountains of China. There are 8 species in Lijiang. It is mainly distributed in snow-capped meadows, alpine thickets and flowing stone beaches in northwestern Yunnan at an altitude of 3000m to 5000m above sea level. a few species are in the subalpine areas of central and northeastern Yunnan, and the Hengduan Mountains are the center of the Artemisia family. There are 39 species of Artemisia annua here, especially the light blue Artemisia annua, bright yellow Gongshan Artemisia annua and so on. It is also distributed in the northwest Qilian Mountains, which is often yellow and stunning in shape and color.

Third, the main value of Artemisia annua L.

1. Ornamental value

The climatic characteristics of high altitude areas: cold frost, strong radiation, strong wind and thin soil, wide temperature difference between day and night, and great climate change. Herbs and shrubs are also often cushioned and prostrate on the ground. However, Artemisia annua can grow tenaciously in such a difficult environment. It opens in the meadow beach, which is barren and 5000 meters above sea level.

two。 Medical value

Artemisia annua L. not only has a high ornamental value, but also can be used as medicine to treat diseases. Such as: whole-edge Artemisia annua (Lijiang also known as "yellow hibiscus"), Nepal Artemisia annua (Luquan also known as "mountain nest bamboo shoots") whole grass into medicine, with the effect of heat-clearing and detoxification, clearing heat and relieving cough; picking leaves before flowering to treat acid reflux in the stomach; antipyretic and anti-inflammatory flowers, but also treat fractures. Artemisia annua racemose, also known as "red hair American ginseng", "snow ginseng", root medicine, treatment of qi deficiency, edema, asthma and other diseases, with the role of tonifying and replenishing qi.

Unfortunately, such as Artemisia annua and spring, gentian, alpine rhododendron and other outstanding flowers, have been buried in the mountains for a long time. Kunming Institute of Botany of the Chinese Academy of Sciences began a systematic investigation of these precious alpine flowers, and introduced and domesticated these famous flowers in the cloud-shrouded and scenic Lushan Botanical Garden.

4. Cultivation techniques of Artemisia annua L.

Artemisia annua L. is cold-resistant, suitable for dry winter, humid and cool summer climate, like soil rich in organic matter and good drainage. It is not resistant to transplantation and can be propagated directly in autumn. The cultivated land should be well ventilated and shaded. It is necessary to prevent strong summer light.