茼 artemisinin

Chrysanthemumis a one-year or two-year herb. Also known as poncho. Originally from China, is now cultivated in all parts of the North and South. Young stems and leaves are edible. The leaves are long and thick, the whole edge or the feather-shaped deep crack, the cleavage is inverted needle-shaped, the leaf edge is jagged or there is a lack of depth. The leaves are divided into side branches. Spring flowering, head-shaped flower sequence, yellowish-white or dark yellow. Thin fruit, brown, prismatic, crownless hair, a thousand grains weigh 1.8 to 2 grams. Chromosome number 18. According to the size of the leaves and the depth of the lack of carving is divided into large leaf species and small leaf species, the former leaves are large and thick, short of carving and shallow, good food quality, high yield, slightly later maturity;

cold, not resistant to high temperature and drought, the growth temperature is about 20 degrees C, the growth below 12 degrees C is slow, and the growth above 29 degrees C is not good. The soil is good for fertile loam. Planting in spring and autumn in the Yangtze River basin of China. Autumn sowing yield is higher. Spring sowing for the prevention of smoking flowering, should not be premature. North China because of the main food tender stems, more in the early spring sowing, to promote the pumping. South China is mostly cultivated in autumn and winter. Generally to live dew-based, can also be transplanted, per acre with 1.5 to 2 kg. In some areas, autumn drought, with sprouting and seedlings growing faster radish or cabbage seeds mixed withartemisinin, can play a role in masking.the seed, that is, pull out the radish and cabbage. Miao height of about 13 cm between the beginning of the collection of one or two times, can be left two leaves for picking the top of the harvest, to promote its occurrence of new endings. Harvest 40 to 50 days after seeding. Vegetables have a special fragrance when eaten.