The latest planting time of Artemisia annua L.

Artemisia annua, also known as Artemisia annua, Artemisia annua. It originated in our country. The edible part is tender stem, rich in nutrition, less fiber, excellent quality and unique flavor. It is not only a variety of vegetables, but also an indispensable refreshing dish in fast food industry, hot pot city, buffet and so on. Artemisia annua is not only pleasant in flavor, but also easy to cultivate, fast growth and short cycle, so it can be used to protect landlord crops before and after crop cultivation, interplanting and interplanting cultivation.

Planting time of Artemisia annua L.

The whole plant of Artemisia annua has a special fragrance and a unique repellent effect on diseases and insect pests, so it is an ideal pollution-free vegetable with little pesticide spraying. It is a semi-cold-tolerant vegetable, which is beneficial to its growth when the soil is cool and mild, and the soil relative humidity is maintained at 70% Murray and 80%. Under the condition of suitable temperature, it can be sown every year. In recent years, planting in protected areas in winter, spring and autumn has become more and more common. After sowing, it was generally harvested for 50 days, and when the temperature was low, the growing period was extended to 60 rain for 70 days.

The main results are as follows: 1. the planting time is generally better in spring and autumn. In the south, land rent can be cultivated in spring, autumn and winter.

2. The way of sowing can be direct seeding or seedling transplanting, mainly direct seeding. Sow the seeds evenly on the culture soil, after sowing, it is appropriate to cover the soil with about 1 cm, pour through water, keep warm and moisturizing. The seedlings can emerge in 4-5 days, and intermediate seedlings are needed when the seedlings grow to 2-3 true leaves.

3, sowing utensils in balcony, rooftop, or courtyard planting chrysanthemum, the choice of cultivation containers are flowerpots, wooden pots, professional cultivation boxes, styrofoam boxes, etc., ploughing depth of 20 cm is appropriate.

Planting methods of Artemisia annua L.

1. Temperature: the suitable temperature for the growth of Artemisia annua 17 Mel 20 ℃, the weather of sowing in early spring is still relatively cold, and the phenomenon of late spring cold is accompanied, so it is necessary to cover the border with plastic film or old greenhouse film after sowing, compacted with soil around, prevent cold and heat preservation, wait for the weather to turn warm, and uncover the film before the seedlings unearthed the top film. When planting in protected areas for more than 25 ℃, the vents should be opened for ventilation.

2. Seedling weeding: when the seedlings grow to about 10 cm, the leaflet species are pulled out by 5 cm between the plants and rows, and the big leaf species are pulled out by 20 cm or so, and weeds are eradicated at the same time.

3. Watering and fertilization: the seedlings should be watered after they are unearthed, and the watering time and times should be controlled flexibly to keep the soil moist as the standard. Quick-acting nitrogen fertilizer was applied 15 days before each harvest, 15 kg of potassium nitrate and 8 kg of urea per mu.

Pest control of Artemisia annua L.

Artemisia annua diseases and insect pests mainly start with agricultural control, reasonable fertilization and watering to avoid sudden changes in temperature management, create a good ecological environment, promote the healthy growth of plants, reduce the harm of diseases and pests and the application of pesticides, and maintain ecological balance.

Harvest method of Artemisia annua L.

When the seedlings grow to 18 Mel 20 cm high, the leaflet seeds are harvested once on the ground, wash the soil from the roots, and tie them into small handfuls on the market. The harvest of Artemisia annua L. is relatively flexible, it can be harvested at one time, or it can be harvested many times with one sowing, leaving 5 leaves or 2 side branches at the base of the main stem, cutting the upper young main branches or side branches with a hand or knife, bundling them into a handful and pinching them every 20 days or so. Watering and topdressing in time after each harvest to promote the germination of lateral branches.