1. Planting
1-1 seed propagation in March, the middle of the Artemisia seeds and 3-4 times the dry fine soil mixing direct sowing, using the sowing, strip sowing can be. Strip sowing row spacing of 30 cm or so, after sowing mulch and watering, generally in late March can be seedlings, seedlings in a timely manner after the seedlings, uniform seedlings, the lack of seedlings in the place of transplanting seedlings replanting.
1-2 asexual reproduction
① planting. in May, in the middle, in the field to stay in the seeds will be dug up the roots of Artemisia plants, cut off the top of the shoots, in the construction of good beds, according to the rows of plants spacing 45 × 40 cm per hole planting 1-2 plants, planting step after watering, after 5-7 days to live trees. -The first time I saw this, I was able to see it in the back of my head.
② Stem compression propagation. Every year in July-August will be half-wooden stem Qi ground cut down, cut off the top shoots, in the whole bed, according to the row spacing of 35-40 cm ditch depth of 5-7 cm, will be planted in the ditch across the stalks of Artemisia, the head and tail are connected, and then mulch, watering, and often keep the soil moist, to promote rooting and germination. Artemisia annua (Figure 6)
3 cuttings propagation. In late June - August each year, cut the robust growth of Artemisia stalks, cut off the top shoots, the stalks cut into 20 cm long small sections, in good beds according to rows and plants spacing of 35 × 30 cm, each hole diagonally inserted into the 4-5 small sections, the ground dew 1 / 3, step on the tightly watered, after 10 days or so can be rooted and germinated.
④ Underground stem reproduction. All seasons can be carried out. Underground stems dug out, remove the old stems, old roots, cut into small segments, each segment has 2-3 sections, in a well-built bed every 10 centimeters to open a shallow ditch, each small section of the rhizome is placed flat in the ditch, covered with a thin layer of soil, and watered well.
2. Field management
2-1 Fertilization. Select the previous crop for non-asteroidal crops, good irrigation conditions, fertile sandy loam soil is appropriate. Before planting, the cultivation of sun (frozen) district, combined with the application of adequate fertilizer, per mu of rotting pig, cow, manure 3000-4000 kg or rotting cake fertilizer 150 kg or so, the formation of beds, beds 1.5-2 m wide, deep ditch high beds. During the growth period, a fertilizer in September-October, 10 kg of urea per mu, sprinkled and combined with watering to promote the nutritional growth of Artemisia, to prevent the late early decline.
2-2 Remove weeds. The underground stems of Artemisia reesei are mainly distributed in the 5-10 cm layer of soil, after planting live trees, we should pull out weeds in the field in a timely manner to promote the root system to develop well and accumulate more nutrients.
2-3 Watering. Artemisia reesei is very moisture-tolerant and does not tolerate drought, so it is important to water frequently during the hot and dry season to keep the field moist and promote growth.
2-4 Pest control. Pests and diseases occur during the growth of artemisia, mainly aphids, galls, corn borers, cotton bollworms, bollworms, moths and artemisia potbellied weevils and other pests, can be used to inhibit tabor, cardiac glycosides, chrysanthemum and other high-efficiency low-residue pesticides for prevention and control.
3. trellis cover Artemisia annua (Figure 7)
Artemisia annua on the ground by the frost withered, should be Qi ground to cut off Artemisia annua stalks, clear the field of dead leaves and weeds, shallow loosening of the soil, spreading urea 10 kilograms per acre or 80 kilograms of composite fertilizer, watering the bottom of the full, 5-7 days after the buckling of the trellis cover film. Generally in November under - 12 on, while using the film directly floating surface covered in plants, shed around the pressure tight compaction. If the soil humidity is too large, the film cover can be postponed. Sunny days at noon to be in the leeward ventilation to reduce air humidity in the shed.
4. Harvest
Artemisia annua cultivation with open field or facility cultivation, facility cultivation of artemisia annua can be used in a variety of different ways to cover, phased batch cover, can be listed early, rows of listed, balanced supply. Greenhouse cover cultivation Artemisia annua, general cover after 40-45 days, plant height 20-25 cm can be harvested. Open-ground cultivation Artemisia annua, with the natural temperature changes in their own sprouting, when the average daily temperature of 12-18 ℃, the young stems grow rapidly, in early to mid-April is the peak of open-ground Artemisia annua listing. Harvesting, with a sharp knife flat ground in the base of Artemisia annua cut down, young stems in addition to retaining a very small number of heart leaves, the rest of the leaves are all wiped out, bundled yards in the shade, covered with a wet cloth by 8-10 hours of simple softening, that dining room can be marketed. Trellis cover artemisia, the first crop after harvest, should immediately remove weeds, stubs and leaves, and fertilizer, 5-10 kg of urea per acre, cover the management as above. So after another 45-50 days, that is, the harvest of the 2nd crop. General greenhouse artemisia winter and spring can be harvested 2-3 crops, mu yield of 800-1000 kilograms.
(B) vol, fall artemisia cultivation technology
1. Selection of large-leafed green pole Artemisia reuteri (Figure 8)
2. Fertilization
To rot organic fertilizer-based, 4000-5000 kg per mu, or 25% compound fertilizer + urea 440 kg as fertilizer, deep plowing and solarization of 2-3 times, so that the fertilizer and the soil full of turning, and then make the border width 1 -1.2 meters wide, ditch depth of 20 cm.
3. planting
Volts, autumn artemisia planting the best period in July - early August, will be left to planting plots of plants cut down to the ground, cut off the top and the base of the lignified part, choose the middle part of the section cut into 20 cm long small section, will be placed in the stem of 1% of the insecticidal double liquid soaked for 10-20 minutes, to prevent the drillworms The stem will be soaked in 1% insecticide solution for 10-20 minutes to prevent heartworm infestation. Then fish out, according to the row spacing 35 × 30 cm, 4-5 roots per hole planted in a good bed, the ground dew 1 / 3, step tight watering, covered with shade net, keep the soil moist, after 10 days of rooting and germination.
4. Field management
After the live tree, to pull weeds in the field in a timely manner, combined with fertilizer diluted manure water, 1000 kg per mu. The frame height of 0.8-1 meters, covered with shade net, net around the tie, wind blowing, cover time is mainly sunny days 10 am - 4 pm, morning and evening will be removed from the net, to strengthen the management of the net after the cover.
5. Harvest
Artemisia annua is planted about 30 days after the stem side shoots grow 15-20 cm, you can cut the shoots, cut the shoots need to be covered for 2 days, the shoots on the leaves can be wiped out on the market. When harvesting, cut big and leave small, harvest in batches. Every harvest 1-2 times a fertilizer, watering a thorough water, keep the bed moist, promote growth.