Planting techniques and Management methods of Artemisia annua L.

Artemisia annua is a common vegetable, leaves and stems can be eaten together, with the breath of Artemisia, the fragrance of chrysanthemum, fresh, crisp and tender taste. So, what are the planting techniques and management methods of Artemisia annua?

1. Prepare the land to make a bed

It is appropriate to choose neutral or slightly acidic soil with deep soil layer, loose and moist soil, rich organic matter, convenient drainage and irrigation, good water and fertility conservation. Before sowing, apply base fertilizer, 50kg compound fertilizer per mu, or 2000 kg organic fertilizer per mu. You can also apply 15 kg of urea per mu, 25 kg of diammonium phosphate and 5-10 kg of potassium sulfate to mix fertilizer and soil evenly. When making a border, it is generally required that the width of the border is about 1.5 to 1.8 meters, and the length can be flexibly controlled according to the actual situation of the greenhouse. Fine the soil with a rake, rake it flat, and then sow the seeds.

two。 Soaking seeds to accelerate germination

The seeds of Artemisia annua are botanically called achenes with edges and corners. Three to four days before sowing, the seeds were soaked in warm water of 30 ℃ for 24 hours, then washed and dried under the condition of 25 ℃. The seeds should be washed once a day, and the seeds could be sown after 3 or 4 days of germination.

3. Sowing at the right time

Because the plant of chrysanthemum is small and the growth period is short, it can be intercropped with other vegetables. Direct broadcast, broadcast and strip broadcasting can be used in production. The general seed consumption of sowing is 3-4 kg per mu. The seed consumption of strip sowing is 1.52kg per mu, which is more economical. When sowing, the line spacing can be controlled at about 10 cm. If the seedlings are transplanted, the seeds can be scattered more densely, and sparsely sowed if they are not transplanted, so as not to waste time and seeds. After sowing, cover the seeds with a layer of soil 1 cm thick, rake them flat, and then water them thoroughly. It will be watered every 10 days in winter and 7 days in summer.

4. Timely transplanting

Practice has proved that transplanting is a good method to cultivate Artemisia annua. Transplanting seedlings grow faster than direct seeding seedlings, and the plants are larger, and can be harvested in about 20 to 25 days. When transplanting, use a sickle to raise the seedlings and put them in a prepared basin. Then transplant to the whole field, the row spacing is about 4cm, watering once after transplanting, and applying nitrogen fertilizer once 20 days after transplanting.

Finally, when the chrysanthemum plant is about 20 cm high and has 12 or 13 true leaves, it should not be too late to affect the quality. when harvesting, you can use a sharp knife to leave 2 or 3 leaves at the base of the stem.